CN208782230U - Bicrystal green (light) laser - Google Patents
Bicrystal green (light) laser Download PDFInfo
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- CN208782230U CN208782230U CN201821555690.7U CN201821555690U CN208782230U CN 208782230 U CN208782230 U CN 208782230U CN 201821555690 U CN201821555690 U CN 201821555690U CN 208782230 U CN208782230 U CN 208782230U
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Abstract
A kind of bicrystal green (light) laser, including the first pump laser, the second pump laser, the first focus pack, the second focus pack, resonant component, first laser crystal, second laser crystal, adjusting Q crystal and frequency-doubling crystal；Resonant component constitutes laser resonator；When exporting the 532nm pulsed light of low-repetition-frequency, the first pump laser exports pump light, and first laser crystal generates 1064nm laser；When exporting the 532nm pulsed light of high repetition frequency, the second pump laser exports pump light, and second laser crystal generates 1064nm laser；Under the modulation of adjusting Q crystal and frequency-doubling crystal, the intracavitary formation 532nm pulsed light of laser resonance is exported outside laser resonator；By first laser crystal and difference of the second laser crystal on the life time of the level, when so as to switch single laser resonator between low-repetition-frequency output and high repetition frequency output, the 532nm pulse optical power of output keeps stablizing.
Description
Technical field
The utility model relates to laser technology fields, more particularly to a kind of bicrystal green (light) laser.
Background technique
Laser is one of the great utility model in modern science technology, wherein the 532nm laser of end pumping is applied to
Cold working field, the application value in metal, nonmetallic and Precision Machining are especially prominent.It is higher due to holding pump can get
Beam quality, acquisition beam quality is excellent, and the end of the long-acting stable operation of energy pumps green laser, goes to growing laser processing
Industry is significant.
The general single-ended pumping of end-pumped laser or both-end pumping laser crystal on the market, then utilize Q switched element
Resonant cavity is carried out to adjust to form pulsed light.In practical application, the parameter of high frequency low frequency can be carried out different operating, tradition side is utilized
The pulsed light mean power that formula is formed can change at different frequencies, can not be simultaneously under high repetition frequency and low-repetition-frequency
There is preferable power stability, causes the 532nm pulsed light of high repetition frequency and low-repetition-frequency defeated by different equipment
Out, the equipment input cost of laser processing is caused to improve.
Utility model content
Based on this, it is necessary to provide a kind of can stablize in high repetition frequency and low-repetition-frequency and export 532nm pulsed light
Bicrystal green (light) laser.
A kind of bicrystal green (light) laser, which is characterized in that including the first pump laser, the second pump laser, with
Corresponding first focus pack of first pump laser, the second focus pack corresponding with second pump laser,
Resonant component, first laser crystal, second laser crystal, adjusting Q crystal and frequency-doubling crystal；The resonant component include first before
End mirror, turning mirror, the first tail end mirror and the second tail end mirror before end mirror, second；End mirror before end mirror, described second before described first,
The turning mirror, the first tail end mirror and the second tail end mirror constitute laser resonator；End mirror and described second before described first
Preceding end mirror is correspondingly arranged；The turning mirror respectively with described first before end mirror, the first tail end mirror be correspondingly arranged；Described second
End mirror is correspondingly arranged before tail end mirror and described second；The first laser crystal, second laser crystal setting are described the
Before one before end mirror and described second between end mirror；The adjusting Q crystal and frequency-doubling crystal setting are intracavitary in the laser resonance；
When exporting the 532nm pulsed light of low-repetition-frequency, first pump laser exports pump light, first pump laser
The pump light of output focuses on the first laser crystal through first focus pack, and the first laser crystal swashs described
1064nm laser is generated in optical cavity；It is brilliant that the second laser is transmitted by the 1064nm laser that the first laser crystal generates
Body；When exporting the 532nm pulsed light of high repetition frequency, second pump laser exports pump light, and second pumping swashs
The pump light of light device output focuses on the second laser crystal through second focus pack, and the second laser crystal is in institute
State the intracavitary generation 1064nm laser of laser resonance；The 1064nm laser transmission described first generated by the second laser crystal swashs
Luminescent crystal；Under the modulation of the adjusting Q crystal, the intracavitary formation 1064nm pulsed light of laser resonance, 1064nm pulsed light warp
When crossing the frequency-doubling crystal, part 1064nm pulsed light is converted to 532nm pulsed light；532nm pulse laser transmits the turnover
Mirror is output to outside the laser resonator.
