CN109256666A - The Fe of non-chain pulsed HF laser pump (ing)2+: ZnSe laser - Google Patents
The Fe of non-chain pulsed HF laser pump (ing)2+: ZnSe laser Download PDFInfo
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- CN109256666A CN109256666A CN201710566385.1A CN201710566385A CN109256666A CN 109256666 A CN109256666 A CN 109256666A CN 201710566385 A CN201710566385 A CN 201710566385A CN 109256666 A CN109256666 A CN 109256666A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094049—Guiding of the pump light
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Abstract
The present invention provides a kind of Fe of non-chain pulsed HF laser pump (ing)2+: ZnSe laser comprising: non-chain Pulsed HF Laser, focusing unit, Fe2+: ZnSe crystal, laser resonator, non-chain Pulsed HF Laser is as pumping source, for emitting pump light；The laser that focusing unit is used to issue non-chain Pulsed HF Laser focuses；Fe2+: ZnSe crystal is used to be used as laser gain medium；Laser resonator realizes amplification, exports laser for vibrating to intracavitary photon；The laser that non-chain Pulsed HF Laser issues focuses on the intracavitary Fe of laser resonance by focusing unit2+: on ZnSe crystal, to Fe2+: ZnSe crystal is pumped, Fe2+: ZnSe crystal generates population inversion, generates laser under the feedback effect for the resonant cavity that cavity mirror and output coupling mirror are constituted, exports through output coupling mirror.
Description
Technical field
The present invention relates to pulsed infrared laser technology in solid, in particular to a kind of room of non-chain pulsed HF laser pump (ing)
Warm high energy Fe2+: ZnSe laser.
Background technique
3-5 mu m waveband intermediate infrared radiation is located at the highest transmission window of atmospheric transmittance, and ideal characteristics of atmospheric transmission makes
The laser for obtaining the wave band has good application prospect in fields such as atmospheric remote sensing, laser radars.Simultaneously because aircraft, guided missile tail
The black body radiation of flame is placed exactly in the wave band, and 3-5 mu m waveband laser has urgent application demand in photoelectronic warfare field.Mesh
Before, Solid State Laser obtains mid-infrared laser output and mainly uses the indirect method for pumping based on optical parametric oscillation, in contrast, adopting
It is more simple and compact in principle design and laser structure with the novel middle infrared solid laser directly pumped.Fe2+:ZnSe
Laser is a kind of solid state laser that efficient mid-infrared laser output can be obtained by directly pumping, such laser has
Optical maser wavelength tuning range is wide, absorption band is compared with the advantages that wide, gain cross section is big, fluorescence quantum efficiency is high, in recent years by wide
General concern.Fe2+Ion in host material ZnSe in the form of section-wavelength reflect Absorption and emission spectra as shown in Figure 1,
Absorption cross-section peak value 0.97 × 10-18cm2Near 3 μm, emission cross section peak value 1.4 × 10-18cm2Near 4.3 μm.
Fe2+: ZnSe laser realized Fe at cryogenic conditions (15-180K) by Adams et al. in 1999 first2+:
The pulse laser of ZnSe monocrystalline exports, and realizes the wavelength tuning in 3.98~4.54 μ ms.Low operating temperatures will increase
Refrigerating plant is made troubles to application, and Kernal in 2005 et al. realizes pulse Fe under room temperature for the first time2+: ZnSe laser
Output.
3 mu m waveband burst pulse pumping sources of open report focus primarily upon all kinds of solid state lasers at present, and main includes adjusting Q
Laser, optical parametric oscillator and quantum cascade laser etc., using vertical incidence pump scheme, i.e., pump light optical path with
Resonator optical axis is overlapped.
At least there is following technological deficiency in existing laser: (1) current 3 mu m waveband burst pulse Solid State Laser source highest energy
For 35mJ, the Fe obtained in room temperature using this kind of laser pumping source2+: ZnSe laser highest energy is 6mJ, due to 3 mu m wavebands
The energy limit in burst pulse Solid State Laser source, Fe2+: the output of ZnSe laser is also restricted accordingly.(2) due to pumping light wave
Long and output Fe2+: ZnSe optical maser wavelength is close, and vertical incidence pump scheme is very high to requirements such as filming on mirror surface, is unfavorable for engineering
It realizes.
Summary of the invention
(1) technical problems to be solved
In view of above-mentioned technical problem, the present invention provides a kind of non-chain pulsed HF laser pumps worked under room temperature
The Fe at Pu2+: ZnSe laser, using non-chain Pulsed HF Laser as pumping source.
(2) technical solution
According to an aspect of the invention, there is provided a kind of Fe of non-chain pulsed HF laser pump (ing)2+: ZnSe laser,
Comprising: non-chain Pulsed HF Laser, focusing unit, Fe2+: ZnSe crystal, laser resonator, non-chain Pulsed HF Laser
As pumping source, for emitting pump light；The laser that focusing unit is used to issue non-chain Pulsed HF Laser focuses；Fe2+:
ZnSe crystal is used to be used as laser gain medium；Laser resonator realizes that amplification, output swash for vibrating to intracavitary photon
Light；The laser that non-chain Pulsed HF Laser issues focuses on the intracavitary Fe of laser resonance by focusing unit2+: ZnSe crystal
On, to Fe2+: ZnSe crystal is pumped, Fe2+: ZnSe crystal generates population inversion, in cavity mirror and output coupling
It closes and generates laser under the feedback effect for the resonant cavity that mirror is constituted, exported through output coupling mirror.
(3) beneficial effect
It can be seen from the above technical proposal that the Fe of the non-chain pulsed HF laser pump (ing) of the present invention2+: ZnSe laser is at least
Have the advantages that one of them:
(1) relative to solid state laser pumping source, the launch wavelength of non-chain pulsed HF laser is exactly in Fe2+:ZnSe
The absorption peak region of crystal, it is possible to provide the burst pulse pumping source of higher energy, to improve Fe2+: the output energy of ZnSe laser
Amount；
(2) low-angle oblique incidence pump scheme can reduce the requirement to hysteroscope plated film, be conducive to Project Realization；
(3) since crystal is there are certain damage threshold, low-angle bi-directional symmetrical pump scheme compares common pumping side
Case can make crystal bear higher pump energy, to improve Fe2+: the output energy of ZnSe laser.
Detailed description of the invention
Fig. 1 is Fe2+The Absorption and emission spectra that by section-wavelength in the form of is reflected of the ion in host material ZnSe shows
It is intended to.
Fig. 2 is the Fe of non-chain pulsed HF laser pump (ing) in first embodiment of the invention2+: the signal of ZnSe laser structure
Figure.
Fig. 3 is the Fe of non-chain pulsed HF laser pump (ing) in second embodiment of the invention2+: the signal of ZnSe laser structure
Figure.
Fig. 4 is the Fe of non-chain pulsed HF laser pump (ing) in third embodiment of the invention2+: the signal of ZnSe laser structure
Figure.
[main element]
M1: cavity mirror；
M2: output coupling mirror.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
Embodiment one: vertical incidence pump scheme
In first exemplary embodiment of the invention, a kind of Fe of non-chain pulsed HF laser pump (ing) is provided2+:
ZnSe laser.Fig. 2 is the Fe of non-chain pulsed HF laser pump (ing) in the present embodiment2+: ZnSe laser structure schematic diagram.Such as figure
Shown in 2, the Fe of the non-chain pulsed HF laser pump (ing) of the present invention2+: ZnSe laser includes: non-chain Pulsed HF Laser, focusing
Unit, Fe2+: ZnSe crystal, laser resonator.Non- chain Pulsed HF Laser is as pumping source, for emitting pump light.
The laser focusing that focusing unit is used to issue pumping source, as a kind of specific embodiment, focusing unit can be with
For condenser lens or concave mirror, it will be apparent to those skilled in the art that focusing unit is not limited thereto, as long as can be realized poly-
The structure of burnt function.
Fe2+: ZnSe crystal is used to be used as laser gain medium.
Laser resonator includes cavity mirror M1, output coupling mirror M2.Laser resonator be used for intracavitary photon into
Row oscillation, realizes amplification, the laser of final output high-energy.Wherein, cavity mirror M1 it is high to pump wavelength thoroughly, to defeated
Laser wave grows tall instead out.In the present embodiment, cavity mirror M1 can be concave mirror, and output coupling mirror M2 can be
Plane output coupling mirror, it will be appreciated by those skilled in the art that, cavity mirror and output coupling mirror are not limited thereto, only
It can be realized the structure of corresponding function.
In addition, the Fe of non-chain pulsed HF laser pump (ing)2+: ZnSe laser further includes diaphragm, for pump light
Spot carries out shaping, while can conveniently adjust pump energy.
The pulse laser that non-chain Pulsed HF Laser sending wavelength is 2.6-3.1 μm passes through through diaphragm and focuses list
First vertical focusing Fe intracavitary in laser resonance2+: on ZnSe crystal, to Fe2+: ZnSe crystal is pumped, laser gain medium
Fe2+: ZnSe crystal generates population inversion, in the anti-of the resonant cavity that the cavity mirror M1 and output coupling mirror M2 is constituted
Feedback effect is lower to generate laser, exports through the output coupling mirror M2.Fe2+: ZnSe laser beam axis passes through Fe2+: the work of ZnSe crystal
Face center, and it is vertical with cavity mirror M1, output coupling mirror M2 and crystal working face.
Embodiment two: low-angle oblique incidence pump scheme
In second exemplary embodiment of the invention, a kind of Fe of non-chain pulsed HF laser pump (ing) is provided2+:
ZnSe laser.Fig. 3 is the Fe of non-chain pulsed HF laser pump (ing) in the present embodiment2+: ZnSe laser structure schematic diagram.Such as figure
Fe shown in 3, with the non-chain pulsed HF laser pump (ing) of first embodiment2+: ZnSe laser is compared, the non-chain type arteries and veins of the present embodiment
Rush the Fe of HF laser pump (ing)2+: the difference of ZnSe laser is:
The pulse laser that non-chain Pulsed HF Laser sending wavelength is 2.6-3.1 μm passes through through diaphragm and focuses list
Member focuses on the intracavitary Fe of laser resonance (with the angle of laser resonator optical axis less than 15 °) at a certain angle2+: ZnSe crystal
On, to Fe2+: ZnSe crystal is pumped, laser gain medium Fe2+: ZnSe crystal generates population inversion, in the resonance
Laser is generated under the feedback effect for the resonant cavity that resonant reflec-tors M1 and output coupling mirror M2 is constituted, it is defeated through the output coupling mirror M2
Out.And it is not emitted to outside chamber along pump light optical path directly then by the pump light of absorption of crystal.
Embodiment three: low-angle bi-directional symmetrical pump scheme
In third exemplary embodiment of the invention, a kind of Fe of non-chain pulsed HF laser pump (ing) is provided2+:
ZnSe laser.Fig. 4 is the Fe of non-chain pulsed HF laser pump (ing) in the present embodiment2+: ZnSe laser structure schematic diagram.Such as figure
Fe shown in 4, with the non-chain pulsed HF laser pump (ing) of first embodiment2+: ZnSe laser is compared, the non-chain type arteries and veins of the present embodiment
Rush the Fe of HF laser pump (ing)2+: the difference of ZnSe laser is:
The Fe of non-chain pulsed HF laser pump (ing)2+: ZnSe laser further includes 50% beam splitting chip.
Non- chain Pulsed HF Laser issues the pulse laser that wavelength is 2.6-3.1 μm through diaphragm, through 50% beam splitting
Piece is divided into the identical pump light of two beams, then passes through the focusing unit (angle with laser resonator optical axis at a certain angle respectively
Less than 15 °) symmetric focused is in Fe2+: on two working faces (depth of parallelism is less than 30 ") that ZnSe crystal is parallel to each other, to Fe2+:
ZnSe crystal is pumped, laser gain medium Fe2+: ZnSe crystal generates population inversion, in the cavity mirror M1
Laser is generated under the feedback effect of the output coupling mirror M2 resonant cavity constituted, is exported through the output coupling mirror M2.And not by
The pump light of absorption of crystal is then directly emitted to outside chamber along respective pump light optical path respectively.
As a kind of specific embodiment, in the identical pump light of two beams, wherein a branch of pump light is directly over focusing list
Member focuses on Fe at a certain angle2+: the center of the first working face of ZnSe crystal, another beam pump light are reflected by reflector element
To focusing unit, Fe is focused at a certain angle using focusing unit2+: be parallel to the first working face second of ZnSe crystal
The center of working face.Wherein, reflector element includes reflecting mirror.It will be apparent to those skilled in the art that making the identical pumping of two beams
Light symmetric focused is in Fe2+: the mode on two working faces that ZnSe crystal is parallel to each other is not limited thereto, as long as can be realized
The identical pump light symmetric focused of two beams is in Fe2+: on two working faces that ZnSe crystal is parallel to each other.
So far, attached drawing is had been combined to the present invention have been described in detail.According to above description, those skilled in the art are answered
When to the Fe of the non-chain pulsed HF laser pump (ing) of the present invention2+: ZnSe laser has clear understanding.
It should be noted that in attached drawing or specification text, the implementation for not being painted or describing is affiliated technology
Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, the above-mentioned definition to each element and method is simultaneously
It is not limited only to various specific structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can carry out letter to it
It singly changes or replaces.
It should also be noted that, can provide the demonstration of the parameter comprising particular value herein, but these parameters are without definite etc.
In corresponding value, but analog value can be similar in acceptable error margin or design constraint.The side mentioned in embodiment
It is only the direction with reference to attached drawing to term, such as "upper", "lower", "front", "rear", "left", "right" etc., is not used to limit this
The protection scope of invention.Furthermore ordinal number such as " first ", " second ", " third " etc. used in specification and claim
Word, to modify corresponding element, itself simultaneously unexpectedly contains and represents the element and have any ordinal number, does not also represent certain unitary
The sequence or the sequence in manufacturing method of part and another element, the use of those ordinal numbers are only used to make one with certain name
Element is able to that clear differentiation can be made with another element with identical name.
In conclusion the present invention provides a kind of Fe of non-chain pulsed HF laser pump (ing)2+: ZnSe laser.The present invention can
To provide the burst pulse pumping source of higher energy, to improve Fe2+: the output energy of ZnSe laser.
It should be noted that running through attached drawing, identical element is indicated by same or similar appended drawing reference.In the following description,
Some specific embodiments are used for description purposes only, and should not be construed to the present invention has any restrictions, and only the present invention is real
Apply the example of example.When may cause the understanding of the present invention and cause to obscure, conventional structure or construction will be omitted.It should be noted that figure
In the shape and size of each component do not reflect actual size and ratio, and only illustrate the content of the embodiment of the present invention.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of Fe of non-chain pulsed HF laser pump (ing)2+: ZnSe laser comprising:
Non- chain Pulsed HF Laser, as pumping source, for emitting pump light；
Focusing unit, the laser for issuing the non-chain Pulsed HF Laser focus；
Fe2+: ZnSe crystal, for being used as laser gain medium；
Laser resonator realizes amplification, exports laser for vibrating to intracavitary photon；
The laser that the non-chain Pulsed HF Laser issues focuses on the intracavitary Fe of laser resonance by focusing unit2+:ZnSe
On crystal, to Fe2+: ZnSe crystal is pumped, Fe2+: ZnSe crystal generates population inversion, in cavity mirror and defeated
Laser is generated under the feedback effect for the resonant cavity that coupling mirror is constituted out, is exported through the output coupling mirror.
2. Fe according to claim 12+: ZnSe laser, wherein the cavity mirror is to pump wavelength height
Thoroughly, high to Output of laser wavelength anti-.
3. Fe according to claim 22+: ZnSe laser, wherein the cavity mirror is concave mirror, institute
Stating output coupling mirror is plane output coupling mirror.
4. Fe according to claim 12+: ZnSe laser, wherein further include:
Diaphragm is arranged between the non-chain Pulsed HF Laser and focusing unit, whole for carrying out to pump spot
Shape.
5. Fe according to claim 12+: ZnSe laser, wherein Fe2+: ZnSe laser beam axis passes through the Fe2+:
ZnSe crystal center of working face, and with the cavity mirror, output coupling mirror and Fe2+: ZnSe crystal working face is vertical.
6. Fe according to any one of claims 1 to 52+: ZnSe laser, wherein the laser vertical focusing after focusing exists
Fe2+: on ZnSe crystal.
7. Fe according to any one of claims 1 to 52+: ZnSe laser, wherein the laser after focusing is at a certain angle
Inclination focuses on Fe2+: on ZnSe crystal.
8. Fe according to any one of claims 1 to 52+: ZnSe laser, wherein further include:
50% beam splitting chip is arranged between the non-chain Pulsed HF Laser and focusing unit, for pump light to be divided into two
The identical pump light of beam；Wherein,
The identical pump light of two beams pass through respectively focusing unit at a certain angle symmetric focused in Fe2+: ZnSe crystal is parallel to each other
Two working faces on.
9. Fe according to claim 7 or 82+: ZnSe laser, wherein the certain angle is pumping optical axis and laser
Angle of the angle of resonator optical axis less than 15 degree.
10. Fe according to any one of claims 1 to 52+: ZnSe laser, wherein focusing unit is condenser lens or recessed
Face mirror.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710566385.1A CN109256666A (en) | 2017-07-12 | 2017-07-12 | The Fe of non-chain pulsed HF laser pump (ing)2+: ZnSe laser |
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| CN201710566385.1A CN109256666A (en) | 2017-07-12 | 2017-07-12 | The Fe of non-chain pulsed HF laser pump (ing)2+: ZnSe laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271547A (en) * | 2020-09-07 | 2021-01-26 | 中国科学院空天信息创新研究院 | Room-temperature large-energy Fe-CdTe mid-infrared laser |
| CN112582869A (en) * | 2020-12-08 | 2021-03-30 | 中国工程物理研究院激光聚变研究中心 | Infrared laser in lamp pump |
| CN115621825A (en) * | 2022-09-22 | 2023-01-17 | 深圳大学 | Intermediate infrared ultrashort pulse solid laser based on synchronous pump mode locking technology |
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| CN2498770Y (en) * | 2001-06-27 | 2002-07-03 | 中国科学院物理研究所 | Laser multi-channel pre-amplifier |
| CN2634681Y (en) * | 2003-08-11 | 2004-08-18 | 西北大学 | Frequency multiplier solid laser in laser diode pumping chamber |
| CN202872171U (en) * | 2012-10-16 | 2013-04-10 | 四川大学 | Laser output experimental device constructed by intermediate infrared wide spectrum tunable laser gain medium |
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2017
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| CN2498770Y (en) * | 2001-06-27 | 2002-07-03 | 中国科学院物理研究所 | Laser multi-channel pre-amplifier |
| CN2634681Y (en) * | 2003-08-11 | 2004-08-18 | 西北大学 | Frequency multiplier solid laser in laser diode pumping chamber |
| CN202872171U (en) * | 2012-10-16 | 2013-04-10 | 四川大学 | Laser output experimental device constructed by intermediate infrared wide spectrum tunable laser gain medium |
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| Title |
|---|
| S.D. VELIKANOV ET AL: "Fe2+ : ZnSe laser pumped by a nonchain electric-discharge HF laser at room temperature", 《QUANTUM ELECTRONICS》 * |
| 柯常军等: "室温Fe2+:ZnSe 激光器获得15 mJ 中红外激光输出", 《中国激光》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271547A (en) * | 2020-09-07 | 2021-01-26 | 中国科学院空天信息创新研究院 | Room-temperature large-energy Fe-CdTe mid-infrared laser |
| CN112582869A (en) * | 2020-12-08 | 2021-03-30 | 中国工程物理研究院激光聚变研究中心 | Infrared laser in lamp pump |
| CN115621825A (en) * | 2022-09-22 | 2023-01-17 | 深圳大学 | Intermediate infrared ultrashort pulse solid laser based on synchronous pump mode locking technology |
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Application publication date: 20190122 |