CN105242280B - A kind of relevance imaging apparatus and method based on optical parameter process - Google Patents
A kind of relevance imaging apparatus and method based on optical parameter process Download PDFInfo
- Publication number
- CN105242280B CN105242280B CN201410323509.XA CN201410323509A CN105242280B CN 105242280 B CN105242280 B CN 105242280B CN 201410323509 A CN201410323509 A CN 201410323509A CN 105242280 B CN105242280 B CN 105242280B
- Authority
- CN
- China
- Prior art keywords
- laser
- module
- optical
- target object
- optical parameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a kind of relevance imaging apparatus and method based on optical parameter process, the present invention carries out spatial light intensity modulation to exploring laser light, the laser of spatial-intensity random distribution is irradiated target object；The target reflection being collected into or the signal of transmission are strengthened or frequency conversion by optical parameter modular converter, the signal is detected using bucket detector, increases the detectivity of small-signal；Imaging is associated to the laser signal after optical parameter is changed, target imaging result is obtained.Relevance imaging is combined by the present invention with optical parameter conversion, is had the advantages that high sensitivity, high-resolution, can be carried out frequency conversion, the landscape images information and fore-and-aft distance information of target object can be provided simultaneously.
Description
Technical field
The present invention relates to optical image technology field, a kind of relevance imaging dress based on optical parameter process is more particularly to
Put and method.
Background technology
Relevance imaging, also known as ghost imaging, is a kind of brand-new image-forming mechanism.Traditional optical imaging is the single order using light field
Associate (intensity, phase) and obtain information, and relevance imaging is the second order or High order correletion using light field.Relevance imaging is profit first
With two-photon is tangled to realization, theory and experimental study in recent years show that thermal light source or counterfeit thermal light source can equally realize pass
It is unified into picture.Because counterfeit hot light is readily available, therefore compared with entangled light source, counterfeit thermal light source relevance imaging have it is more wide should
Use prospect.
Relevance imaging carries out spatial light intensity modulation firstly the need of to laser, and the laser of intensity random distribution is then divided into two
Beam, wherein a branch of is reference light, direct irradiation reference detector, not comprising target information.Reference detector is usually that array is visited
Survey the intensity distribution of device, detection and record reference light.A branch of in addition is flashlight, irradiates target object, comprising target information, by
Point probe detects overall strength.Finally, reference light intensity distribution is associated processing with flashlight overall strength, obtains imaging knot
Really.In addition, the intensity distribution of reference light when can be modulated by spatial light intensity default modulation intelligence calculate and obtain, calculating is obtained
Distribution of laser intensity and flashlight overall strength be associated calculatings, can also obtain imaging results, this method is referred to as calculating
Relevance imaging.Using relevance imaging method is calculated, reference detector can be removed, and laser need not be split.
At present, relevance imaging receiving terminal mainly carries out signal enhancing using avalanche photodide (APD) point probe, to the greatest extent
Pipe APD gain is larger, but based on electricity gain, its amplification process is influenceed by factors such as bias light, dark current, detector bandwidths
Significantly, it have impact on overall performance.
