CN207572713U - Single pump both-end pumping green (light) laser - Google Patents
Single pump both-end pumping green (light) laser Download PDFInfo
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Abstract
A kind of single pump both-end pumping green (light) laser, including pumping source, collimation lens, semi-transparent semi-reflecting lens, the first total reflective mirror, the first condenser lens, the second total reflective mirror, third total reflective mirror, the second condenser lens, laser crystal, the first end mirror, the second end mirror, turning mirror, the first tail end mirror, the second tail end mirror, adjusting Q crystal, two frequency-doubling crystals, spectroscope and the 4th total reflective mirror；First end mirror, the second end mirror, turning mirror, the first tail end mirror and the second tail end mirror form resonator；Become parallel rays after the collimated lens of pump light that pumping source is sent out, then by semi-transparent semi-reflecting lens, part pump light reflects on semi-transparent semi-reflecting lens, and part pump light is transmitted through semi-transparent semi-reflecting lens.Single pump both-end pumping green (light) laser of the utility model from the both ends of laser crystal by injecting pump light, make under conditions of gross output requirement is constant, the single-ended heat caused by when absorbing pump light of laser crystal declines, and is conducive to the high power operation of 532nm green (light) lasers.
Description
Technical field
The utility model is related to laser technology, more particularly to a kind of single pump both-end pumping green (light) laser.
Background technology
Laser is one of great utility model in modern science technology, wherein, 532nm green lasers are applied to cold working
Field, the application value in nonmetallic and Precision Machining are especially prominent.As demand of the whole world to retrofit increasingly increases
Add so that the application field of green (light) laser constantly expands.Existing 532nm green (light) lasers often use the work of single end face pump
Make mode, however single end face pump is only capable of the application demand for meeting low-power, under the application of high average output power, single end face
Pumping often makes the laser crystal in laser often crack due to uneven heating after absorbing pump light, and 532nm green lights is caused to swash
Light device can not be in stable operation under high-output power.
Utility model content
Based on this, the utility model offer is a kind of using single pump both-end pumping, and it is defeated can to meet high power 532nm green lasers
Go out single pump both-end pumping green (light) laser of requirement.
In order to realize the purpose of this utility model, the utility model uses following technical scheme：
A kind of single pump both-end pumping green (light) laser, including pumping source, collimation lens, semi-transparent semi-reflecting lens, the first total reflective mirror,
First condenser lens, third total reflective mirror, the second condenser lens, laser crystal, the first end mirror, the second end mirror, turns the second total reflective mirror
Fold mirror, the first tail end mirror, the second tail end mirror, adjusting Q crystal, two frequency-doubling crystals, spectroscope and the 4th total reflective mirror；The pumping source
For sending out pump light；The pump light that the pumping source is sent out becomes parallel light after the collimation lens, then passes through
The semi-transparent semi-reflecting lens, a part of pump light reflect on the semi-transparent semi-reflecting lens, and another part pump light is transmitted through institute
State semi-transparent semi-reflecting lens；First end mirror, second end mirror, the turning mirror, the first tail end mirror and second tail
End mirror forms resonator；The laser crystal is equipped with the first incidence end and the second incidence end；It is first condenser lens, described
Laser crystal and second condenser lens are between first total reflective mirror and the third total reflective mirror；The first end
For mirror between first condenser lens and the laser crystal, second end mirror is located at second condenser lens and institute
It states between laser crystal；The turning mirror is oppositely arranged with first end mirror；The adjusting Q crystal, two frequency-doubling crystal, institute
Spectroscope is stated between second end mirror and the second tail end mirror；The pumping reflected on the semi-transparent semi-reflecting lens
Light, it is parallel after first total reflective mirror reflection to enter first condenser lens, the pump that first total reflective mirror reflects
