CN105006732A - Medium and small power LD parallelly pumped high-power green laser - Google Patents
Medium and small power LD parallelly pumped high-power green laser Download PDFInfo
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Abstract
The invention discloses a medium and small power LD parallelly pumped high-power green laser, which comprises a resonant cavity, frequency doubling crystals and parallelly connected end-pumped lasers, wherein the frequency doubling crystals are located in the resonant cavity so as to form a frequency doubling resonant cavity, each end-pumped laser comprises an end-pumped device formed by a pumping source, a coupling mirror and a laser crystal, a sub resonant cavity formed by a first totally reflecting mirror and a second totally reflecting mirror, a Q-switch arranged in the sub resonant cavity and a first output mirror used for reflecting and outputting fundamental frequency pulse laser, an included angle between an optical axis of each end-pumped laser and the first output mirror inside is 45 degrees, and the fundamental frequency pulse laser outputted by each first output mirror generates frequency doubling green laser after passing through the frequency doubling crystal, and the frequency doubling green laser is combined into a beam in the resonant cavity and then outputted from a second output mirror of the resonant cavity. The medium and low power LD parallelly pumped high-power green laser can acquire high laser power output and high beam quality.
Description
Technical field
The present invention relates to a kind of laser, particularly relate to a kind of middle low power LD pumping high frequency green laser in parallel.
Background technology
The high power solid green light laser of LD pumping due to have efficiency high, export light quality good, operate the advantages such as controlled, volume is little, energy is high and the life-span is long, it is made all to be widely used in numerous areas, as the pumping source of Materialbearbeitung mit Laserlicht, tunable laser, laser acquisition, environmental remote sensing detect and the light source etc. of large laser demonstration, become the focus competitively researched and developed in the world.The green laser system of processing of the materials such as the potsherd particularly risen gradually recent years, glass, pcb board, solar battery sheet, makes the high power solid green light laser of LD pumping be widely used in industrial circle.
High power LD pump module is adopted exactly concerning the method improving power output the most basic the solid state laser of LD pumping, but level semiconductor restriction at present, therefore this method difficulty is very large.Another one effectively improves the way of power output, is to adopt the series connection of multiple laser crystal bar to improve base band power, and wherein double stick series connection is the most common, and it both can obtain the Laser output proportional with excellent number, does not make again beam quality reduce too many.Many rod series connection major defects are along with each laser crystal bar of rising of power and the thermal lensing effect acting in conjunction of frequency-doubling crystal make resonant cavity unstability, reduce on the contrary along with pumping current increases power output, the method supposes that each lens forming element has identical thermal characteristics simultaneously.But for the Optical Maser System of reality, the thermal characteristics of each rod also exists difference, which results in the change of rods' matching and coupling characteristic, also affects the stability of Optical Maser System.
Summary of the invention
The object of this invention is to provide a kind of middle low power LD pumping high frequency green laser in parallel, the high thermal effect that laser crystal produces due to high power pump can be reduced, when ensureing that laser total pump power is high, there is high thermal stability, obtain high laser power and export and beam quality.
For achieving the above object, the invention provides a kind of middle low power LD pumping high frequency green laser in parallel, comprise resonant cavity, also comprise multiple frequency-doubling crystal and multiple end-pumped laser be in parallel, frequency-doubling crystal is positioned at resonant cavity and forms frequency multiplication resonant cavity, each end-pumped laser comprises by pumping source, the end pumping device that coupling mirror and laser crystal are formed, the sub resonant cavity be made up of the first total reflective mirror and the second total reflective mirror, be located in sub resonant cavity and produce the Q switching of fundamental frequency pulse laser and the first outgoing mirror for exporting fundamental frequency pulse laser for modulating, the angle of the optical axis of each end-pumped laser and the first outgoing mirror in it is 45 °, the fundamental frequency pulse laser that each first outgoing mirror exports to produce after frequency doubling green light through frequency-doubling crystal and exports in association bundle to resonant cavity and from the second outgoing mirror of resonant cavity.
As a further improvement on the present invention, described end-pumped laser is three, the first outgoing mirror close to two end-pumped lasers of the second outgoing mirror is 1064nm semi-transparent semi-reflecting lens, between the 1064nm semi-transparent semi-reflecting lens of these two end-pumped lasers, is provided with frequency-doubling crystal between the second outgoing mirror and the 1064nm semi-transparent semi-reflecting lens of close end-pumped laser; The first outgoing mirror away from the end-pumped laser of the second outgoing mirror is to 1064nm full impregnated, the 532nm total reflective mirror that is all-trans to 532nm, described resonant cavity is made up of the second total reflective mirror of the end-pumped laser away from the second outgoing mirror and the second outgoing mirror, is provided with frequency-doubling crystal away between the 532nm total reflective mirror of the end-pumped laser of the second outgoing mirror and the second total reflective mirror.
Further improve as of the present invention, described 1064nm semi-transparent semi-reflecting lens is coated with the part reflecting medium film to 1064nm and 808nm, 532nm anti-reflection film; Described 532nm total reflective mirror is level crossing, 532nm total reflective mirror is coated with to the high saturating deielectric-coating of 1064nm with to the high anti-deielectric-coating of 532nm; Described first total reflective mirror is level crossing, planoconvex lens or plano-concave mirror, the first total reflective mirror is coated with and 1064nm high anti-deielectric-coating thoroughly high to 808nm; Described second total reflective mirror is level crossing, planoconvex lens or plano-concave mirror, the second total reflective mirror is coated with to the high anti-deielectric-coating of 808nm, 1064nm and 532nm.
As a further improvement on the present invention, also comprise the 3rd total reflective mirror, described resonant cavity is made up of the 3rd total reflective mirror and the second outgoing mirror, described end-pumped laser is three, first outgoing mirror of three end-pumped lasers is all semi-transparent semi-reflecting to 1064nm, to 532nm full impregnated semi-transparent semi-reflecting lens, between two often adjacent semi-transparent semi-reflecting lens, is provided with frequency-doubling crystal between the 3rd total reflective mirror and the semi-transparent semi-reflecting lens of close end-pumped laser.
Further improve as of the present invention, described semi-transparent semi-reflecting lens is level crossing, semi-transparent semi-reflecting lens is coated with the deielectric-coating to the reflection of 1064nm part and 532nm anti-reflection film; Described first total reflective mirror is level crossing, planoconvex lens or plano-concave mirror, the first total reflective mirror is coated with and 1064nm high anti-deielectric-coating thoroughly high to 808nm; Described second total reflective mirror is level crossing, planoconvex lens or plano-concave mirror, the second total reflective mirror is coated with to the high anti-deielectric-coating of 808nm and 1064nm; Described 3rd total reflective mirror is level crossing, planoconvex lens or plano-concave mirror, the 3rd total reflective mirror is coated with to the high anti-deielectric-coating of 1064nm and 532nm.
Further improve as of the present invention, described second outgoing mirror is level crossing, planoconvex lens or plano-concave mirror, the second outgoing mirror is coated with the part reflecting medium film of the high anti-deielectric-coating of 1064nm and 532nm.
Further improve as of the present invention, described pumping source is the diode pumping source exporting 808nm wavelength pump light, and described coupling mirror is made up of two-piece type lens, and two panels lens are all coated with 808nm anti-reflection film, and described laser crystal is Nd:YAG crystal.
Further improve as of the present invention, described Q switching position adopts the acoustooptic Q-switching of vitreous silica, and its supersonic frequency is 40.68MHz, and Q switching is two-sided is coated with 1064nm anti-reflection film.
Further improve as of the present invention, described frequency-doubling crystal is LBO second harmonic crystal, and specification is 3 × 3 × 20mm, and frequency-doubling crystal is two-sided is coated with 1064nm, 532nm anti-reflection film.
Compared with prior art, the beneficial effect of middle low power LD of the present invention pumping high frequency green laser in parallel is as follows:
(1) multiple end-pumped laser provides fundamental frequency light, fundamental frequency light produces frequency multiplication in frequency multiplication resonant cavity, multiple middle low power pumping is become like this from a high power pump, reduce the high thermal effect that laser crystal produces due to high power pump, when ensureing that laser total pump power is high, there is high thermal stability, obtain high laser power and export and beam quality.
(2) compared with middle low power LD pumping high frequency green laser in parallel is connected with the many rods of tradition, the chamber aobvious reduction kept burning day and night of resonant cavity, fundamental frequency light without the need to shaking back and forth in the middle of many rods, reduce loss, in chamber, photon number density reduces, reduce possibility of laser crystal damage, solve the raising limiting pumping current because thermal birefringence effect and thermal lensing effect are serious, thus limit the problems such as the further raising of power output.
(3) middle low power LD pumping high frequency green laser in parallel is by the method for multiple middle low power pumping parallel connection excitement laser crystal, each sub resonant cavity is independent of one another, the 1064nm fundamental frequency light of each laser crystal institute radiation is independently shaken, do not interfere with each other, compared with employing high power pump source, ensure that total pump power is constant, and the pump power of each subsystem in parallel significantly reduces, the laser crystal caloric value that each end-pumped laser is corresponding is like this also just just low many than single high power pump or series connection chamber, the thermal lensing effect of each laser crystal is so not serious yet, thus the output beam quality obtained.
(4) fundamental frequency light that each end-pumped laser exports outputs to perpendicular to end-pumped laser optical axis direction through speculum or semi-transparent semi-reflecting lens, frequency-doubling crystal produces frequency doubling green light pulse, form the conjunction bundle exporting frequency doubling green light, decrease in pumping process in parallel, in order to ensure that each end-pumped laser exports the coherent superposition of light, end-pumped laser exports beam waist position and the size of light to adopt the means such as shaping or focusing to ensure, the relevant requirement that the angle of divergence is necessary equal, save high cost components and parts needed for the output light coherent superposition in the process of closing bundle, decrease to close in bundle process and positioning requirements is installed to the high accuracy of shaping mirror or focus lamp.
(5) middle low power LD pumping high frequency green laser in parallel is by closing beam system independently middle low power laser, be merged into a superpower laser, subsystem is formed by end-pumped laser and frequency-doubling crystal, form a middle low power pump green light laser module, such modularized design is conducive to later maintenance and replaces, or swap modules increases or reduces laser output power, be conducive to suitability for industrialized production and the industrialization of middle low power LD pumping high power UV laser in parallel.
By following description also by reference to the accompanying drawings, the present invention will become more clear, and these accompanying drawings are for explaining embodiments of the invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of middle low power LD of the present invention pumping high frequency green laser in parallel embodiment one.
Fig. 2 is the schematic diagram of middle low power LD of the present invention pumping high frequency green laser in parallel embodiment two.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, element numbers similar in accompanying drawing represents similar element.
Embodiment one
Please refer to Fig. 1, described middle low power LD pumping high frequency green laser in parallel comprises three frequency-doubling crystals, 7, three end-pumped laser 9 resonant cavity.Three end-pumped lasers 9 are in parallel setting, and the optical axis of three end-pumped lasers 9 is parallel, in three frequency-doubling crystals 7 wherein two be positioned at resonant cavity and form frequency multiplication resonant cavity.One end of resonant cavity is the second outgoing mirror 10.Each end-pumped laser 9 comprising the end pumping device be made up of pumping source 1, coupling mirror 2 and laser crystal 4, the sub resonant cavity be made up of the first total reflective mirror 3 and the second total reflective mirror 8, being located in sub resonant cavity for modulating the Q switching 5 of generation pulse laser and the optical axis angle at 45 ° for carrying out pulse laser to reflect the first outgoing mirror 6, first outgoing mirror 6 and end-pumped laser 9 exported.
The first outgoing mirror 6 close to two end-pumped lasers 9 of the second outgoing mirror 10 is 1064nm semi-transparent semi-reflecting lens, described 1064nm semi-transparent semi-reflecting lens is coated with the part reflecting medium film to 1064nm and 808nm, 532nm anti-reflection film, for making fundamental frequency light semi-transparent semi-reflecting, the fundamental frequency light of transmission continues in end-pumped laser 9, continue concussion and amplifies, and the fundamental frequency light of reflection produces frequency doubling green light on frequency-doubling crystal 7.Described frequency-doubling crystal 7 is provided with between the 1064nm semi-transparent semi-reflecting lens of these two end-pumped lasers 9, between the second outgoing mirror 10 and the 1064nm semi-transparent semi-reflecting lens of close end-pumped laser 9.The first outgoing mirror 6 away from the end-pumped laser 9 of the second outgoing mirror 10 is to 1064nm full impregnated, the 532nm total reflective mirror that is all-trans to 532nm.Described 532nm total reflective mirror is level crossing, and 532nm total reflective mirror is coated with to the high saturating deielectric-coating of 1064nm with to the high anti-deielectric-coating of 532nm, for making fundamental frequency light pass through, frequency doubled light reflects.Described resonant cavity is made up of the second total reflective mirror 8 of the end-pumped laser 9 away from the second outgoing mirror 10 and the second outgoing mirror 10, and the resonant cavity formed is L-type chamber, be provided with described frequency-doubling crystal 7 away between the 532nm total reflective mirror of the end-pumped laser of the second outgoing mirror 10 and the second total reflective mirror 8.
Described pumping source 1 is the diode pumping source exporting 808nm wavelength pump light.Described coupling mirror 2 is made up of two-piece type lens, and two panels lens are all coated with 808nm anti-reflection film, and magnification ratio is 1:2, inner for pump light being focused on laser crystal 4.First total reflective mirror 3 is chamber, one end mirrors of sub resonant cavity, can be level crossing, planoconvex lens or plano-concave mirror, it is coated with and 1064nm high anti-deielectric-coating thoroughly high to 808nm.Described laser crystal 4 is Nd:YAG crystal.Described Q switching 5 adopts the acoustooptic Q-switching of vitreous silica, and its supersonic frequency is 40.68MHz, and Q switching is two-sided is coated with 1064nm anti-reflection film, for modulating generation pulse laser.Described frequency-doubling crystal 7 is LBO second harmonic crystal, and specification is 3 × 3 × 20mm, and frequency-doubling crystal is two-sided is coated with 1064nm, 532nm anti-reflection film, adopts the critical phase place matching way of I, cutting angle (θ=90 °, Φ=12 °).Second total reflective mirror 8 is the other end chamber mirror of sub resonant cavity, can be level crossing, planoconvex lens or plano-concave mirror, it is coated with to the high anti-deielectric-coating of 808nm, 1064nm and 532nm.Described second outgoing mirror 10 is level crossing, planoconvex lens or plano-concave mirror, the second outgoing mirror 10 is coated with the part reflecting medium film of the high anti-deielectric-coating of 1064nm and 532nm.
During work, the pump light produced by pumping source 1 away from the end-pumped laser 9 of the second outgoing mirror 10 focuses on laser crystal 4 through coupling mirror 2 and carries out end pumping, fundamental frequency pulse laser is produced under the modulating action of Q switching 5, fundamental frequency light produces frequency doubling green light pulse after the first outgoing mirror 6 (532nm total reflective mirror) on frequency-doubling crystal 7, the 532nm green glow produced returns and outputs in the frequency multiplication resonant cavity vertical with end-pumped laser 9 optical axis by the first outgoing mirror 6 (532nm total reflective mirror) under the reflex of the second total reflective mirror 8, form a road independently end-face pump green light laser subsystem.
The pump light produced by pumping source 1 close to two end-pumped lasers 9 of the second outgoing mirror 10 focuses on laser crystal 4 through coupling mirror 2 and carries out end pumping, fundamental frequency pulse laser is produced under the modulating action of Q switching 5, fundamental frequency light is under the reflection of the first outgoing mirror 6 (1064nm semi-transparent semi-reflecting lens), there is half 1064nm laser to enter in the frequency multiplication resonant cavity vertical with end-pumped laser 9 optical axis, produce 532nm frequency doubling green light with frequency-doubling crystal 7.The green glow of three end-pumped lasers 9 closes bundle and is exported by the second outgoing mirror 10 in frequency multiplication resonant cavity.
Each end-pumped laser 9 and frequency-doubling crystal 7 form a subsystem module, form a middle low power pump green light laser module, such modularized design is conducive to suitability for industrialized production, be conducive to later maintenance and replace, or swap modules increases or reduces laser output power.
Embodiment two
Please refer to Fig. 2, described middle low power LD pumping high frequency green laser in parallel comprises three frequency-doubling crystals, 7, three end-pumped laser 9 resonant cavity.One end of resonant cavity is the second outgoing mirror 10, and the other end is the 3rd total reflective mirror 11, and resonant cavity is straight chamber.Three end-pumped lasers 9 are in parallel setting, and the optical axis of three end-pumped lasers 9 is parallel, and three frequency-doubling crystals 7 are all positioned at resonant cavity and form frequency multiplication resonant cavity, and frequency multiplication resonant cavity is vertical with the optical axis of each end-pumped laser 9.Each end-pumped laser 9 comprises by pumping source 1, the end pumping device that coupling mirror 2 and laser crystal 4 are formed, the sub resonant cavity be made up of the first total reflective mirror 3 and the second total reflective mirror 8, be located in sub resonant cavity for modulating the Q switching 5 of generation pulse laser and reflecting for being carried out by pulse laser the first outgoing mirror 6 exported, the optical axis angle at 45 ° of the first outgoing mirror 6 and end-pumped laser 9, first outgoing mirror 6 of three end-pumped lasers 9 is all semi-transparent semi-reflecting to 1064nm, to the semi-transparent semi-reflecting lens of 532nm full impregnated, described semi-transparent semi-reflecting lens is level crossing, semi-transparent semi-reflecting lens is coated with the deielectric-coating to the reflection of 1064nm part and 532nm anti-reflection film, for making fundamental frequency light semi-transparent semi-reflecting, frequency doubled light full impregnated.Between two often adjacent semi-transparent semi-reflecting lens, between the 3rd total reflective mirror 11 and the semi-transparent semi-reflecting lens of close end-pumped laser 9, be provided with described frequency-doubling crystal 7.
Described pumping source 1 is the diode pumping source exporting 808nm wavelength pump light.Described coupling mirror 2 is made up of two-piece type lens, and two panels lens are all coated with 808nm anti-reflection film, and magnification ratio is 1:2, inner for pump light being focused on laser crystal 4.First total reflective mirror 3 is chamber, one end mirrors of sub resonant cavity, can be level crossing, planoconvex lens or plano-concave mirror, it is coated with and 1064nm high anti-deielectric-coating thoroughly high to 808nm.Described laser crystal 4 is Nd:YAG crystal.Described Q switching 5 adopts the acoustooptic Q-switching of vitreous silica, and its supersonic frequency is 40.68MHz, and Q switching is two-sided is coated with 1064nm anti-reflection film, for modulating generation pulse laser.Described frequency-doubling crystal 7 is LBO second harmonic crystal, and specification is 3 × 3 × 20mm, and frequency-doubling crystal is two-sided is coated with 1064nm, 532nm anti-reflection film, adopts the critical phase place matching way of I, cutting angle (θ=90 °, Φ=12 °).Second total reflective mirror 8 is the other end chamber mirror of sub resonant cavity, can be level crossing, planoconvex lens or plano-concave mirror, it is coated with to the high anti-deielectric-coating of 808nm and 1064nm.Described second outgoing mirror 10 is level crossing, planoconvex lens or plano-concave mirror, the second outgoing mirror 10 is coated with the part reflecting medium film of the high anti-deielectric-coating of 1064nm and 532nm.Described 3rd total reflective mirror 11 is level crossing, planoconvex lens or plano-concave mirror, the 3rd total reflective mirror 11 is coated with to the high anti-deielectric-coating of 1064nm and 532nm.
During work, the pump light that each end-pumped laser 9 is produced by pumping source 1 focuses on laser crystal 4 through coupling mirror 2 and carries out end pumping, fundamental frequency pulse laser is produced under the modulating action of Q switching 5, fundamental frequency light is under the reflection of the first outgoing mirror 6 (semi-transparent semi-reflecting lens), namely enter vertical direction arrives in frequency multiplication resonant cavity, and frequency-doubling crystal 7 produces frequency doubling green light pulse.The green glow of three end-pumped lasers 10 is closed bundle and is reflected by the 3rd total reflective mirror 11 and finally exported by the second outgoing mirror 10 in frequency multiplication resonant cavity.
End-pumped laser 9 and frequency-doubling crystal 7 form a subsystem module, form a middle low power pump green light laser module, such modularized design is conducive to suitability for industrialized production, be conducive to later maintenance and replace, or swap modules increases or reduces laser output power.
The present invention can also have other embodiments, in other embodiments, end-pumped laser 9 can be 4 or 5 or more, and the quantity of frequency-doubling crystal 7 is identical with the quantity of end-pumped laser 9, thus the middle low power LD forming more than three tunnels pumping high frequency green laser in parallel.For combinations more than three tunnels, only need to add the subsystem module the same with the end-pumped laser 9 close to the second outgoing mirror 10 after three tunnel combinations, each subsystem module forms conjunction Shu Bingcong second outgoing mirror 10 and exports.
More than in conjunction with most preferred embodiment, invention has been described, but the present invention is not limited to the embodiment of above announcement, and should contain various carry out according to essence of the present invention amendment, equivalent combinations.
Claims (9)
1. a middle low power LD pumping high frequency green laser in parallel, comprise resonant cavity, it is characterized in that: also comprise multiple frequency-doubling crystal and multiple end-pumped laser be in parallel, frequency-doubling crystal is positioned at resonant cavity and forms frequency multiplication resonant cavity, each end-pumped laser comprises by pumping source, the end pumping device that coupling mirror and laser crystal are formed, the sub resonant cavity be made up of the first total reflective mirror and the second total reflective mirror, be located in sub resonant cavity and produce the Q switching of fundamental frequency pulse laser and the first outgoing mirror for exporting fundamental frequency pulse laser for modulating, the angle of the optical axis of each end-pumped laser and the first outgoing mirror in it is 45 °, the fundamental frequency pulse laser that each first outgoing mirror exports to produce after frequency doubling green light through frequency-doubling crystal and exports in association bundle to resonant cavity and from the second outgoing mirror of resonant cavity.
2. middle low power LD as claimed in claim 1 pumping high frequency green laser in parallel, it is characterized in that: described end-pumped laser is three, the first outgoing mirror close to two end-pumped lasers of the second outgoing mirror is 1064nm semi-transparent semi-reflecting lens, between the 1064nm semi-transparent semi-reflecting lens of these two end-pumped lasers, is provided with frequency-doubling crystal between the second outgoing mirror and the 1064nm semi-transparent semi-reflecting lens of close end-pumped laser; The first outgoing mirror away from the end-pumped laser of the second outgoing mirror is to 1064nm full impregnated, the 532nm total reflective mirror that is all-trans to 532nm, described resonant cavity is made up of the second total reflective mirror of the end-pumped laser away from the second outgoing mirror and the second outgoing mirror, is provided with frequency-doubling crystal away between the 532nm total reflective mirror of the end-pumped laser of the second outgoing mirror and the second total reflective mirror.
3. middle low power LD as claimed in claim 2 pumping high frequency green laser in parallel, is characterized in that: described 1064nm semi-transparent semi-reflecting lens is coated with the part reflecting medium film to 1064nm and 808nm, 532nm anti-reflection film; Described 532nm total reflective mirror is level crossing, 532nm total reflective mirror is coated with to the high saturating deielectric-coating of 1064nm with to the high anti-deielectric-coating of 532nm; Described first total reflective mirror is level crossing, planoconvex lens or plano-concave mirror, the first total reflective mirror is coated with and 1064nm high anti-deielectric-coating thoroughly high to 808nm; Described second total reflective mirror is level crossing, planoconvex lens or plano-concave mirror, the second total reflective mirror is coated with to the high anti-deielectric-coating of 808nm, 1064nm and 532nm.
4. middle low power LD as claimed in claim 1 pumping high frequency green laser in parallel, it is characterized in that: also comprise the 3rd total reflective mirror, described resonant cavity is made up of the 3rd total reflective mirror and the second outgoing mirror, described end-pumped laser is three, first outgoing mirror of three end-pumped lasers is all semi-transparent semi-reflecting to 1064nm, to 532nm full impregnated semi-transparent semi-reflecting lens, between two often adjacent semi-transparent semi-reflecting lens, is provided with frequency-doubling crystal between the 3rd total reflective mirror and the semi-transparent semi-reflecting lens of close end-pumped laser.
5. middle low power LD as claimed in claim 4 pumping high frequency green laser in parallel, is characterized in that: described semi-transparent semi-reflecting lens is level crossing, semi-transparent semi-reflecting lens is coated with the deielectric-coating to the reflection of 1064nm part and 532nm anti-reflection film; Described first total reflective mirror is level crossing, planoconvex lens or plano-concave mirror, the first total reflective mirror is coated with and 1064nm high anti-deielectric-coating thoroughly high to 808nm; Described second total reflective mirror is level crossing, planoconvex lens or plano-concave mirror, the second total reflective mirror is coated with to the high anti-deielectric-coating of 808nm and 1064nm; Described 3rd total reflective mirror is level crossing, planoconvex lens or plano-concave mirror, the 3rd total reflective mirror is coated with to the high anti-deielectric-coating of 1064nm and 532nm.
6. the pumping high frequency green laser in parallel of the middle low power LD as described in claim 1 or 2 or 4, it is characterized in that: described second outgoing mirror is level crossing, planoconvex lens or plano-concave mirror, the second outgoing mirror is coated with the part reflecting medium film of the high anti-deielectric-coating of 1064nm and 532nm.
7. the pumping high frequency green laser in parallel of the middle low power LD as described in claim 1 or 2 or 4, it is characterized in that: described pumping source is the diode pumping source exporting 808nm wavelength pump light, described coupling mirror is made up of two-piece type lens, two panels lens are all coated with 808nm anti-reflection film, and described laser crystal is Nd:YAG crystal.
8. the pumping high frequency green laser in parallel of the middle low power LD as described in claim 1 or 2 or 4, is characterized in that: described Q switching position adopts the acoustooptic Q-switching of vitreous silica, and its supersonic frequency is 40.68MHz, and Q switching is two-sided is coated with 1064nm anti-reflection film.
9. the pumping high frequency green laser in parallel of the middle low power LD as described in claim 1 or 2 or 4, it is characterized in that: described frequency-doubling crystal is LBO second harmonic crystal, and specification is 3 × 3 × 20mm, frequency-doubling crystal is two-sided is coated with 1064nm, 532nm anti-reflection film.
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| CN109669269A (en) * | 2018-04-24 | 2019-04-23 | 李芝宏 | Three-dimensional, which swashs combiner, enhances system and method |
| CN108711731A (en) * | 2018-08-28 | 2018-10-26 | 深圳市格镭激光科技有限公司 | A kind of both-end pumping polarized combination intracavity frequency doubling high frequency green laser |
| CN109794692A (en) * | 2019-03-21 | 2019-05-24 | 广州安特激光技术有限公司 | A kind of 532nm superhard material laser precision machining equipment |
| CN112467505A (en) * | 2020-12-14 | 2021-03-09 | 中国科学院合肥物质科学研究院 | Three-path coherent synthesis laser |
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| CN112467505B (en) * | 2020-12-14 | 2024-04-02 | 中国科学院合肥物质科学研究院 | Three-way coherent synthesis laser |
| CN112490837B (en) * | 2020-12-14 | 2024-04-02 | 中国科学院合肥物质科学研究院 | Four-way coherent combining laser |
| CN113675707A (en) * | 2021-08-24 | 2021-11-19 | 北京工业大学 | All-solid-state green laser |
| CN113675707B (en) * | 2021-08-24 | 2024-05-24 | 北京直方光电科技有限公司 | All-solid-state green laser |
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