Optical parameter amplifies (OPA), and as typical second nonlinear optic phenomenon, directly faint optical signalling can be entered
Row enhancing.Optical parameter amplification operation principle be by frequency be ωpStronger high frequency light (pump light) and frequency be ωsCompared with
Weak low frequency light (flashlight) is while inject nonlinear crystal, due to the coupling of nonlinear dielectric, the energy meeting of pump light
Part is shifted, so as to strengthen signal light intensity, and produces frequency for ωiIdeler frequency light.Pump light, flashlight, ideler frequency light three
Frequency meet ωp=ωs+ωiIf, ωs<ωi, that is, frequency upooaversion is realized, for example, can be by the signal optical frequency of infrared band
Changed in rate to visible light wave range, so that by echo from the relatively low spectrum conversion of detective quantum efficiency to the high ripple of quantum efficiency
Section.In technology of the existing optical parameter amplification at present as image enhaucament, a kind of scheme be using a point detection mode, but must be by
Spot scan, image taking speed is slow；Another scheme is to use face detection mode, but because nonlinear optical crystal cross section is small, and
Limited by reception bandwidth, the imaging of small field of view scope can only be realized.So, it is existing at present direct based on optical parameter amplification
The technology and method for carrying out image enhaucament are only applicable to laboratory environment.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is the detectivity for how improving relevance imaging to small-signal, and is obtained
The information on target object of different depth positions is obtained, relevance imaging effect good under weak reflection light or transmitted light is realized.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of relevance imaging device based on optical parameter process,
Described device includes exploring laser light module, spatial light intensity modulation module, optical parameter modular converter, pumping laser module, beche-de-mer without spike
Measure synchronization control module, bucket detector, association process module；The exploring laser light module includes emitting laser, shaping optics
Element；The pumping laser module includes pump laser and pumping laser shaping element；The optical parameter modulus of conversion
Block includes nonlinear optical element, Input coupling mirror, output coupling mirror, optical beam dump；
The laser of the emitting laser transmitting of the exploring laser light module enters after the shaping element shaping
The spatial light intensity modulation module carries out spatial light intensity modulation, makes laser intensity random distribution, and by spatial light intensity modulation module
Upper default modulation intelligence calculates the Distribution of laser intensity obtained at target object, the laser irradiation of the intensity random distribution
Target object it is reflected or transmission after, into the optical parameter modular converter；The pump laser of the pumping laser module
The laser that the pumping laser sent reflects or transmitted after pumping laser shaping element shaping, with the target object is simultaneously
The Input coupling mirror of the optical parameter modular converter is reached, then carrying out optical parameter by the nonlinear optical element puts
The bucket detector is output to by the output coupling mirror after the conversion of big or optical frequency, the measurement of laser intensity is carried out, and will
Result of detection sends the association process module to；Remaining pump light and remnants target object reflection or swashing for transmission
Light is collected by the optical beam dump；
The optical parameter synchronization control module is connected with the emitting laser and the pump laser respectively, described to close
Connection processing module is connected with the spatial light intensity modulation module and the bucket detector respectively, and the association process module is to calculating
The laser overall strength that obtained Distribution of laser intensity at target object and the bucket detector is detected is associated processing,
Obtain imaging results.
The method that correspondence said apparatus is associated imaging, comprises the following steps：
S1, the laser progress spatial light intensity modulation launched the exploring laser light module, make laser intensity random distribution, obtain
To exploring laser light；
S2, the laser that default modulation intelligence calculating obtains target object on the spatial light intensity modulation module are strong
Degree distribution；
S3, exploring laser light irradiation target object；
S4, the pumping laser progress accurate delay control launched the exploring laser light and the pumping laser module；
S5, by the optical parameter modular converter Optical Parametric is carried out to the reflected light signal or optical signal transmissive of target object
Amount amplification or optical frequency conversion；
S6, by the bucket detector detect optical parameter conversion after laser overall strength；
Distribution of laser intensity at S7, the target object for obtaining step S2 and the laser that the step S6 is obtained are total
Intensity is associated calculating, obtains imaging results.
Preferably, described device also includes beam splitter and reference detector；
The beam splitter is located at the rear of the spatial light intensity modulation module, is carried out by the spatial light intensity modulation module
The laser intensity random distribution of spatial light intensity modulation, is divided into two beams, wherein beam of laser irradiation mesh subsequently into the beam splitter
Object is marked, after reflected or transmission, into the optical parameter modular converter；Another beam of laser enters the reference detector,
By reference detector detection and recording laser intensity distribution, and it is sent to the association process module；
The association process module is connected with reference detector and the bucket detector respectively, and the reference detector is visited
The laser overall strength that the Distribution of laser intensity of survey and the bucket detector are detected is associated processing, obtains imaging results.
The method that correspondence said apparatus is associated imaging, comprises the following steps：
S1, the laser progress spatial light intensity modulation launched the exploring laser light module, make laser intensity random distribution, obtain
To exploring laser light；
S2, by the beam splitter exploring laser light is divided into two beams, it is a branch of as target object described in signal light irradiation,
It is a branch of to be used as the reference detector with reference to described in light irradiation；
S3, the intensity distribution for detecting and recording the reference light；
S4, the pumping laser progress accurate delay control launched the exploring laser light and the pumping laser module；
S5, by the optical parameter modular converter Optical Parametric is carried out to the reflected light signal or optical signal transmissive of target object
Amount amplification or optical frequency conversion；
S6, by the bucket detector detect optical parameter conversion after laser overall strength；
S7, the Distribution of laser intensity for obtaining step S3 are associated meter with the obtained laser overall strengths of the step S6
Calculate, obtain imaging results.
Preferably, described optical parameter modular converter realizes the optics of target object reflected light signal or optical signal transmissive
Parameter amplifies, while realizing frequency upooaversion；
Or realize the same frequency optical parameter amplification of target object reflected light signal or optical signal transmissive；
Or by imitating target object reflected light signal or optical signal transmissive frequency conversion to detector quantum with frequency process
The higher wave band of rate；
Or imitated target object reflected light signal or optical signal transmissive frequency conversion to detector quantum by difference frequency process
The higher wave band of rate.
Preferably, described spatial light intensity modulation module is the frosted glass, digital micromirror array, space light modulation of rotation
One kind in device, laser fiber beam combination or laser-projector.
Preferably, the operation mode of described emitting laser is to continuously run or pulse operating, is transported for the pulse
Turn, pulsewidth can be one kind in millisecond, microsecond, nanosecond, psec or femtosecond；
The operation mode of the pump laser is to continuously run or pulse operating, is operated for the pulse, pulsewidth can
To be one kind in millisecond, microsecond, nanosecond, psec or femtosecond.
Preferably, the nonlinear optical material is bulk crystal structure, waveguiding structure or optical fiber structure.
Preferably, the optical parameter synchronization control module passes through to described emitting laser and described pump laser
Delays time to control is carried out, range gating is realized, i.e., the target image of different depth positions is obtained by changing time delay.
(3) beneficial effect
The invention provides a kind of relevance imaging apparatus and method based on optical parameter process, pass through Application Optics parameter
It is amplified in traditional relevance imaging device, detectivity is up to single photon level, so as to be greatly reduced to photodetector
Gain requirement, coordinate point probe receive target object reflection or transmission return echo-signal, its response speed be higher than face
Detection method, realizes higher sample frequency；Other optical parameter modular converter can realize frequency upooaversion, may be selected infrared
The laser irradiation target object of the atmospheric window wavelength of wave band, realizes that efficiency of transmission is maximized, echo is imitated from detector quantum
The relatively low spectrum conversion of rate is to the high wave band of quantum efficiency, to realize more efficient echo signal reception；Pass through Synchronization Control mould
Block carries out accurate delay control to exploring laser light and pumping laser, can be achieved optical range gating, gating precision up to centimetre-
Grade, on the one hand can reduce environmental background shadow sound, on the other hand can also obtain the target object letter of different depth positions
Breath；Relevance imaging is combined by the present invention with optical parameter process in a word, is turned with optical signalling enhancing, high sensitivity, frequency
The advantage with range gating is changed, the landscape images and fore-and-aft distance information of target object can be provided simultaneously.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of knot of relevance imaging device based on optical parameter process of the preferred embodiment one of the present invention
Structure schematic diagram；
Fig. 2 is a kind of knot of relevance imaging device based on optical parameter process of the preferred embodiment two of the present invention
Structure schematic diagram；
Fig. 3 is a kind of three relevance imaging device based on optical parameter process of the preferred embodiment of the present invention
Structural representation；
Fig. 4 is corresponding for a kind of relevance imaging device based on optical parameter process of the preferred embodiment one of the present invention
Method flow chart；
Fig. 5 is corresponding for a kind of relevance imaging device based on optical parameter process of the preferred embodiment two of the present invention
Method flow chart.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.Following examples are used to illustrate this hair
It is bright, but can not be used for limiting the scope of the present invention.
Fig. 1 is a kind of knot of relevance imaging device based on optical parameter process of the preferred embodiment one of the present invention
Structure schematic diagram；Described device swashs including exploring laser light module 1, spatial light intensity modulation module 2, optical parameter modular converter 6, pumping
Optical module 7, optical parameter synchronization control module 8, bucket detector 9, association process module 10；The exploring laser light module 1 includes hair
Penetrate laser 100, shaping element 101；The pumping laser module 7 includes pump laser 700 and pumping laser shaping
Optical element 701；The optical parameter modular converter 6 includes nonlinear optical element 600, Input coupling mirror 601, output coupling
Mirror 602, optical beam dump 603.