Pu light is focused on by first condenser lens, and from the incident laser crystal of first incidence end；Transmitted through described half
The pump light of saturating semi-reflective mirror is reflected successively by second total reflective mirror, the third total reflective mirror, and the third total reflective mirror reflects
Pump light focused on by second condenser lens, and from the incident laser crystal of second incidence end；Pump light from
After the incident laser crystal in both ends, the continuous light of 1064nm fundamental frequencies is generated in resonator；It is adjusted, obtained by the adjusting Q crystal
To the 1064nm pulsed lights of the roundtrip in the resonator；Along the turning mirror to the direction of the first tail end mirror,
1064nm pulsed lights are after the first tail end mirror reflection along backtracking；Along second end mirror to the second tail end mirror
Direction, 1064nm pulsed lights are injected after the adjusting Q crystal and the spectroscope in two frequency-doubling crystal, generate frequency multiplication
Effect, part 1064nm pulsed lights are converted into the green light of 532nm, the 532nm green lights converted and remaining 1064nm pulses
Light is reflected by the second tail end mirror, and again through two frequency-doubling crystal, and some 1064nm pulsed light converts
Green light for 532nm；532nm green lights obtained by all conversions pass through the light splitting together with remaining 1064nm pulsed lights
Mirror, spectroscope reflection 532nm green lights, transmission 1063nm pulsed lights, 1064nm pulsed lights are transmitted through edge after the spectroscope
Backtracking；532nm laser is reflected by the spectroscope on the 4th total reflective mirror, then after the 4th total reflective mirror reflection
Output.
Single pump both-end pumping green (light) laser of the utility model is made by injecting pump light from the both ends of laser crystal
Under conditions of gross output requirement is constant, laser crystal single-ended heat decline, pump light caused by when absorbing pump light
The heat generated on laser crystal is uniformly distributed in laser crystal both sides, avoids laser crystal cracking due to single-ended be heated
Problem is conducive to the high power operation of 532nm green (light) lasers.
The semi-transparent semi-reflecting lens reflect 50% pump light, 50% pump light of transmission in one of the embodiments,.
In one of the embodiments, first condenser lens by pump light focus in the laser crystal and with institute
The first incidence end is stated at 1~2mm, second condenser lens by pump light focus in the laser crystal and with it is described
Second incidence end is at 1~2mm.
The collimation lens is planoconvex spotlight in one of the embodiments, and the semi-transparent semi-reflecting lens and the collimation are saturating
The convex surface of mirror is oppositely arranged and is tilted relative to the plane of the collimation lens.
First total reflective mirror, second total reflective mirror and the third total reflective mirror are in one of the embodiments,
Eyeglass anti-808nm or 880nm high.
First end mirror, second end mirror are 808nm or 880nm is anti-reflection, 1064nm in one of the embodiments,
High anti-eyeglass；The first tail end mirror eyeglass anti-for 1064nm high；The second tail end mirror is anti-for 1064nm and 532nm high
Eyeglass；The turning mirror eyeglass anti-for 1064nm high.
The adjusting Q crystal is acousto-optic Q crystal or electric light Q crystal in one of the embodiments,.
The laser crystal is Nd in one of the embodiments,:YVO4、Nd:YAG、Nd:YLF or Nd:GVO4.
Two frequency-doubling crystal is lithium triborate crystal, potassium titanyl oxygenic phosphate(KTP) crystal, di(2-ethylhexyl)phosphate in one of the embodiments,
Hydrogen potassium crystal or BBO Crystal.
The frequency tripling crystal is lithium triborate crystal or BBO Crystal in one of the embodiments,.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of single pump both-end pumping green (light) laser of a preferred embodiment of the utility model.
Specific embodiment
For the ease of understanding the utility model, the utility model will be described more fully below.But this practicality
It is novel to realize in many different forms, however it is not limited to embodiment described herein.On the contrary, provide these implementations
The purpose of example is to make the more thorough and comprehensive of the understanding to the disclosure of the utility model.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model
The normally understood meaning of technical staff in domain is identical.It is only in the term used in the description of the utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.
Referring to Fig. 1, single pump both-end pumping green (light) laser 100 for one better embodiment of the utility model, is used for
Generate 532nm green lasers.Singly pump both-end pumping green (light) laser 100 includes pumping source 10, collimation lens 11, semi-transparent semi-reflecting for this
Mirror 12, the first condenser lens 14, the second total reflective mirror 15, third total reflective mirror 16, the second condenser lens 17, swashs at first total reflective mirror 13
Luminescent crystal 20, the first end mirror 21, the second end mirror 22, turning mirror 23, the first tail end mirror 24, the second tail end mirror 25, adjusting Q crystal 26,
Two frequency-doubling crystals 27,28 and the 4th total reflective mirror 29 of spectroscope.
For pumping source 10 for sending out pump light, pumping source 10 can be the pump module for sending out 808nm pump lights, can also
It is the pump laser module for sending out 880nm pump lights.In the present embodiment, pumping source 10 is to send out 808nm pump lights
Pump laser module.
Collimation lens 11 is planoconvex spotlight, and semi-transparent semi-reflecting lens 12 are located between 11 and second total reflective mirror 15 of collimation lens, half
The convex surface of saturating semi-reflective mirror 12 and collimation lens 11 is oppositely arranged and is tilted relative to the plane of collimation lens 11.
Semi-transparent semi-reflecting lens 12 have 50% pump light of reflection, the characteristic for transmiting 50% pump light；The pump that pumping source 10 is sent out
Become parallel light after the collimated lens 11 of Pu light, parallel light passes through semi-transparent semi-reflecting lens 12, and a part of pump light is half
It is reflected on saturating semi-reflective mirror 12, another part pumping light transmission semi-transparent semi-reflecting lens 12.
Laser crystal 20 is equipped with the first incidence end and the second incidence end, and the first incidence end and the second incidence end are respectively to swash
The both ends of luminescent crystal 20；Semi-transparent semi-reflecting lens 12 are opposite with the first total reflective mirror 13 close to the one side of collimation lens 11；First focuses on thoroughly
Mirror 14,20 and second condenser lens 17 of laser crystal are between the first total reflective mirror 13 and third total reflective mirror 16.
The pump light reflected on semi-transparent semi-reflecting lens 12, it is parallel after the reflection of the first total reflective mirror 13 to enter the first focusing
Lens 14, the pump light that the first total reflective mirror 13 reflects is focused on by the first condenser lens 14, and is swashed from the first incidence end incidence
Luminescent crystal 20.
Pump light transmitted through semi-transparent semi-reflecting lens 12 is reflected successively by the second total reflective mirror 15, third total reflective mirror 16, and third is complete
The pump light that anti-mirror 16 reflects is focused on by the second condenser lens 17, and from the second incidence end incident laser crystal 20；It is preferred that
Ground to cause pump light can be preferably Chong Die with light path in resonator in laser crystal 20, improves transfer efficiency, first focuses on
Lens 14 focus on pump light in laser crystal 20 and with the first incidence end at 1~2mm, and the second condenser lens 17 will pump
Pu light is focused in laser crystal 20 and with the second incidence end at 1~2mm.
Specifically, the first total reflective mirror 13, the second total reflective mirror 15 and third total reflective mirror 16 mirror anti-for 808nm or 880nm high
Piece；Laser crystal 20 is Nd:YVO4、Nd:YAG、Nd:YLF or Nd:GVO4 crystal.
Between the first condenser lens 14 and laser crystal 20, the second end mirror 22 is located at second and focuses on thoroughly first end mirror 21
Between mirror 17 and laser crystal 20；First end mirror 21, the second end mirror 22, turning mirror 23, the first tail end mirror 24 and the second tail end mirror
25 form resonator；Laser crystal 20 is located in resonator, and specifically, laser crystal 20 is located at the first end mirror 21 and the second end mirror
Between 22；First incidence end of the first end mirror 21 and laser crystal 20 is oppositely arranged and inclines relative to the axis of laser crystal 20
Tiltedly, the second incidence end of the second end mirror 22 and laser crystal 20 is oppositely arranged and is tilted relative to the axis of laser crystal 20；Turn
Fold mirror 23 is oppositely arranged with the first end mirror 21；Adjusting Q crystal 26, two frequency-doubling crystals 27, spectroscope 28 are located at the second end mirror 22 and
It is set in light path between two tail end mirrors 25 and close to the second tail end mirror 25, two frequency-doubling crystals 27 are located at the second tail end mirror 25 with dividing
Between light microscopic 28, spectroscope 28 is between two frequency-doubling crystals 27 and adjusting Q crystal 26 and the axis of opposite two frequency-doubling crystals 27 inclines
Tiltedly setting.
Specifically, the first end mirror 21, the second end mirror 22 are the eyeglass that 808nm or 880nm is anti-reflection, 1064nm high is anti-, therefore the
One end mirror 21, the second end mirror 22 all have anti-reflection effect for 808nm or 880nm pump lights, have height to 1064nm pulsed lights
Reflex；First tail end mirror 24 eyeglass anti-for 1064nm high, therefore, the first tail end mirror 24 has 1064nm pulsed lights
High reflection acts on；Second tail end mirror 25 eyeglass anti-for 1064nm and 532nm high, therefore, the second tail end mirror 25 is for 1064nm
Pulsed light and 532nm green lights all have high reflection effect；The eyeglass anti-for 1064nm high of turning mirror 23；Adjusting Q crystal 26 is acousto-optic Q
Crystal or electric light Q crystal；Spectroscope 28 is 532nm full-reverse lens；Two frequency-doubling crystals 27 are LBO (lithium triborate crystal), KTP
(potassium titanyl oxygenic phosphate(KTP) crystal), KDP (potassium dihydrogen phosphate crystal) or BBO (BBO Crystal)；4th total reflective mirror 29 is 532nm
It is totally reflected eyeglass.
The pump light line focus of 808nm or 880nm is incident in laser crystal 20, and both-end face-pumping is generated to laser crystal 20
Pu, laser crystal 20 absorb energy and realize particle reversion, and the continuous light of 1064nm fundamental frequencies is generated in resonator；Pass through adjusting Q crystal
The Q values of 26 pairs of resonators are adjusted, and switch light path break-make, obtain the 1064nm pulsed lights of the roundtrip in resonator.
Along the direction of second the 22 to the second tail end of end mirror mirror 25,1064nm pulsed lights after adjusting Q crystal 26 and spectroscope 28,
It injects in two frequency-doubling crystals 27, when 1064nm pulsed lights pass through two frequency-doubling crystals 27, generates frequency-doubled effect, part 1064nm pulses
Light is converted into the green light of 532nm, and the 532nm green lights and remaining 1064nm pulsed lights converted is anti-by the second tail end mirror 25
It penetrates, again through two frequency-doubling crystals 27, and some 1064nm pulsed light is converted into the green light of 532nm；Thereafter, it is all
The 532nm green lights for converting gained pass through spectroscope 28 together with remaining 1064nm pulsed lights, and it is green that spectroscope 28 reflects 532nm
Light, transmission 1063nm pulsed lights, 1064nm pulsed lights are transmitted through along backtracking, continuing the work in resonator after spectroscope 28
Make；532nm laser (L1 in the figure) mirror 28 that is split is reflected on the 4th total reflective mirror 29, then after the reflection of the 4th total reflective mirror 29 it is defeated
Go out.
Since the remaining 1064nm pulsed lights reflected through the first tail end mirror 24 again pass by two frequency-doubling crystals 27, improve
1064nm pulsed lights, thus under the conditions of Same Efficieney, can reduce the use of two frequency-doubling crystals 27 to the conversion ratio of 532nm green lights
Material, effectively save materials cost.
Along the direction of the 23 to the first tail end of turning mirror mirror 24,1064nm pulsed lights are through the first tail end mirror 24 reflection Hou Yanyuan roads
It returns, continues to work in resonator.
In this practicality example, due to resonator by the first end mirror 21, the second end mirror 22, turning mirror 23, the first tail end mirror 24 and
Second tail end mirror 25 is formed, and turning mirror 23 is oppositely arranged with the first end mirror 21, between the first end mirror 21 and the first tail end mirror 24
Light path transferred by turning mirror 23, reduce the occupied space of resonator, so as to be more advantageous to realize laser it is small-sized
Change.
In this practicality example, due to respectively from the incidence of the both ends of laser crystal 20, making pump light in gross output requirement
Under conditions of constant, the single-ended heat caused by when absorbing pump light of laser crystal 20 declines, and pump light is in laser crystal 20
The heat of upper generation is uniformly distributed in 20 both sides of laser crystal, avoids the problem of laser crystal 20 cracks due to single-ended be heated,
Be conducive to the high power operation of laser.
Further, to ensure respectively from intensity, the consistent wavelength of two strands of pump lights of the both ends of laser crystal 20 incidence,
So as to ensure that the even heat of 20 both sides of laser crystal is distributed, in this practicality example, semi-transparent semi-reflecting lens 12, the first total reflective mirror are utilized
13rd, single beam pump light that the second total reflective mirror 15 and third total reflective mirror 16 will be sent out by single pumping source 10, is adjusted to two strands never
Enter the pump light of laser crystal 20 with end-fire, make the consistent wavelength of the pump light from both ends incident laser crystal 20, in addition, due to
Semi-transparent semi-reflecting lens 12 reflect 50% part after the pump light collimation that same pumping source 10 is sent out, and transmit same 10 institute of pumping source
50% part after the pump light collimation sent out ensures the intensity one of two strands of pump lights from the incidence of the both ends of laser crystal 20
It causes, makes the heat that crystal both ends are subject to consistent；Since the pump light from both ends incident laser crystal 20 comes from same pumping source 10,
After singly pump both-end pumping green (light) laser 100 is used for a long time, from the attenuation degree of the pump light of both ends incident laser crystal 20
Unanimously, so as to which resonator after being used for a long time be avoided to lack of proper care when both ends pump light is inconsistent, ensure laser normally export and
The service life of single pump both-end pumping green (light) laser 100 is extended, enables single pump both-end pumping green (light) laser 100 in high power
Output is lower to stablize permanent operation.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that the common skill for 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 scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of single pump both-end pumping green (light) laser, which is characterized in that including pumping source, collimation lens, semi-transparent semi-reflecting lens, the
One total reflective mirror, the first condenser lens, the second total reflective mirror, third total reflective mirror, the second condenser lens, laser crystal, the first end mirror,
Two end mirrors, turning mirror, the first tail end mirror, the second tail end mirror, adjusting Q crystal, two frequency-doubling crystals, spectroscope and the 4th total reflective mirror；Institute
Pumping source is stated for sending out pump light；The pump light that the pumping source is sent out becomes parallel light after the collimation lens,
Then by the semi-transparent semi-reflecting lens, a part of pump light reflects on the semi-transparent semi-reflecting lens, another part pump light
Transmitted through the semi-transparent semi-reflecting lens；First end mirror, second end mirror, the turning mirror, the first tail end mirror and institute
It states the second tail end mirror and forms resonator；The laser crystal is equipped with the first incidence end and the second incidence end；Described first focuses on thoroughly
Mirror, the laser crystal and second condenser lens are between first total reflective mirror and the third total reflective mirror；It is described
Between first condenser lens and the laser crystal, second end mirror is located at described second and focuses on thoroughly first end mirror
Between mirror and the laser crystal；The turning mirror is oppositely arranged with first end mirror；The adjusting Q crystal, two frequency multiplication
Crystal, the spectroscope are between second end mirror and the second tail end mirror；It is reflected on the semi-transparent semi-reflecting lens
Pump light, it is parallel after first total reflective mirror reflection to enter first condenser lens, first total reflective mirror reflection
The pump light gone out is focused on by first condenser lens, and from the incident laser crystal of first incidence end；Transmitted through
The pump light of the semi-transparent semi-reflecting lens is reflected successively by second total reflective mirror, the third total reflective mirror, the third total reflective mirror
The pump light reflected is focused on by second condenser lens, and from the incident laser crystal of second incidence end；Pump
Pu light generates the continuous light of 1064nm fundamental frequencies after the incident laser crystal in both ends in resonator；Pass through the adjusting Q crystal tune
Section, obtains the 1064nm pulsed lights of the roundtrip in the resonator；Along the turning mirror to the side of the first tail end mirror
To 1064nm pulsed lights are after the reflection of the first tail end mirror along backtracking；Along second end mirror to the second tail end mirror
Direction, 1064nm pulsed lights are injected after the adjusting Q crystal and the spectroscope in two frequency-doubling crystal, generate frequency multiplication
Effect, part 1064nm pulsed lights are converted into the green light of 532nm, the 532nm green lights converted and remaining 1064nm pulses
Light is reflected by the second tail end mirror, and again through two frequency-doubling crystal, and some 1064nm pulsed light converts
Green light for 532nm；532nm green lights obtained by all conversions pass through the light splitting together with remaining 1064nm pulsed lights
Mirror, spectroscope reflection 532nm green lights, transmission 1063nm pulsed lights, 1064nm pulsed lights are transmitted through edge after the spectroscope
Backtracking；532nm laser is reflected by the spectroscope on the 4th total reflective mirror, then after the 4th total reflective mirror reflection
Output.
2. single pump both-end pumping green (light) laser according to claim 1, which is characterized in that the semi-transparent semi-reflecting lens reflection
50% pump light, 50% pump light of transmission.
3. single pump both-end pumping green (light) laser according to claim 2, which is characterized in that first condenser lens will
Pump light is focused in the laser crystal and with first incidence end at 1~2mm, and second condenser lens will pump
Pu light is focused in the laser crystal and with second incidence end at 1~2mm.
4. single pump both-end pumping green (light) laser according to claim 1, which is characterized in that the collimation lens is plano-convex
The convex surface of lens, the semi-transparent semi-reflecting lens and the collimation lens is oppositely arranged and inclines relative to the plane of the collimation lens
Tiltedly.
5. single pump both-end pumping green (light) laser according to claim 1, which is characterized in that first total reflective mirror, institute
State the second total reflective mirror and the third total reflective mirror eyeglass anti-for 808nm or 880nm high.
6. single pump both-end pumping green (light) laser according to claim 5, which is characterized in that first end mirror, described
Second end mirror is the eyeglass that 808nm or 880nm is anti-reflection, 1064nm high is anti-；The first tail end mirror eyeglass anti-for 1064nm high；
The second tail end mirror eyeglass anti-for 1064nm and 532nm high；The turning mirror eyeglass anti-for 1064nm high.
7. single pump both-end pumping green (light) laser according to claim 1, which is characterized in that the adjusting Q crystal is acousto-optic Q
Crystal or electric light Q crystal.
8. single pump both-end pumping green (light) laser according to claim 1, which is characterized in that the laser crystal is Nd:
YVO4、Nd:YAG、Nd:YLF or Nd:GVO4.
9. single pump both-end pumping green (light) laser according to claim 1, which is characterized in that two frequency-doubling crystal is three
Lithium tetraborate crystal, potassium titanyl oxygenic phosphate(KTP) crystal, potassium dihydrogen phosphate crystal or BBO Crystal.
10. single pump both-end pumping green (light) laser according to claim 1, which is characterized in that the 4th total reflective mirror is
532nm is totally reflected eyeglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721598205.XU CN207572713U (en) | 2017-11-24 | 2017-11-24 | Single pump both-end pumping green (light) laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721598205.XU CN207572713U (en) | 2017-11-24 | 2017-11-24 | Single pump both-end pumping green (light) laser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107742819A (en) * | 2017-11-24 | 2018-02-27 | 深圳市杰普特光电股份有限公司 | Single pump both-end pumping green (light) laser |
| 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 |
-
2017
- 2017-11-24 CN CN201721598205.XU patent/CN207572713U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107742819A (en) * | 2017-11-24 | 2018-02-27 | 深圳市杰普特光电股份有限公司 | Single pump both-end pumping green (light) laser |
| 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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