Above-mentioned bicrystal green (light) laser, by being swashed by the first pumping when exporting the 532nm pulsed light of low-repetition-frequency
Light device exports pump light, and first laser crystal generates 1064nm laser, when exporting the 532nm pulsed light of high repetition frequency, by
Second pump laser exports pump light, and second laser crystal generates 1064nm laser, is swashed by first laser crystal and second
Difference of the luminescent crystal on the life time of the level, so as to keep single laser resonator defeated with high repetition frequency in low-repetition-frequency output
When switching between out, the 532nm pulse optical power of output keeps stablizing, low so as to be realized using the equipment of separate unit laser processing
Repetition rate and stablizing for high repetition frequency 532nm pulsed light export.
The first laser crystal is Nd:YAG in one of the embodiments, and the second laser crystal is Nd:
YVO4。
The two-sided plating 1064nm of the first laser crystal and the second laser crystal increases in one of the embodiments,
Permeable membrane.
The two-sided plating 808/ of the first laser crystal and the second laser crystal in one of the embodiments,
880nm anti-reflection film.
It in one of the embodiments, further include diaphragm, the diaphragm is equipped with light hole, and the light hole is in described
Between first laser crystal and the second laser crystal.
It in one of the embodiments, further include optical fiber component, the optical fiber component includes the first transmission fiber and second
Transmission fiber；First pump laser couples first transmission fiber and exports pump light, second pump laser
Couple the second transmission fiber output pump light.
The optical fiber component further includes first be correspondingly arranged with first focus pack in one of the embodiments,
Fixing piece, the output end of first transmission fiber are fixed on first fixing piece.
The optical fiber component further includes second be correspondingly arranged with second focus pack in one of the embodiments,
Fixing piece, the output end of second transmission fiber are fixed on second fixing piece.
First focus pack includes the first plano-convex lens and the second plano-convex lens, institute in one of the embodiments,
The convex surface for stating the first plano-convex lens is opposite with the convex surface of second plano-convex lens.
Second focus pack includes third plano-convex lens and the 4th plano-convex lens, institute in one of the embodiments,
The convex surface for stating third plano-convex lens is opposite with the convex surface of the 4th plano-convex lens.
Detailed description of the invention
Fig. 1 is the structure chart of the bicrystal green (light) laser of a preferred embodiment of the utility model；
Fig. 2 is between power, pulsewidth and the repetition rate of the pulsed light of bicrystal green (light) laser shown in FIG. 1 output
Graph of relation.
Specific embodiment
The utility model will be described more fully below for the ease of understanding the utility model,.But this is practical
It is novel to realize in many different forms, however it is not limited to embodiment described herein.On the contrary, providing these implementations
The purpose of example is to make the understanding of the disclosure of the utility model more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.
Referring to Fig. 1, being the bicrystal green (light) laser 100 of one better embodiment of the utility model, for exporting
532nm pulsed light.The bicrystal green (light) laser 100 includes the first pump laser 11, the second pump laser 12 and first
Corresponding first focus pack 21 of pump laser 11, second focus pack 22 corresponding with the second pump laser 12, resonance
Component, first laser crystal 40, second laser crystal 50, adjusting Q crystal 60 and frequency-doubling crystal 70；Resonant component include first before
End mirror 32, turning mirror 33, the first tail end mirror 34 and the second tail end mirror 35 before end mirror 31, second；Before first before end mirror 31, second
End mirror 32, turning mirror 33, the first tail end mirror 34 and the second tail end mirror 35 constitute laser resonator；End mirror 31 and second before first
Preceding end mirror 32 is correspondingly arranged；Turning mirror 33 respectively with first before end mirror 31, the first tail end mirror 34 be correspondingly arranged；Second tail end mirror 35
End mirror 32 is correspondingly arranged before with second；End mirror 31 and second is arranged before first in first laser crystal 40, second laser crystal 50
Between preceding end mirror 32；Adjusting Q crystal 60 and the setting of frequency-doubling crystal 70 are intracavitary in laser resonance；Export the 532nm arteries and veins of low-repetition-frequency
When washing off, the first pump laser 11 exports 808nm 880nm pump light, the pump light of the first pump laser 11 output
First laser crystal 40 is focused on through the first focus pack 21, first laser crystal 40 realizes population after absorbing pump energy
Reversion, in the intracavitary generation 1064nm laser of laser resonance；The 1064nm laser transmission second generated by first laser crystal 40 swashs
Luminescent crystal 50；When exporting the 532nm pulsed light of high repetition frequency, the second pump laser 12 exports 808nm or 880nm pumping
The pump light of light, the output of the second pump laser 12 focuses on second laser crystal 50, second laser through the second focus pack 22
Crystal 50 realizes population inversion after absorbing pump energy, in the intracavitary generation 1064nm laser of laser resonance；By second laser
The 1064nm laser that crystal 50 generates transmits first laser crystal 40；Under the modulation of adjusting Q crystal 60, the intracavitary formation of laser resonance
1064nm pulsed light, when 1064nm pulsed light passes through frequency-doubling crystal 70, part 1064nm pulsed light is converted to 532nm pulsed light；
532nm pulse laser transmits turning mirror 33, is output to outside laser resonator.
By export low-repetition-frequency 532nm pulsed light when, by the first pump laser 11 export pump light, first
Laser crystal 40 generates 1064nm laser, defeated by the second pump laser 12 when exporting the 532nm pulsed light of high repetition frequency
Pump light out, second laser crystal 50 generate 1064nm laser, by first laser crystal 40 and second laser crystal 50 in energy
Difference on life time of the level, so as to switch single laser resonator between low-repetition-frequency output and high repetition frequency output
When, the 532nm pulse optical power of output keeps stablizing, so as to using the equipment of separate unit laser processing realize low-repetition-frequency and
High repetition frequency 532nm pulsed light stablizes output.
In a wherein embodiment, for realize first laser crystal 40 and 50 low-repetition-frequency of second laser crystal and
There is different upper level lifetimes, first laser crystal 40 is Nd:YAG, and second laser crystal 50 is Nd between high repetition frequency:
YVO4；Due to being had differences in life time of the level characteristic for Nd:YAG and Nd:YVO4；The upper level lifetime of Nd:YVO4 is short, about
90us-100us, Nd:YAG upper level lifetime are long, about 230us, and due to the difference of this characteristic, Nd:YVO4 (is greater than in high frequency
There is relatively good laser output under 40khz), Nd:YAG has relatively good laser output under low frequency (being less than 20kHZ), to make
Laser resonator when low-repetition-frequency exports and switches between high repetition frequency output, protect by the 532nm pulse optical power of output
It is fixed to keep steady.
Referring to Fig. 2, in Fig. 2, the mean power for the 532nm pulsed light that bicrystal green (light) laser 100 exports be P,
Pulse width is τ；In the present embodiment, it when activating second laser crystal 50 by the second pump laser 12, is exported
532nm pulsed light there is smaller pulsewidth, i.e., under same average power output, the operation of opposite first laser crystal 40 is imitated
Fruit, peak value of pulse are higher；If exporting 532nm pulsed light, 532nm pulse under low-repetition-frequency by second laser crystal 50
The power decline of light is serious, and when exporting 532nm pulsed light under low-repetition-frequency by first laser crystal 40, then it is able to maintain
Biggish pulse energy.
Further, since first laser crystal 40 is Nd:YAG, second laser crystal 50 is Nd:YVO4, and Nd:YAG
It is had differences on pulse width characteristic with Nd:YVO4, in the 532nm pulsed light for needing high-pulse widths, the first pumping swashs
Light device 11 starts, and the second pump laser 12 stops, Nd:YAG crystal active work, to export the 532nm of high-pulse widths
Pulsed light；When needing the 532nm pulsed light of low pulse width, the starting of the second pump laser 12, the first pump laser 11
Stop, Nd:YVO4 crystal active work, so that the 532nm pulsed light of low pulse width is exported, so as to add using separate unit laser
The equipment of work realizes that low pulse width and stablizing for high-pulse widths 532nm pulsed light export；In other embodiments, may be used also
To be, first laser crystal 40 is Nd:YVO4, and second laser crystal 50 is Nd:YAG.
In a wherein embodiment, pass through first laser crystal 40 or second laser crystal to reduce 1064nm laser
The two-sided plating 1064nm anti-reflection film of loss when 50 surface, first laser crystal 40 and second laser crystal 50, to reduce
The reflection of 1064nm laser.
In a wherein embodiment, pass through 50 table of first laser crystal 40 or second laser crystal to reduce pump light
The two-sided plating 808/880nm anti-reflection film of loss when face, first laser crystal 40 and second laser crystal 50, to improve first
The absorption of laser crystal 40 or second laser crystal 50 to pump light.
Referring to Fig. 1, in a wherein embodiment, it is double for the output mode for adjusting bicrystal green (light) laser 100
Crystal green (light) laser 100 further includes diaphragm 80, and diaphragm 80 is equipped with light hole, and light hole is in first laser crystal 40 and the
Between dual-laser crystal 50；When bicrystal green (light) laser 100 is run, the 1064nm laser for meeting transverse mode property requirements passes through
Light hole, so that bicrystal green (light) laser 100 be made to be in scheduled output mode；Further, since diaphragm 80 is arranged
Between first laser crystal 40 and second laser crystal 50, it can avoid second laser crystal 50 and receive the first pump laser 11
The pump light or first laser crystal 40 issued receives the pump light that the second pumping laser is issued, to avoid first
Laser crystal 40 activates simultaneously with second laser crystal 50, avoids the unnecessary consumption of pump light.
In a wherein embodiment, to make pump caused by the first pump laser 11 or the second pump laser 12
Pu light reliable transmission, bicrystal green (light) laser 100 further include optical fiber component, and optical fiber component includes the first transmission fiber 91 and the
Two transmission fibers 92；First pump laser 11 couples the first transmission fiber 91 and exports pump light, 12 coupling of the second pump laser
Close the second transmission fiber 92 output pump light.
In a wherein embodiment, for the output end for fixing the first transmission fiber 91, optical fiber component further includes and the
The first fixing piece 93 that one focus pack 21 is correspondingly arranged, the output end of the first transmission fiber 91 are fixed on the first fixing piece 93
On.
In a wherein embodiment, for the output end for fixing the second transmission fiber 92, optical fiber component further includes and the
The second fixing piece 94 that two focus packs 22 are correspondingly arranged, the output end of the second transmission fiber 92 are fixed on the second fixing piece 94
On.
In a wherein embodiment, for the aberration for reducing by the first focus pack 21, the first focus pack 21 includes the
One plano-convex lens 23 and the second plano-convex lens 24, the convex surface of the first plano-convex lens 23 are opposite with the convex surface of the second plano-convex lens 24；
Further, the loss for reduction pump light on the first focus pack 21, the first plano-convex lens 23 and the second plano-convex lens 24
Plate 808nm/880nm anti-reflection film；Specifically, the focus of the first focus pack 21 is in first laser crystal 40, and with first
40 end face of laser crystal is at 1-3mm.
In a wherein embodiment, for the aberration for reducing by the second focus pack 22, the second focus pack 22 includes the
Three plano-convex lens 25 and the 4th plano-convex lens 26, the convex surface of third plano-convex lens 25 are opposite with the convex surface of the 4th plano-convex lens 26；
Further, the loss for reduction pump light on the second focus pack 22, third plano-convex lens 25 and the 4th plano-convex lens 26
Plate 808nm/880nm anti-reflection film；Specifically, the focus of the second focus pack 22 is in second laser crystal 50, and with second
50 end face of laser crystal is at 1-3mm.
Specifically, the first pump laser 11 and the second pump laser 12 are semiconductor laser；Swash to improve first
The pump light that luminescent crystal 40 or second laser crystal 50 are absorbed into, or reduce the loss of 1064nm laser, end mirror 31 before first, the
The plating of end mirror 32 808nm/880nm is anti-reflection before two and 1064nm high-reflecting film, the first tail end mirror 34 and the second tail end mirror 35 plate 1064nm
High-reflecting film；Turning mirror 33 plates that 1064nm high is anti-and 532nm high transmittance film, to make 532nm pulsed light through all output of turning mirror 33
To outside laser resonator；Further, to improve 1064nm laser to the transfer efficiency of 532nm laser, frequency-doubling crystal 70 is reduced
Materials or volume, frequency-doubling crystal 70 be arranged between turning mirror 33 and the first tail end mirror 34, and set close to the first tail end mirror 34
It sets, 1064nm laser reflexes to the first tail end mirror 34 through turning mirror 33, when 1064nm laser passes through frequency-doubling crystal 70, part
1064nm laser is converted to 532nm laser, and part 532nm laser and remaining 1064nm laser are complete by the first tail end mirror 34
Reflection, again through frequency-doubling crystal 70, another part 1064nm laser is converted into 532nm laser；Finally all 532nm swash
Light is beaten on turning mirror 33 together with remaining 1064nm laser, and 532nm pulse light transmission turning mirror 33 is output to laser resonance
Outside chamber；1064nm laser continues reflection in laser resonator interior resonance；Specifically, frequency-doubling crystal 70 is LBO, KDP or KTP；?
In other embodiments, frequency-doubling crystal 70 and adjusting Q crystal 60 can also be successively set on the second tail end mirror 35 and the second front end
Between mirror 32.
In a kind of wherein embodiment, adjusting Q crystal 60 is arranged before second between end mirror 32 and the second tail end mirror 35；It adjusts
Q crystal 60 is acousto-optic Q crystal, electric light Q crystal or passive Q-adjusted crystal 60；Specifically, end mirror 32 is anti-by 1064nm laser before second
It is incident upon the second tail end mirror 35, then after the reflection of the second tail end mirror 35, along backtracking, under the modulation of adjusting Q crystal 60, laser
1064nm pulsed light is formed in resonant cavity；In present embodiment, by the multiple folding of laser resonator, space efficiency utilization is non-
Chang Gao, in a limited space in realize each optical device putting without any confusion, although compact, there is no interference dresses
With the case where, volume required for complete machine is greatly reduced during realization, so that laser more minimizes, is conducive to
Downstream application end integrates.
In the present embodiment, by export low-repetition-frequency 532nm pulsed light when, by the first pump laser rear pump
Pu light, first laser crystal generate 1064nm laser, when exporting the 532nm pulsed light of high repetition frequency, are swashed by the second pumping
Light device exports pump light, and second laser crystal generates 1064nm laser, by first laser crystal and second laser crystal in energy
Difference on life time of the level, so as to switch single laser resonator between low-repetition-frequency output and high repetition frequency output
When, the 532nm pulse optical power of output keeps stablizing, so as to using the equipment of separate unit laser processing realize low-repetition-frequency and
High repetition frequency 532nm pulsed light stablizes output.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of bicrystal green (light) laser, which is characterized in that including the first pump laser, the second pump laser and institute
State corresponding first focus pack of the first pump laser, the second focus pack corresponding with second pump laser, humorous
Shake component, first laser crystal, second laser crystal, adjusting Q crystal and frequency-doubling crystal；The resonant component includes the first front end
End mirror, turning mirror, the first tail end mirror and the second tail end mirror before mirror, second；End mirror, institute before end mirror, described second before described first
It states turning mirror, the first tail end mirror and the second tail end mirror and constitutes laser resonator；Before described first before end mirror and described second
End mirror is correspondingly arranged；The turning mirror respectively with described first before end mirror, the first tail end mirror be correspondingly arranged；Second tail
End mirror is correspondingly arranged before end mirror and described second；The first laser crystal, the second laser crystal are arranged described first
Before preceding end mirror and described second between end mirror；The adjusting Q crystal and frequency-doubling crystal setting are intracavitary in the laser resonance；It is defeated
Out when the 532nm pulsed light of low-repetition-frequency, first pump laser exports pump light, and first pump laser is defeated
Pump light out focuses on the first laser crystal through first focus pack, and the first laser crystal is in the laser
1064nm laser is generated in resonant cavity；It is brilliant that the second laser is transmitted by the 1064nm laser that the first laser crystal generates
Body；When exporting the 532nm pulsed light of high repetition frequency, second pump laser exports pump light, and second pumping swashs
The pump light of light device output focuses on the second laser crystal through second focus pack, and the second laser crystal is in institute
State the intracavitary generation 1064nm laser of laser resonance；The 1064nm laser transmission described first generated by the second laser crystal swashs
Luminescent crystal；Under the modulation of the adjusting Q crystal, the intracavitary formation 1064nm pulsed light of laser resonance, 1064nm pulsed light warp
When crossing the frequency-doubling crystal, part 1064nm pulsed light is converted to 532nm pulsed light；532nm pulse laser transmits the turnover
Mirror is output to outside the laser resonator.
2. bicrystal green (light) laser according to claim 1, which is characterized in that the first laser crystal is Nd:
YAG, the second laser crystal are Nd:YVO4.
3. bicrystal green (light) laser according to claim 2, which is characterized in that the first laser crystal and described
The two-sided plating 1064nm anti-reflection film of dual-laser crystal.
4. bicrystal green (light) laser according to claim 2, which is characterized in that the first laser crystal and described
The two-sided plating 808/880nm anti-reflection film of dual-laser crystal.
5. bicrystal green (light) laser according to claim 1, which is characterized in that further include diaphragm, set on the diaphragm
There is light hole, the light hole is between the first laser crystal and the second laser crystal.
6. bicrystal green (light) laser according to claim 1, which is characterized in that it further include optical fiber component, the optical fiber
Component includes the first transmission fiber and the second transmission fiber；First pump laser couples the first transmission fiber output
Pump light, second pump laser couple second transmission fiber and export pump light.
7. bicrystal green (light) laser according to claim 6, which is characterized in that the optical fiber component further include with it is described
The first fixing piece that first focus pack is correspondingly arranged, the output end of first transmission fiber are fixed on first fixing piece
On.
8. bicrystal green (light) laser according to claim 6, which is characterized in that the optical fiber component further include with it is described
The second fixing piece that second focus pack is correspondingly arranged, the output end of second transmission fiber are fixed on second fixing piece
On.
9. bicrystal green (light) laser according to claim 1, which is characterized in that first focus pack includes first
Plano-convex lens and the second plano-convex lens, the convex surface of first plano-convex lens are opposite with the convex surface of second plano-convex lens.
10. bicrystal green (light) laser according to claim 1, which is characterized in that second focus pack includes the
Three plano-convex lens and the 4th plano-convex lens, the convex surface of the third plano-convex lens are opposite with the convex surface of the 4th plano-convex lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821555690.7U CN208782230U (en) | 2018-09-21 | 2018-09-21 | Bicrystal green (light) laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821555690.7U CN208782230U (en) | 2018-09-21 | 2018-09-21 | Bicrystal green (light) laser |
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| Publication Number | Publication Date |
|---|---|
| CN208782230U true CN208782230U (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821555690.7U Withdrawn - After Issue CN208782230U (en) | 2018-09-21 | 2018-09-21 | Bicrystal green (light) laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963741A (en) * | 2018-09-21 | 2018-12-07 | 深圳市杰普特光电股份有限公司 | Bicrystal green (light) laser |
-
2018
- 2018-09-21 CN CN201821555690.7U patent/CN208782230U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963741A (en) * | 2018-09-21 | 2018-12-07 | 深圳市杰普特光电股份有限公司 | Bicrystal green (light) laser |
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Granted publication date: 20190423 Effective date of abandoning: 20191018 |