The laser that the emitting laser 100 of the exploring laser light module 1 is launched passes through the shaping of shaping element 101
Enter the spatial light intensity modulation module 2 afterwards and carry out spatial light intensity modulation, make laser intensity random distribution, and emphasized by spatial light
Default modulation intelligence calculates the Distribution of laser intensity obtained at target object on molding block 2, the intensity random distribution
Laser irradiates target object 5 after reflection, into the optical parameter modular converter 6；The pumping of the pumping laser module 7 swashs
The pumping laser that light device 700 is sent is after the shaping of pumping laser shaping element 701, with swashing that the target object 5 reflects
Light reaches the Input coupling mirror 601 of the optical parameter modular converter 6 simultaneously, then by the nonlinear optical element 600
The bucket detector 9 is output to by the output coupling mirror 602 afterwards, the measurement of laser intensity is carried out, and result of detection is transmitted
To the association process module 10；Flashlight and remaining pump light after parameter amplification are collected by the optical beam dump 603；
The optical parameter synchronization control module 8 is connected with the emitting laser 100 and the pump laser 700 respectively, to transmitting
Laser 100 and pump laser 700 carry out accurate delay control, it is possible to achieve range gating, obtain different depth positions
Information on target object；The association process module 10 connects with the spatial light intensity modulation module 2 and the bucket detector 9 respectively
Connect, the laser overall strength that the Distribution of laser intensity and the bucket detector 9 obtained to calculating is detected is associated processing, obtains
To imaging results.
The Input coupling mirror 601 is to pump light high reflectance, to flashlight high transmittance, the output coupling mirror 602
To pump light, flashlight high reflectance, to ideler frequency light high transmittance.Described spatial light intensity modulation module 2 is digital micro-mirror battle array
Arrange (DMD).The pumping laser module 7 is that optically erasing device 6 provides pumping laser.The nonlinear optical material 600
For block bbo crystal.
A length of 1.5 μm of the laser signal light wave that the exploring laser light module 1 of the present embodiment is launched, belongs to atmospheric window, air
Loss is relatively low.The output wavelength of pump laser 700 is 532nm laser, and optical parameter modular converter 6 can be by target object 5
Weak reflection light carries out optically erasing, increases light energy；Meanwhile, the frequency upooaversion of flashlight is realized, is produced according to conjugation
Characteristic, output ideler frequency optical wavelength is 824nm, and its mid-infrared laser is changed to visible light wave range, so that by echo from detection tolerance
The less efficient spectrum conversion of son is to the high wave band of quantum efficiency.
The method of imaging is associated using said apparatus, is comprised the following steps, as shown in Figure 4：
S1, the laser progress spatial light intensity modulation launched the exploring laser light module 1, make laser intensity random distribution,
Obtain exploring laser light；
S2, default modulation intelligence calculates the laser for obtaining target object on the spatial light intensity modulation module 2
Intensity distribution；
S3, exploring laser light irradiation target object；
S4, the pumping laser progress accurate delay control launched the exploring laser light and the pumping laser module 7；
S5, by the optical parameter modular converter 6 optics is carried out to the reflected light signal or optical signal transmissive of target object
Parameter amplifies or optical frequency conversion；
S6, by the bucket detector detect optical parameter conversion after laser overall strength；
Distribution of laser intensity at S7, the target object for obtaining step S2 and the laser that the step S6 is obtained are total
Intensity is associated calculating, obtains imaging results.
Fig. 2 is a kind of relevance imaging device based on optical parameter process of the preferred embodiment two of the present invention；With
Unlike embodiment one, the device of the present embodiment also includes beam device 3 and reference detector 4.The beam splitter 3 is located at the sky
Between intensity modulation module 2 rear, by the spatial light intensity modulation module 2 carry out space light modulation laser intensity it is random
Distribution, is divided into two beams, wherein beam of laser irradiates target object 5 after reflection, into the light subsequently into the beam splitter 3
Learn parameter transform module 6；Another beam of laser enters the reference detector 4, is detected and recording laser by the reference detector 4
Intensity, and it is sent to the association process module 10.The association process module 10 is visited with reference detector 4 and the bucket respectively
Survey device 9 to connect, the laser that the Distribution of laser intensity and the bucket detector 9 for detecting the reference detector 4 are detected is total
Intensity is associated processing, obtains imaging results.
The transmitting 532nm visible waveband laser of emitting laser 100 of exploring laser light module described in the present embodiment 1；Space
Intensity modulation module 2 is mainly made up of the frosted glass rotated.The nonlinear optical crystal 600 of optical parameter modular converter 6 is block
Shape lbo crystal.The 355nm laser that the pump laser 700 of pumping laser module 7 is sent, is that optical parameter conversion equipment 6 is provided
Pumping laser.
The method of imaging is associated using said apparatus, is comprised the following steps, as shown in Figure 5：
S1, the laser progress spatial light intensity modulation launched the exploring laser light module 1, make laser intensity random distribution,
Obtain exploring laser light；
S2, by the beam splitter 3 exploring laser light is divided into two beams, it is a branch of to be used as target object described in signal light irradiation
5, it is a branch of to be used as the reference detector 4 with reference to described in light irradiation；
S3, the intensity distribution for detecting and recording the reference light；
S4, the pumping laser progress accurate delay control launched the exploring laser light and the pumping laser module 7；
S5, by the optical parameter modular converter 6 optics is carried out to the reflected light signal or optical signal transmissive of target object
Parameter amplifies or optical frequency conversion；
S6, by the bucket detector detect optical parameter conversion after laser overall strength；
S7, the Distribution of laser intensity for obtaining step S3 are associated meter with the obtained laser overall strengths of the step S6
Calculate, obtain imaging results.
Fig. 3 is a kind of three relevance imaging device based on optical parameter process of the preferred embodiment of the present invention
Structural representation；The device of the present embodiment is identical with embodiment two, and difference is, the optical parameter modular converter 6 is received
What is collected is the laser signal of target object transmission, and non-reflective laser signal.The nonlinear optical of optical parameter modular converter 6
Crystal 600 is waveguiding structure PPLN crystal.A length of 1.5 μ of laser signal light wave that the exploring laser light module 1 of the present embodiment is launched
M, belongs to atmospheric window, and atmospheric loss is relatively low.The output wavelength of pump laser 700 is 824nm laser.The two is in nonlinear optics
Carry out in crystal 600 and frequency, produce 532nm laser, infrared laser is changed to visible light wave range, so that by exploring laser light signal
From the relatively low spectrum conversion of detective quantum efficiency to the high wave band of quantum efficiency.Used for the transmission imaging of the present embodiment
The computational methods of relevance imaging are identical with the computational methods of the relevance imaging of embodiment two, repeat no more here.
For transmission imaging, the device of embodiment one can be equally used, beam splitter 3 and reference detector 4 are not used.Mesh
Distribution of laser intensity at mark object is calculated by the default modulation intelligence of spatial light intensity modulation module 2 to be obtained.Association process mould
10 pairs of block calculates obtained Distribution of laser intensity and bucket detector 9 detects obtained laser overall strength and is associated processing, obtains
Imaging results.The method of relevance imaging is identical with the method for the relevance imaging of embodiment one, repeats no more here.
Relevance imaging is combined by the present invention with optical parameter conversion, is turned with optical signalling enhancing, high sensitivity, frequency
The advantage with range gating is changed, the landscape images and fore-and-aft distance information of target object can be provided simultaneously.
Embodiment of above is merely to illustrate the present invention, rather than limitation of the present invention.Although with reference to embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that, to technical scheme carry out it is various combination,
Modification or equivalent substitution, without departure from the spirit and scope of technical solution of the present invention, the right that all should cover in the present invention is wanted
Ask among scope.
Claims (9)
1. a kind of relevance imaging device based on optical parameter process, it is characterised in that described device includes exploring laser light module
(1), spatial light intensity modulation module (2), optical parameter modular converter (6), pumping laser module (7), optical parameter Synchronization Control mould
Block (8), bucket detector (9), association process module (10)；The exploring laser light module (1) includes emitting laser (100), whole
Shape optical element (101)；The pumping laser module (7) includes pump laser (700) and pumping laser shaping element
(701)；The optical parameter modular converter (6) includes nonlinear optical element (600), Input coupling mirror (601), output coupling
Mirror (602), optical beam dump (603)；
The laser of emitting laser (100) transmitting of the exploring laser light module (1) is whole by the shaping element (101)
Enter the spatial light intensity modulation module (2) after shape and carry out spatial light intensity modulation, make laser intensity random distribution, and by spatial light
Default modulation intelligence calculates the Distribution of laser intensity obtained at target object on strong modulation module (2), and the intensity is random
Distribution laser irradiation target object (5) it is reflected or transmission after, into the optical parameter modular converter (6)；The pumping
The pumping laser that the pump laser (700) of laser module (7) is sent after pumping laser shaping element (701) shaping,
Reach the Input coupling mirror of the optical parameter modular converter (6) simultaneously with the target object (5) reflection or the laser transmitted
(601), then after the nonlinear optical element (600) carries out optical parameter amplification or optical frequency conversion by described defeated
Go out coupling mirror (602) and be output to the bucket detector (9), carry out the measurement of laser intensity, and result of detection sent to described
Association process module (10)；Remaining pump light and the remaining target object (5) reflection or the laser of transmission are by the light
Beam collector (603) is collected；
The optical parameter synchronization control module (8) connects with the emitting laser (100) and the pump laser (700) respectively
Connect, the association process module (10) is connected with the spatial light intensity modulation module (2) and the bucket detector (9) respectively, institute
Distribution of laser intensity and the bucket detector (9) at the target object that association process module (10) obtains calculating is stated to detect
To laser overall strength be associated processing, obtain imaging results.
