CN116247492A - Athermalization and thermal insensitivity laser for single-wavelength angular pumping - Google Patents

Athermalization and thermal insensitivity laser for single-wavelength angular pumping Download PDF

Info

Publication number
CN116247492A
CN116247492A CN202211724945.9A CN202211724945A CN116247492A CN 116247492 A CN116247492 A CN 116247492A CN 202211724945 A CN202211724945 A CN 202211724945A CN 116247492 A CN116247492 A CN 116247492A
Authority
CN
China
Prior art keywords
group
laser
optical
pump module
lens
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.)
Pending
Application number
CN202211724945.9A
Other languages
Chinese (zh)
Inventor
王艳林
李阳
陈海波
林毅
李秀丽
向安荣
周军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei Huazhong Changjiang Photoelectric Technology Co ltd
Original Assignee
Hubei Huazhong Changjiang Photoelectric Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hubei Huazhong Changjiang Photoelectric Technology Co ltd filed Critical Hubei Huazhong Changjiang Photoelectric Technology Co ltd
Priority to CN202211724945.9A priority Critical patent/CN116247492A/en
Publication of CN116247492A publication Critical patent/CN116247492A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01S3/02—Constructional details
    • H01S3/04—Arrangements for thermal management
    • H01S3/042—Arrangements for thermal management for solid state lasers
    • 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
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0071—Beam steering, e.g. whereby a mirror outside the cavity is present to change the beam direction
    • 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
    • H01S3/02—Constructional details
    • H01S3/04—Arrangements for thermal management
    • H01S3/0404—Air- or gas cooling, e.g. by dry nitrogen
    • 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
    • H01S3/02—Constructional details
    • H01S3/04—Arrangements for thermal management
    • H01S3/0405—Conductive cooling, e.g. by heat sinks or thermo-electric elements
    • 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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10061—Polarization control
    • 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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
    • H01S3/1123—Q-switching
    • H01S3/115—Q-switching using intracavity electro-optic devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

The invention relates to a single-wavelength angle pumping athermalization and heat insensitive laser which comprises a lens fixing group, an optical rotation group, a polarization group, an electro-optical Q-switching group, an optical path adjusting group, a turning pyramid group, a bonding crystal body group, an angle side pump module group and a heat dissipation group. Wherein two lens fixed groups are arranged at one end of the laser side by side from top to bottom, the turning pyramid group is arranged at the other end of the laser, the upper lens fixed group, the optical rotation group, the polarizing group, the electro-optical Q-switching group and the optical path adjusting group are sequentially and commonly fixed at the upper part of the laser, and the lower lens fixed group and the bonding crystal group are commonly fixed at the lower part of the laser. The corner side pump module group and the heat dissipation group are all fixed around the bonding crystal group. When the angle side pump module group emits light, the light passes through the bonding crystal group and is reflected by the turning pyramid group, then sequentially passes through the light path adjusting group, the electro-optical Q-switching group, the polarizing group and the optical rotation group, and finally is emitted from the upper lens fixing group.

Description

Athermalization and thermal insensitivity laser for single-wavelength angular pumping
Technical Field
The invention relates to the technical field of solid lasers, in particular to a single-wavelength angle pumping athermalization and thermal insensitivity laser.
Background
The solid laser has very wide application in the fields of laser ranging, laser irradiation, laser imaging and the like, and the development direction is temperature control-free, low-power consumption, miniaturization and high stability. The existing solid laser on the market generally needs about 3 minutes of preparation time to work normally under the high-low temperature test environment, and is difficult to meet the use requirement. In addition, because the existence of the temperature control circuit leads to higher power consumption of related products, the endurance capacity of the battery is insufficient, and the sustainable operational capacity of the equipment is difficult to ensure.
I have previously developed a range of different types of solid state lasers, such as CN202695966U, CN107768968A, CN110911954A, CN111342331A, etc. On the basis, a novel single-wavelength angle pumping athermalization and thermal insensitivity laser is developed.
Disclosure of Invention
The invention aims to provide a single-wavelength angle pumping athermalization and thermal insensitivity laser which comprises a lens fixing group (1), an optical rotation group (2), a polarization group (3), an electro-optical Q-switching group (4), an optical path adjusting group (5), a turning pyramid group (6), a bonding crystal group (7), an angle side pump module group (8) and a heat dissipation group (9); the number of the lens fixing groups (1) is 2, the lens fixing groups are arranged at one end of the laser in parallel up and down, and the turning pyramid group (6) is arranged at the other end of the laser; the upper row of lens fixing groups (1), the optical rotation group (2), the polarizing group (3), the electro-optic Q-switching group (4) and the optical path adjusting group (5) are sequentially fixed on the upper part of the laser in a common optical path, and the lower row of lens fixing groups (1) and the bonding crystal group (7) are fixed on the lower part of the laser in a common optical path; the corner side pump module group (8) and the heat dissipation group (9) are fixed around the bonding crystal group (7); after the angle side pump module group (8) emits light, light directly enters the bonding crystal group (7) or enters the bonding crystal group (7) after being reflected by the lower-row lens fixing group (1), and after the light emitted from the bonding crystal group (7) is reflected by the turning pyramid group (6), the light sequentially passes through the light path adjusting group (5), the electro-optical Q-switching group (4), the polarizing group (3) and the optical rotation group (2), and finally is emitted from the upper-row lens fixing group (1).
Further, the lens fixing group (1) comprises an output lens (1-1) or a reflecting lens (1-2), a lens pressing ring (1-3), a lens fixing frame (1-4) and a sealing spacer ring (1-5), wherein the output lens (1-1) or the reflecting lens (1-2) is fixed in a mounting hole of the lens fixing frame (1-4) and is pressed by the lens pressing ring (1-3), and the lens fixing frame (1-4) is fixedly connected with the sealing spacer ring (1-5) to realize sealing.
Further, the output mirror (1-1) is a convex Gaussian output mirror, and the reflecting mirror (1-2) is a concave mirror.
Further, the optical rotation group (2) comprises a mounting seat (2-1), a wave plate (2-2) and a pressing ring (2-3), wherein the wave plate (2-2) is fixed in a mounting hole of the mounting seat (2-1) and is pressed by the pressing ring (2-3). The optical rotation group is mainly used for improving the depolarization effect of the pyramid and increasing the laser energy output.
Further, the wave plate (2-2) is specifically a 1/4 lambda vacuum zero-order wave plate.
Further, the polarizer group (3) comprises a polarizer mounting seat (3-1) and a polarizer (3-2), wherein the polarizer (3-2) is glued on the polarizer mounting seat (3-1). The polarizer is mainly used for controlling the polarization state of laser to be linearly polarized light, and provides guarantee for the Q-switching operation of the electro-optic light.
Furthermore, the polarizer (3-2) is a polarization beam splitter prism, and the parallel difference of the two light transmission surfaces is 10'.
Further, the electro-optic Q-switching group (4) comprises a Q-switching installation insulating seat (4-1), an electro-optic Q-switching crystal (4-2) and a fixing seat (4-3), wherein the electro-optic Q-switching crystal (4-2) is fixed on the Q-switching installation insulating seat (4-1), and the fixing seat (4-3) is fixed on the Q-switching installation insulating seat (4-1). The electro-optical Q-switching group is mainly matched with external driving for use, and a switch for controlling laser output achieves pulse output.
Furthermore, the electro-optic Q-switching crystal (4-2) is a KTP crystal, and the crystal is a specially-customized crystal, so that the high-temperature and low-temperature performance is more stable.
Further, the light path adjusting group (5) comprises an optical wedge mounting seat (5-1), an optical wedge (5-2), an optical wedge seat (5-3) and an optical wedge pressing ring (5-4), wherein the optical wedge (5-2) is glued in the optical wedge mounting seat (5-1) and is pressed by the optical wedge pressing ring (5-4), and the optical wedge mounting seat 5-1 is fixed on the optical wedge seat (5-3).
Further, the optical wedge (5-2) is a 15' optical wedge.
Further, the turning pyramid group (6) comprises a pyramid prism (6-1), a rubber pad (6-2) and a pressing plate (6-3), wherein the pyramid prism (6-1) is fixed in a fixing groove at the end part of the laser and is pressed by the rubber pad (6-2), and the pressing plate (6-3) is connected with the fixing groove and is locked. The turning pyramid group is mainly used for turning the laser path and increasing the length of the laser resonant cavity within a limited length.
Further, the corner cube (6-1) is specifically a corner cube. The prism has auto-collimation characteristic, namely, incident light and emergent light are always parallel, so that consistency of a resonant light path is ensured.
Furthermore, the bonding crystal group (7) comprises a YAG bonding crystal body (7-1), a crystal heat sink (7-2), a crystal pressing block I (7-3) and a crystal pressing block II (7-4), wherein the YAG bonding crystal body (7-1) is glued on the crystal heat sink (7-2) by adopting heat-conducting silicon rubber, and the crystal pressing block I (7-3) and the crystal pressing block II (7-4) are respectively fixed at two ends of the YAG bonding crystal body (7-1).
Further, the angular side pump module group (8) comprises a heat sink (8-1), a multi-wavelength angular side pump module (8-2) and a temperature sensor (8-3), wherein the multi-wavelength angular side pump module (8-2) is fixedly connected with the heat sink (8-1), and the temperature sensor (8-3) is fixed in the heat sink (8-1). The temperature sensor is used for monitoring the temperature of the multi-wavelength angle side pump module in real time and feeding back the temperature to the control circuit to protect the multi-wavelength angle side pump module.
Furthermore, the number of the angle side pump module groups (8) is 2, the angle side pump module groups and the angle side pump module groups are inclined at a certain angle to face the bonding crystal group (7), and the wavelength distribution of the angle side pump module groups is 792.2nm, 811.8nm and 823nm.
Further, the heat dissipation group (9) comprises at least one of a heat dissipation sheet (9-1) and a fan (9-3). The heat dissipation group is mainly used for heat dissipation of the corner side pump module group.
Compared with the existing similar products, the single-wavelength angle pumping athermalization and thermal insensitivity laser provided by the invention has the advantages of no temperature control, low power consumption, miniaturization, compactness, stability, sustainable work and the like, can work without temperature control in a temperature range of-45 ℃ to 65 ℃ when being started, and can output 1064nm single-wavelength laser with laser energy not less than 80mJ. In addition, the resonant cavity structure of the laser is convenient to debug, the Gaussian mirror is matched with the pyramid to form the laser resonant cavity, the anti-maladjustment stability is good, the laser output beam divergence angle is small, the film system damage of an optical element in the cavity is avoided, and the purposes of stability and miniaturization are achieved while temperature control and low power consumption are avoided.
The invention also fully considers the influence of the output wavelength drift, the amplification and the loss of the single-pass gain, the length of the laser medium and the doping concentration absorption thermal effect on the laser output energy and the stability under the environmental test, optimizes and combines the output wavelength drift, the single-pass gain amplification and the loss, the length of the laser medium and the doping concentration absorption thermal effect, ensures the low emitted heat, the high absorption efficiency and the stable heat balance, and realizes the single-wavelength laser output, the small volume weight and the stable performance under the reliable output conditions of ensuring the free temperature control and the low power consumption of the laser. All the component structural parts of the whole laser are common metal material parts or plastic parts, and no special processing technology is needed in manufacturing, so that the manufacturing cost is reduced, the production efficiency is improved, and the requirements of temperature control-free starting-up operation, low power consumption, miniaturization and sustainable operation of the military laser can be met.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of a laser of the present invention;
FIG. 2 is a cross-sectional view of a lens retaining set of the present invention;
FIG. 3 is a cross-sectional view of an optical rotatory group of the present invention;
FIG. 4 is a cross-sectional view of a polarizing set of the present invention;
FIG. 5 is a left side view of the electro-optic Q-switch of the present invention;
FIG. 6 is a cross-sectional view of the optical path adjustment group of the present invention;
FIG. 7 is a sectional view of the folding pyramid block of the present invention;
FIG. 8 is a top view of a bonded wafer stack according to the present invention;
FIG. 9 is a front view of the corner side pump module set of the present invention;
fig. 10 is a front view of the heat dissipating unit of the present invention.
Detailed Description
In order to make the technical scheme and the beneficial effects of the present invention fully understood by those skilled in the art, the following description is further made with reference to specific embodiments and drawings.
The single wavelength angle pumping athermalized and thermally insensitive laser shown in fig. 1 mainly comprises a lens fixing group 1, an optical rotation group 2, a polarization group 3, an electro-optical Q-switching group 4, an optical path adjusting group 5, a turning pyramid group 6, a bonding crystal group 7, an angle side pump module group 8, a heat dissipation group 9, a cover plate 10 for sealing the laser opening cabin and the lens fixing group 1 from right to left and from top to bottom, and the following description is respectively carried out one by one in combination with corresponding schematic diagrams.
As shown in FIG. 2, the lens fixing groups 1 are arranged side by side up and down in total, and the lens fixing groups are similar in structure and comprise an output lens 1-1 or a reflecting lens 1-2, a lens pressing ring 1-3, a lens fixing frame 1-4 and a sealing spacer ring 1-5. The output mirror 1-1 and the reflecting mirror 1-2 are respectively arranged in different lens fixing frames 1-4, the lens pressing ring 1-3 is arranged on the output mirror 1-1 or the reflecting mirror 1-2 and is used for pressing the output mirror 1-1 or the reflecting mirror 1-2, and the sealing spacer ring 1-5 is arranged in the lens fixing frames 1-4. The output mirror 1-1 is a convex Gaussian output mirror, and is mainly used for laser output; the reflecting mirror 1-2 is a concave mirror which is mainly used for realizing total reflection of the light path; the sealing spacer ring 1-5 is mainly used for dust prevention, and the lens pressing ring 1-3 is mainly used for fastening lenses. The whole cavity of the laser is of a concave-convex unstable cavity structure, the film plating of all optical components in the cavity is an antireflection film with the thickness of 1.064 mu m, the transmittance is more than 99.8%, and the total reflection mirror has the reflectance of 99.8% for 1.064 mu m.
As shown in FIG. 3, the optical rotation group 2 mainly comprises a mounting seat 2-1, a wave plate 2-2 (1/4λ vacuum zero-order wave plate) and a pressing ring 2-3. The wave plate 2-2 is arranged in the mounting hole of the mounting seat 2-1, and the pressing ring 2-3 is arranged in the mounting seat 2-1 and presses the wave plate. The mounting seat 2-1 is provided with an arc groove for rotating the wave plate, and the wave plate 2-2 is rotated through the arc groove according to actual conditions during use, so that the clamping ring 2-3 is fastened when the laser energy is maximum.
As shown in fig. 4, the polarizer group 3 includes a polarizer mount 3-1 and a polarizer 3-2. The material of the polarizer mounting seat 3-1 is 4J45, and the polarizer 3-2 is glued on the polarizer mounting seat 3-1 and is used for controlling the polarization state of laser to be linearly polarized light, so that guarantee is provided for the electro-optic Q-switching operation. The polarizer (3-2) is a polarization beam splitter prism, and the parallel difference of the two light-passing surfaces is 10'.
As shown in fig. 5, the electro-optic Q-switching group 4 includes a Q-switching mounting insulator 4-1, an electro-optic Q-switching crystal 4-2 (KTP crystal), and a holder 4-3. The electro-optic Q-switching crystal 4-2 is arranged on the Q-switching installation insulating base 4-1, and the fixing base 4-3 is arranged on the Q-switching installation insulating base 4-1.
As shown in fig. 6, the optical path adjusting group 5 includes an optical wedge mounting seat 5-1, an optical wedge 5-2 (15' optical wedge), an optical wedge seat 5-3, and an optical wedge pressing ring 5-4. The optical wedge seat 5-3 is provided with an arc-shaped groove, and the optical wedge 5-2 is glued in the optical wedge mounting seat 5-1 and the relative position of the optical wedge is adjusted through the arc-shaped groove. The optical wedge mounting seat 5-1 is arranged in the optical wedge seat 5-3 and is fastened by a screw, the optical wedge pressing ring 5-4 is arranged in the optical wedge seat 5-3, and the correction of laser resonance is realized by rotating the optical wedge 5-2.
As shown in fig. 7, the optical path deflecting group 6 includes a corner cube 6-1, a rubber pad 6-2, and a pressing plate 6-3. The pyramid prism 6-1 is arranged in a fixed groove at the end part of the laser, the rubber pad 6-2 is arranged at the concave part of the pressing plate 6-3, and the pressing plate 6-3 is arranged on the fixed groove and fastened by a screw.
As shown in FIG. 8, the bonding crystal group 7 includes a YAG bonding crystal 7-1, a crystal heat sink 7-2, and crystal compacts I7-3, II 7-4. YAG bonding crystal 7-1 is glued on crystal heat sink 7-2 by heat conduction silicon rubber, and crystal pressing block I7-3 and crystal pressing block II 7-4 are both installed on the surface of YAG bonding crystal 7-1 and fastened by screws. The bonding crystal body is specifically a YAG plate strip doped with 1% of Nd, the length of the bonding crystal body is 65mm, and the bonding crystal body is prepared by adopting a diffusion glue-free bonding method. By bonding the self-radiating light absorption (non-absorbing to pump light) material structure on the periphery of the side surface of the composite crystal gain medium, the parasitic oscillation loop is cut off, the problems of ASE and parasitic oscillation consumption and energy storage caused by high-density inversion particle energy storage in the Q-switching process are overcome, the light-to-light conversion efficiency of a laser is improved, the equipment volume and weight are reduced, the power consumption of a battery is reduced, and the compactness and the light weight are realized.
As shown in fig. 9, the corner side pump module group 8 includes a heat sink 8-1, a multi-wavelength corner side pump module 8-2, and a temperature sensor 8-3. The multi-wavelength angular side pump module 8-2 is mounted on the heat sink 8-1 and fastened by screws, and the temperature sensor 8-3 is mounted in the heat sink 8-1. The wavelength distribution of the multi-wavelength angle side pump module 8-2 is 792.2nm, 811.8nm and 823nm, the pump light is limited in the gain medium by bonding undoped YAG outside the gain medium crystal with the absorption layer, the pump light can turn back after multiple reflections, the absorption length is increased, the complete absorption of the gain medium on the minimum absorption coefficient of the pump light is realized, and the pump absorption efficiency is basically unchanged when the wavelength of the pump light is changed in a wide temperature range.
As shown in fig. 10, the heat radiation group 9 includes a heat radiation fin 9-1, a fan mount 9-2, and a fan 9-3. The fan 9-3 is mounted in the fan mount 9-2, and the fan mount 9-2 is mounted on the heat sink 9-1. The heat dissipation group is mainly used for carrying out forced cooling heat dissipation on the diagonal side pump module group.
The laser power supply is electrified, the angular side pump module 8 emits light, and the laser power supply sequentially passes through Nd: YAG bonding crystal 7-1, pyramid prism 6-1, light path adjusting group 5-2, electro-optic Q-switching crystal 4-2, polarizer 3-2, reflector 1-2 and output mirror 1-1 form oscillation in resonant cavity; after laser is oscillated stably, the laser is emitted by an output mirror 1-1 to realize pulse laser output. The laser provided by the invention can work without temperature control in the temperature range of-45 ℃ to 65 ℃ and outputs 1064nm single wavelength, the laser energy is not less than 80mJ, the power consumption is low, the debugging is simple and convenient, the laser output beam divergence angle is small, and the output laser stability is high.

Claims (10)

1. A single wavelength angle pumping athermalization, heat insensitive laser, characterized by: the laser comprises a lens fixing group (1), an optical rotation group (2), a polarization group (3), an electro-optic Q-switching group (4), an optical path adjusting group (5), a turning pyramid group (6), a bonding crystal group (7), an angle side pump module group (8) and a heat dissipation group (9); the number of the lens fixing groups (1) is 2, the lens fixing groups are arranged at one end of the laser in parallel up and down, and the turning pyramid group (6) is arranged at the other end of the laser; the upper row of lens fixing groups (1), the optical rotation group (2), the polarizing group (3), the electro-optic Q-switching group (4) and the optical path adjusting group (5) are sequentially fixed on the upper part of the laser in a common optical path, and the lower row of lens fixing groups (1) and the bonding crystal group (7) are fixed on the lower part of the laser in a common optical path; the corner side pump module group (8) and the heat dissipation group (9) are fixed around the bonding crystal group (7); after the angle side pump module group (8) emits light, light directly enters the bonding crystal group (7) or enters the bonding crystal group (7) after being reflected by the lower-row lens fixing group (1), and after the light emitted from the bonding crystal group (7) is reflected by the turning pyramid group (6), the light sequentially passes through the light path adjusting group (5), the electro-optical Q-switching group (4), the polarizing group (3) and the optical rotation group (2), and finally is emitted from the upper-row lens fixing group (1).
2. A laser as defined in claim 1, wherein: the lens fixing set (1) comprises an output lens (1-1) and a reflecting lens (1-2), wherein the output lens (1-1) is a convex Gaussian output lens, and the reflecting lens (1-2) is a concave lens.
3. A laser as defined in claim 1, wherein: the optical rotation group (2) comprises a wave plate (2-2), wherein the wave plate (2-2) is specifically a 1/4 lambda vacuum zero-order wave plate.
4. A laser as defined in claim 1, wherein: the polarizer group (3) comprises a polarizer (3-2), wherein the polarizer (3-2) is a polarization beam splitter prism, and the parallel difference of two light-passing surfaces is 10'.
5. A laser as defined in claim 1, wherein: the electro-optic Q-switching group (4) comprises an electro-optic Q-switching crystal (4-2), wherein the electro-optic Q-switching crystal (4-2) is a KTP crystal.
6. A laser as defined in claim 1, wherein: the optical path adjusting group (5) comprises an optical wedge (5-2), wherein the optical wedge (5-2) is particularly a 15' optical wedge.
7. A laser as defined in claim 1, wherein: the turning corner cube group (6) comprises corner cubes (6-1), wherein the corner cubes (6-1) are specifically corner cubes.
8. A laser as defined in claim 1, wherein: the bonding crystal group (7) comprises Nd-YAG bonding crystals (7-1).
9. A laser as defined in claim 1, wherein: the angular side pump module group (8) comprises a heat sink (8-1), a multi-wavelength angular side pump module (8-2) and a temperature sensor (8-3), wherein the multi-wavelength angular side pump module (8-2) is fixedly connected with the heat sink (8-1), and the temperature sensor (8-3) is fixed in the heat sink (8-1); the number of the angular side pump module groups (8) is 2, the two groups are inclined at a certain angle and face the bonding crystal group (7), and the wavelength distribution of the angular side pump module groups is 792.2nm, 811.8nm and 823nm.
10. A laser as defined in claim 1, wherein: the heat dissipation group (9) comprises at least one of a heat dissipation fin (9-1) and a fan (9-3).
CN202211724945.9A 2022-12-28 2022-12-28 Athermalization and thermal insensitivity laser for single-wavelength angular pumping Pending CN116247492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211724945.9A CN116247492A (en) 2022-12-28 2022-12-28 Athermalization and thermal insensitivity laser for single-wavelength angular pumping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211724945.9A CN116247492A (en) 2022-12-28 2022-12-28 Athermalization and thermal insensitivity laser for single-wavelength angular pumping

Publications (1)

Publication Number Publication Date
CN116247492A true CN116247492A (en) 2023-06-09

Family

ID=86625309

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211724945.9A Pending CN116247492A (en) 2022-12-28 2022-12-28 Athermalization and thermal insensitivity laser for single-wavelength angular pumping

Country Status (1)

Country Link
CN (1) CN116247492A (en)

Similar Documents

Publication Publication Date Title
US6362919B1 (en) Laser system with multi-stripe diode chip and integrated beam combiner
EP0306136B1 (en) Modulated blue laser source
US5341388A (en) Laser light beam generating apparatus
US7724797B2 (en) Solid-state laser arrays using nonlinear frequency conversion in periodically poled materials
JPH04345078A (en) Laser light generating equipment
KR100267126B1 (en) Compact diode pumped solid state laser
US20070264734A1 (en) Solid-state laser device and method for manufacturing wavelength conversion optical member
US8213480B2 (en) Multiple emitter VECSEL
TWI487993B (en) Wavelength conversion element and wavelength conversion laser device
KR100898129B1 (en) Green laser module package
CN113054524B (en) Time-sharing synthesized optical parametric oscillation device
US9172201B2 (en) Wavelength conversion laser light source, and image display device
CN116247492A (en) Athermalization and thermal insensitivity laser for single-wavelength angular pumping
CN103311794A (en) Solid laser with annular polarization compensation
CN101242070B (en) Solid laser of semiconductor pumping
JP4968210B2 (en) Polarization-independent optical isolator
CN111799650A (en) Saturated absorption spectrum frequency stabilization optical system with cat eye reflector
CN111342331A (en) Semiconductor side pumping temperature-control-free laser
CN112636147A (en) Satellite-borne high-energy all-solid-state slab laser system
WO2010138116A1 (en) Compact and efficient visible laser source with high speed modulation
CN218828399U (en) Temperature control and debugging free solid laser
CN216251607U (en) All-solid-state laser with high environmental adaptability
US5506854A (en) Integrated, intracavity, frequency-converted slab laser
CN113540952B (en) LD pumping structure capable of being opened and used immediately under high and low temperature environment and Q-switched laser
CN203233046U (en) Annular polarization-compensation solid-state laser

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination