CN2762180Y - Ultrashort chirp pulse photon crystal optical parameter amplifying device - Google Patents
Ultrashort chirp pulse photon crystal optical parameter amplifying device Download PDFInfo
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- CN2762180Y CN2762180Y CN 200420110958 CN200420110958U CN2762180Y CN 2762180 Y CN2762180 Y CN 2762180Y CN 200420110958 CN200420110958 CN 200420110958 CN 200420110958 U CN200420110958 U CN 200420110958U CN 2762180 Y CN2762180 Y CN 2762180Y
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- photon crystal
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- 230000003287 optical effect Effects 0.000 title claims abstract description 51
- 239000013078 crystal Substances 0.000 title claims description 82
- 238000005086 pumping Methods 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 5
- 229910052691 Erbium Inorganic materials 0.000 claims description 4
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 4
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000002019 doping agent Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 3
- 239000004038 photonic crystal Substances 0.000 abstract description 6
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 230000010287 polarization Effects 0.000 abstract 1
- 238000001069 Raman spectroscopy Methods 0.000 description 2
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Abstract
An ultrashort chirp pulse photonic crystal optical parametric amplification device is characterized in that the most core element of the device is a three-dimensional photonic crystal, and an optical element entering a signal light path of the three-dimensional photonic crystal is sequentially a signal light source, a first pulse generator, a light collimation element, a polarization element, a first stretcher and a coupling element; the isolator and the light splitting element are positioned behind the three-dimensional photonic crystal, and the optical element entering the other pumping light path of the three-dimensional photonic crystal sequentially comprises a pumping light laser, a second pulse generator, a polarizer, a second stretcher and a shaper along the advancing direction of pumping light; the isolator is followed by the optical splitting element and the compressor, which is followed by the signal light receiving device. The utility model has the characteristics of simple structure, easy to operate and pumping are efficient.
Description
Technical field
The utility model is a kind of ultrashort chirp pulse photon crystal optical parameter amplifying device.Mainly amplify ultrashort chirped pulse wavelength signals light according to the optical system of controllable way generation nonlinearities change.
Background technology
U.S. Pu Linze Mace labor in the prior art. that. mark dimension hereby people such as (Przemyslaw.P.Markowicz) at " surging increasing produces triple-frequency harmonics in the three-D photon crystal " (Dramatic Enhancement of Third-harmonic Generation inThree-Dimensional photonic crystals) [Physical Review LettersVol.92; No.8 (2004)] discussed theory and the characteristic research that in three-D photon crystal, produces triple-frequency harmonics about light in the literary composition, for being provided, a kind of amplification ultrashort chirp pulse photon crystal optical parameter amplifying device established theoretical foundation.
Summary of the invention
The purpose of this utility model provides a kind of ultrashort chirp pulse photon crystal optical parameter amplifying device, utilize flashlight to produce pulse and can modulate flashlight through the pulse generator, the nonlinear effect of propagating in three-D photon crystal behind its broadening is gone ripple amplifies, the pulse that broadening is amplified is compressed again, realizes the amplification of ultrashort chirped pulse flashlight.This device should have simple in structure, easily operation and the high characteristics of pumping efficiency.
Technical solution of the present utility model is as follows:
A kind of ultrashort chirp pulse photon crystal optical parameter amplifying device, be characterized in that the most crucial element of this device is a three-D photon crystal, the optical element that enters the signal light path of this three-D photon crystal is signal optical source, first pulse producer, optical alignment element, polarizing component, first stretcher and coupling element successively; Isolator and beam splitter are positioned at after the described three-D photon crystal, and the optical element that enters another pumping light path of described three-D photon crystal is pump light laser instrument, second pulse producer, the polarizer, second stretcher and reshaper along the working direction of pump light successively; After the isolator is beam splitter and compressor reducer, compressor reducer) be the flashlight receiving trap afterwards.
Described signal optical source and pump light source are that laser instrument is the optical fiber solid state laser, or semiconductor laser.
Described said first pulse producer and second pulse producer are the pulse producers of electrooptical modulation.
The described polarizing component and the polarizer are the Ni Keer prism, or polaroid, or wollaston prism.
Described optical alignment element is made of semi-convex spherical lens.
Described first stretcher is identical with the structure of second stretcher, mainly be made of blazed grating, convex reflecting mirror and concave mirror, its light path is that input light reflects, exports through the concave reflection mirror reflection through blazed grating reflection, concave reflection mirror reflection, convex reflecting mirror.
Described coupling element is that micro optical lens constitutes.
Described three-D photon crystal is laid some three-D photon crystal points and is constituted on the three-D photon crystal substrate.
Described three-D photon crystal point is by mixing in the glass, or quartzy dopant material is formed, the refractive index of three-D photon crystal point is greater than the three-D photon crystal substrate, doping elements is ytterbium, erbium rare element, and described three-D photon crystal point is spherical, cube shaped, cuboid, rhombohedreon shape, polyhedron shape or the curve bodily form; Arrangement between the three-D photon crystal point assumes diamond in shape, square, rectangle or polygon.
Above-mentioned isolator is a magneto optic isolator.
Above-mentioned beam splitter is a plane transmission grating, or the transmission blazed grating, or the transmission concave grating.
Above-mentioned reflecting element is a plane mirror, or concave mirror.
Described receiving trap is a CCD diode array detector, or photodiode, or photomultiplier, but the hyperchannel plate, or oscillograph, or computing machine.
Described reshaper is diaphragm or lens.
The advantage of ultrashort chirp pulse photon crystal optical parameter amplifying device of the present utility model:
1, use ultrashort chirp pulse photon crystal optical parameter amplifying device of the present utility model can realize the amplification of ultrashort-pulse chirp wavelength signals light;
2, the efficient height of pumping.
Description of drawings
Fig. 1 is the utility model ultrashort chirp pulse photon crystal optical parameter amplifying device most preferred embodiment structural representation.
Fig. 2 is the structural representation of stretcher 5 among Fig. 1.
Fig. 3 is an A_A cross-sectional view among Fig. 1.
Fig. 4 is a B_B cross-sectional view among Fig. 1.
Fig. 5 is the structural representation of compressor reducer 10 among Fig. 1.
Fig. 6 is the structural representation of second stretcher 13 among Fig. 1.
Among the figure: 1-signal optical source 2-the first impulse generator 3-optical alignment element 4-polarizing component 5-the first stretcher 501-balzed grating, 502-convex reflecting mirror 503-concave mirror 6-coupling element 7-three-D photon crystal 701-three-D photon crystal substrate 702-three-D photon crystal point 8-isolator 9-beam splitter 10-compressor reducer 1001-concave surface balzed grating, 1002-concave mirror 11-receiving system 12-reshaper 13-the second stretcher 1301-balzed grating, 1302-convex reflecting mirror 303, concave mirror 14-polarizer 15-the second impulse generator 16-pump light laser instrument
Embodiment:
See also Fig. 1 earlier, Fig. 1 is the structural representation of the utility model ultrashort chirp pulse photon crystal optical parameter amplifying device most preferred embodiment, as seen from the figure, the utility model ultrashort chirp pulse photon crystal optical parameter amplifying device, comprise, most crucial element is a three-D photon crystal 7, isolator 8 and beam splitter 9 are positioned at after the three-D photon crystal 7, coupling element 6 and stretcher 5 and polarizing component 4 place before the three-dimensional crystal photon 7, collimated light element 3 places before the polarizing component 4, placing the plane of incidence of collimated light element 3 is pulse producer 2 and signal optical source 1 before, placing another road optical element of side of three-D photon crystal 7 is reshaper 12, stretcher 13 is positioned at before the reshaper 12, the polarizer 14 is positioned at before the stretcher 13, before the polarizer 14 is pulse producer 15 and pump light laser instrument 16, is beam splitter 9 and compressor reducer 10 after the isolator 8, is the flashlight receiving trap 11 that is exaggerated after the compressor reducer 10.
Said signal optical source 1 is that laser instrument can be the optical fiber solid state laser, or semiconductor laser, pump light laser instrument 16 is laser diodes, the light of signal optical source 1 emission incides and produces pulse light on the pulse producer 2 and inject collimated light element 3, pulse light through 3 outgoing of collimated light element is become linearly polarized light partially by 4 of polarizing components, this linearly polarized light incides stretcher 5 and is broadened, pulse light behind the broadening incides on the coupling element 6, light after coupling element 6 couplings is injected in the three-D photon crystal 7, pump light is biased into linearly polarized light by laser instrument 16 outgoing passages through which vital energy circulates chong channels towards entering 14 of the polarizers after generator 15 produces the pulse pump light, behind stretcher 13 broadenings, enter again and incide from the side in the three-D photon crystal 7 after reshaper 12 is made into needed light spot shape, pump light and flashlight are injected beam splitter 9 through isolator 8 after being coupled and being exaggerated in three-D photon crystal, beam splitter 9 will leave unused and after light is separated the flashlight that is exaggerated be sent in the compressor reducer 10, and compressor reducer 10 incides on the receiving trap 11 of flashlight after flashlight is compressed into ultrashort pulse light.
Said formation signal optical source 1 and pump light source 16 are optical fiber solid state lasers, or semiconductor laser.
Said first pulse producer 2 and second pulse producer 15 are pulse producers of electrooptical modulation.
The said polarizing component 4 and the polarizer 14 are the Ni Keer prism, or polaroid, or wollaston prism.
Said collimated light element 3 is made of semi-convex spherical lens.
Said coupling element 6 is made of micro optical lens.
Said three-D photon crystal 7 is by glass, or constitute by quartz, the three-D photon crystal xsect is shown in Fig. 3 and 4, it on the three-D photon crystal substrate 701 three-D photon crystal point 702, three-D photon crystal point 702 is spherical, and is cube shaped, cuboid, rhombohedreon shape, the polyhedron shape and the curve bodily form; Arrangement between 702 assumes diamond in shape, and is square, rectangle and polygon.Three-D photon crystal point 702 is by mixing in the glass, or quartzy dopant material forms, and the refractive index of three-D photon crystal point more than 702 is greater than three-D photon crystal substrate 701, and doping elements is rare elements such as ytterbium, erbium.
Said beam splitter 9 is plane transmission grating, or the transmission blazed grating, or transmission concave grating formation.
Said compressor reducer 10 mainly comprises concave surface blazed grating 1001, concave mirror 1002, as shown in Figure 5.
Said receiving trap 11 is CCD diode array detectors, or photodiode, or photomultiplier, or the hyperchannel plate, or oscillograph, or computing machine.
Said reshaper 12 is made of diaphragm, lens.
The ultrashort chirp pulse photon crystal optical parameter amplifying device course of work of the present utility model is: become parallel polarized light when flashlight produces pulse lights through pulse generator 2 after collimated light element 3 enters polarizing component 4 after being adjusted to directional light, this parallel polarized light by first stretcher 5 with pulse strenching, the pulse of broadening exists chromatic dispersion to form chirped pulse, broadening chirped pulse be coupled element 6 and be coupled in the three-D photon crystal 7, the light that another road pump light is sent by the pump light laser instrument produces through second pulse producer 15 and becomes linearly polarized light again through second stretcher, 13 broadenings after pulse pump light is directly gone into the polarizer 14, the pulsewidth of pump light pulse strenching is greater than the pulsewidth of signal pulse light, in three-D photon crystal 7, pump light is made into required light spot shape through reshaper 12, enter in the three-D photon crystal 7 from the side of three-D photon crystal 7, whole envelope signal light pulses are wanted in the pump light pulse, when flashlight Is and pump light Ip meet in three-D photon crystal 7, because nonlinear coupling effects, flashlight Is is exaggerated, amplify two kinds of light of output by three-D photon crystal 7, a kind of is the flashlight Gs that is exaggerated, another kind of light is called idle light Gi, two kinds of light each wavelength after isolator 8 and beam splitter 9 is separated, the light that the light that isolator 8 prevents to advance reflects when running into optical element surface breaks three-D photon crystal 7, compressed device 10 chromatic dispersions of the flashlight that is exaggerated are compensated, pulse light is compressed into ultrashort chirped pulse, amplifies the compressed flashlight in back and be transported on the receiving trap 11.
It is a kind of non-linear phenomena of utilizing in the three-D photon crystal that the coupling of flashlight and pump light is amplified, and it is transferred to the sub-fraction incident optical power on its low stokes wave of frequency ratio; Its principle of work is based on stimulated Raman scattering (SRS) effect of three-D photon crystal.SRS in the three-D photon crystal comes from the third-order non-linear effect of three-D photon crystal, show as the interaction between pump photon, Stokes (Stokes) photon and the optical branch phonon: pump photon is absorbed by medium molecule, electronics is from the ground state transition to the virtual level, the size of virtual level is by the decision of the energy of pump light, the electronics of virtual level is got back to the high level of vibrational state under the induction of flashlight then, produce a photon with flashlight same frequency, same phase, equidirectional, be called the Stokes photon.If flashlight and heavy pumping light wave are simultaneously in three-D photon crystal, and signal light wavelength is positioned within the raman gain spectrum bandwidth of pumping light wave, then this flashlight can be amplified by this three-D photon crystal.
In device shown in Figure 1, signal optical source 1 is to make light source with solid state laser, and output wavelength is 10645nm, output energy 2.7 μ J.Three-D photon crystal point 702 is spherical, and the three-D photon crystal substrate is quartzy, is doped to erbium, and flashlight is its frequency tripling 354nm.Experiment shows that wavelength is that the flashlight of 354nm is exaggerated more than 600 times, and pulsewidth is 2.1 * 10
-15Second.
Our experiments show that the utility model device has simple in structure, easily operation and the high characteristics of pumping efficiency.
Claims (10)
1, a kind of ultrashort chirp pulse photon crystal optical parameter amplifying device, it is characterized in that the most crucial element of this device is three-D photon crystal (7), the optical element that enters the signal light path of this three-D photon crystal (7) is signal optical source (1), first pulse producer (2), optical alignment element (3), polarizing component (4), first stretcher (5) and coupling element (6) successively; Isolator (8) and beam splitter (9) are positioned at described three-D photon crystal (7) afterwards, and the optical element that enters the pumping light path of described three-D photon crystal (7) from the side is pump light laser instrument (16), second pulse producer (15), the polarizer (14), second stretcher (13) and reshaper (12) along the working direction of pump light successively; Isolator (8) is beam splitter (9) and compressor reducer (10) afterwards, and compressor reducer (10) is flashlight receiving trap (11) afterwards.
2, ultrashort chirp pulse photon crystal optical parameter amplifying device according to claim 1 is characterized in that described signal optical source (1) and pump light source (16) are that laser instrument is the optical fiber solid state laser, or semiconductor laser.
3, ultrashort chirp pulse photon crystal optical parameter amplifying device according to claim 1 is characterized in that described said first pulse producer (2) and second pulse producer (15) are the pulse producers of electrooptical modulation.
4, ultrashort chirp pulse photon crystal optical parameter amplifying device according to claim 1 is characterized in that the described polarizing component (4) and the polarizer (14) are the Ni Keer prism, or polaroid, or wollaston prism.
5, ultrashort chirp pulse photon crystal optical parameter amplifying device according to claim 1 is characterized in that described optical alignment element (3) is made of semi-convex spherical lens.
6, ultrashort chirp pulse photon crystal optical parameter amplifying device according to claim 1, it is characterized in that described first stretcher (5) is identical with the structure of second stretcher (13), comprise that mainly blazed grating (501), convex reflecting mirror (502) and concave mirror (503) constitute, its light path is that input light reflects, exports through concave mirror (503) reflection through blazed grating (501) reflection, concave mirror (503) reflection, convex reflecting mirror (502).
7, ultrashort chirp pulse photon crystal optical parameter amplifying device according to claim 1 is characterized in that described three-D photon crystal (7) constitutes at the last some three-D photon crystal points (702) of laying of three-D photon crystal substrate (701).
8, ultrashort chirp pulse photon crystal optical parameter amplifying device according to claim 7, it is characterized in that described three-D photon crystal point (702) is by mixing in the glass, or quartzy dopant material is formed, the refractive index of three-D photon crystal point (702) is greater than three-D photon crystal substrate (701), doping elements is ytterbium, erbium rare element, and described three-D photon crystal point (702) is spherical, cube shaped, cuboid, rhombohedreon shape, polyhedron shape or the curve bodily form; Arrangement between the three-D photon crystal point (702) assumes diamond in shape, square, rectangle or polygon.
9, ultrashort chirp pulse photon crystal optical parameter amplifying device according to claim 1 is characterized in that described beam splitter (9) is a plane transmission grating, or the transmission blazed grating, or the transmission concave grating.
10, ultrashort chirp pulse photon crystal optical parameter amplifying device according to claim 1 is characterized in that described receiving trap (11) is CCD diode array detector, photodiode, photomultiplier, hyperchannel plate, oscillograph or computing machine.
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| CN 200420110958 CN2762180Y (en) | 2004-11-17 | 2004-11-17 | Ultrashort chirp pulse photon crystal optical parameter amplifying device |
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| CN 200420110958 CN2762180Y (en) | 2004-11-17 | 2004-11-17 | Ultrashort chirp pulse photon crystal optical parameter amplifying device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295559C (en) * | 2004-11-17 | 2007-01-17 | 中国科学院上海光学精密机械研究所 | Ultrashort chirp pulse photon crystal optical parameter amplifying device |
| CN108681095A (en) * | 2018-05-21 | 2018-10-19 | 武汉华日精密激光股份有限公司 | Pulse shortener and femtosecond pulse laser |
-
2004
- 2004-11-17 CN CN 200420110958 patent/CN2762180Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295559C (en) * | 2004-11-17 | 2007-01-17 | 中国科学院上海光学精密机械研究所 | Ultrashort chirp pulse photon crystal optical parameter amplifying device |
| CN108681095A (en) * | 2018-05-21 | 2018-10-19 | 武汉华日精密激光股份有限公司 | Pulse shortener and femtosecond pulse laser |
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