2. device according to claim 1, it is characterised in that described device also includes beam splitter (3) and reference detector
(4)；
The beam splitter (3) is located at the rear of the spatial light intensity modulation module (2), by the spatial light intensity modulation module
(2) the laser intensity random distribution of spatial light intensity modulation is carried out, is divided into two beams subsequently into the beam splitter (3), wherein a branch of
Laser irradiation target object (5), after reflected or transmission, into the optical parameter modular converter (6)；Another beam of laser enters
The reference detector (4), by the reference detector (4) detection and recording laser intensity distribution, and is sent to the association
Processing module (10)；
The association process module (10) is connected with reference detector (4) and the bucket detector (9) respectively, to described with reference to spy
The laser overall strength that the Distribution of laser intensity and the bucket detector (9) of survey device (4) detection are detected is associated processing, obtains
To imaging results.
3. the device according to claim 1 or claim 2, it is characterised in that described optical parameter modular converter (6)
The optical parameter amplification of target object reflected light signal or optical signal transmissive is realized, while realizing frequency upooaversion；
Or realize the same frequency optical parameter amplification of target object reflected light signal or optical signal transmissive；
Or by with frequency process by target object reflected light signal or optical signal transmissive frequency conversion to detective quantum efficiency compared with
High wave band；
Or by difference frequency process by target object reflected light signal or optical signal transmissive frequency conversion to detective quantum efficiency compared with
High wave band.
4. the device according to claim 1 or claim 2, it is characterised in that described spatial light intensity modulation module (2)
For one kind in the frosted glass of rotation, digital micromirror array, spatial light modulator, laser fiber beam combination or laser-projector.
5. the device according to claim 1 or claim 2, it is characterised in that the fortune of described emitting laser (100)
Rotary-die type is to continuously run or pulse operating, is operated for the pulse, the unit of pulsewidth can be millisecond, microsecond, nanosecond, skin
One kind in second or femtosecond；
The operation mode of the pump laser (700) is to continuously run or pulse operating, is operated for the pulse, pulsewidth
Unit can be one kind in millisecond, microsecond, nanosecond, psec or femtosecond.
6. the device according to claim 1 or claim 2, it is characterised in that the nonlinear optical element (600) is
Bulk crystal structure, waveguiding structure or optical fiber structure.
7. the device according to claim 1 or claim 2, it is characterised in that the optical parameter synchronization control module (8)
By carrying out delays time to control to described emitting laser (100) and described pump laser (700), range gating is realized,
The target image of different depth positions is obtained by changing time delay.
8. the method that device according to claim 1 is associated imaging, it is characterised in that comprise the following steps：
S1, the laser progress spatial light intensity modulation launched the exploring laser light module (1), make laser intensity random distribution, obtain
To exploring laser light；
S2, the laser that default modulation intelligence calculating obtains target object on the spatial light intensity modulation module (2) are strong
Degree distribution；
S3, exploring laser light irradiation target object；
S4, the pumping laser progress accurate delay control launched the exploring laser light and the pumping laser module (7)；
S5, by the optical parameter modular converter (6) Optical Parametric is carried out to the reflected light signal or optical signal transmissive of target object
Amount amplification or optical frequency conversion；
S6, by the bucket detector detect optical parameter conversion after laser overall strength；
The laser overall strength that Distribution of laser intensity at S7, the target object for obtaining step S2 is obtained with the step S6
Calculating is associated, imaging results are obtained.
9. the method that device according to claim 2 is associated imaging, it is characterised in that comprise the following steps：
S1, the laser progress spatial light intensity modulation launched the exploring laser light module (1), make laser intensity random distribution, obtain
To exploring laser light；
S2, by the beam splitter (3) exploring laser light is divided into two beams, it is a branch of to be used as target object described in signal light irradiation
(5) it is, a branch of to be used as the reference detector (4) with reference to described in light irradiation；
S3, the intensity distribution for detecting and recording the reference light；
S4, the pumping laser progress accurate delay control launched the exploring laser light and the pumping laser module (7)；
S5, by the optical parameter modular converter (6) Optical Parametric is carried out to the reflected light signal or optical signal transmissive of target object
Amount amplification or optical frequency conversion；
S6, by the bucket detector detect optical parameter conversion after laser overall strength；
S7, the Distribution of laser intensity for obtaining step S3 are associated calculating with the obtained laser overall strengths of the step S6, obtain
To imaging results.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410323509.XA CN105242280B (en) | 2014-07-08 | 2014-07-08 | A kind of relevance imaging apparatus and method based on optical parameter process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410323509.XA CN105242280B (en) | 2014-07-08 | 2014-07-08 | A kind of relevance imaging apparatus and method based on optical parameter process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105242280A CN105242280A (en) | 2016-01-13 |
| CN105242280B true CN105242280B (en) | 2017-07-28 |
Family
ID=55039983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410323509.XA Active CN105242280B (en) | 2014-07-08 | 2014-07-08 | A kind of relevance imaging apparatus and method based on optical parameter process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105242280B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676613B (en) * | 2016-03-29 | 2018-08-14 | 山东大学 | A kind of digital hologram phantom imaging system and its working method using single pixel bucket detector |
| CN106198491B (en) * | 2016-07-06 | 2019-02-26 | 中国科学院上海光学精密机械研究所 | The device and method that improving laser induces the breakdown point distance of air breakdown |
| CN106324615A (en) * | 2016-08-21 | 2017-01-11 | 西安交通大学 | Underwater extra-long-distance imaging device and imaging method based on ghost image calculation |
| CN107450179B (en) * | 2017-06-30 | 2019-08-13 | 中国科学院上海光学精密机械研究所 | Active correlation imaging optical system based on multi-channel semiconductor laser |
| CN107942338B (en) * | 2017-09-28 | 2021-04-20 | 北京华航无线电测量研究所 | Multi-wavelength associated imaging system based on digital micromirror device |
| CN108204890B (en) * | 2017-12-27 | 2021-05-11 | 四川大学 | Method for testing light field uniformity of illumination system and detection device thereof |
| CN108363069A (en) * | 2018-01-18 | 2018-08-03 | 中国科学院理化技术研究所 | Relevance imaging device and method based on distributed semiconductor laser array |
| CN108469685B (en) * | 2018-05-17 | 2020-08-25 | 辽宁大学 | Super-resolution associated imaging system and imaging method |
| CN110109140A (en) * | 2019-05-27 | 2019-08-09 | 山东航天电子技术研究所 | A kind of range gating laser radar based on optical frequency conversion |
| CN111736162B (en) * | 2020-08-04 | 2020-11-10 | 中国人民解放军国防科技大学 | Laser illumination echo detection device and method for complex target |
| CN112255857A (en) * | 2020-10-19 | 2021-01-22 | 重庆连芯光电技术研究院有限公司 | Interference enhancement up-conversion imaging device |
| CN112285736B (en) * | 2020-10-22 | 2022-05-03 | 中国空间技术研究院 | All-weather laser radar detection system and method based on photon intensity correlation |
| CN112817009B (en) * | 2020-12-30 | 2022-10-18 | 西安电子科技大学 | Anti-interference detection imaging system and method based on two-dimensional optical phased array |
| CN113093166A (en) * | 2021-04-07 | 2021-07-09 | 毕思文 | Detection imaging optical system based on compressed-state light field |
| CN113310441B (en) * | 2021-06-01 | 2022-06-10 | 湖南大学 | Polarization correlation imaging method for detecting roughness processing of metal surface |
| CN113534099B (en) * | 2021-07-13 | 2024-04-09 | 西安电子科技大学 | OPA scanning dynamic imaging method and imaging system |
| CN114744478B (en) * | 2022-06-14 | 2022-09-30 | 中国科学技术大学 | Laser light source system suitable for helium resonance fluorescence laser radar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002228750A (en) * | 2001-02-05 | 2002-08-14 | Mitsubishi Heavy Ind Ltd | Laser radar device and image pickup method using the same |
| CN102316282A (en) * | 2011-09-20 | 2012-01-11 | 中国科学院理化技术研究所 | Image noise reducing device based on optics dolby |
| CN102323595A (en) * | 2011-08-08 | 2012-01-18 | 中国电子科技集团公司第十一研究所 | Brightness modulation scannerless laser three-dimensional imaging method |
| CN103308189A (en) * | 2013-06-28 | 2013-09-18 | 中国科学院空间科学与应用研究中心 | Entanglement imaging system and method based on dual-compression coincidence measurements |
| CN103323396A (en) * | 2013-06-28 | 2013-09-25 | 中国科学院空间科学与应用研究中心 | Two-dimensional compression ghost imaging system and method based on coincidence measurement |
-
2014
- 2014-07-08 CN CN201410323509.XA patent/CN105242280B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002228750A (en) * | 2001-02-05 | 2002-08-14 | Mitsubishi Heavy Ind Ltd | Laser radar device and image pickup method using the same |
| CN102323595A (en) * | 2011-08-08 | 2012-01-18 | 中国电子科技集团公司第十一研究所 | Brightness modulation scannerless laser three-dimensional imaging method |
| CN102316282A (en) * | 2011-09-20 | 2012-01-11 | 中国科学院理化技术研究所 | Image noise reducing device based on optics dolby |
| CN103308189A (en) * | 2013-06-28 | 2013-09-18 | 中国科学院空间科学与应用研究中心 | Entanglement imaging system and method based on dual-compression coincidence measurements |
| CN103323396A (en) * | 2013-06-28 | 2013-09-25 | 中国科学院空间科学与应用研究中心 | Two-dimensional compression ghost imaging system and method based on coincidence measurement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105242280A (en) | 2016-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105242280B (en) | A kind of relevance imaging apparatus and method based on optical parameter process | |
| CN103901435B (en) | A kind of full optical fiber optical optical road Full wave shape laser radar system | |
| JP2022120032A (en) | Multiwavelength lidar design | |
| US8269978B2 (en) | Imaging with nondegenerate frequency-entangled photons | |
| CN102998260B (en) | Two-photon entanglement-based terahertz wave imaging device | |
| CN102316282B (en) | Image noise reducing device based on optics dolby | |
| CN106597468B (en) | A kind of dual-mode laser imaging system and imaging method | |
| CN105334519B (en) | More atmospheric parameters based on triple channel F-P etalons while detected with high accuracy laser radar system | |
| CN106019313A (en) | Single-pixel detection wind measuring lidar based on polarization double edges | |
| CN104833650A (en) | Pulse terahertz time-domain spectral system with single photoconductive antenna and detection method thereof | |
| EP2414863A1 (en) | Generation and detection of frequency entangled photons | |
| US20210116543A1 (en) | Approaches, apparatuses and methods for lidar applications based on-mode-selective frequency conversion | |
| CN106646510A (en) | Photon marking based first photon laser imaging system | |
| CN111736173A (en) | Depth measuring device and method based on TOF and electronic equipment | |
| Zhu et al. | Single photon imaging and sensing of highly obscured objects around the corner | |
| CN102661795B (en) | Pump-detection spectrum method with synchronous chopping of pump light and signal light and recording of signal light subarea, and realizing device of method | |
| Li et al. | LiDAR integrated IR OWC system with the abilities of user localization and high-speed data transmission | |
| CN206876569U (en) | A kind of terahertz imaging system | |
| CN204086537U (en) | A kind of photoswitch realizes the passive laser ranging system of optical fiber type of inside and outside optical path compensation | |
| CN204903381U (en) | Nonlinearity thin film materials's optical nonlinearity measuring device | |
| CN102841355A (en) | Device and method for measuring data of femtosecond range laser radar based on microwave photonics | |
| CN115079203B (en) | Non-vision imaging system and imaging method | |
| CN113466883B (en) | Device and method for improving detection distance in sea fog environment based on wide-spectrum circular polarization | |
| CN105588826A (en) | Femtosecond time resolution multi-channel lock-phase fluorescence spectrophotometer based on optical parametric amplification | |
| Zhu et al. | Quantum parametric mode sorting: a case study on small angle scattering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |