CN207896411U - A kind of high repetitive frequency pulsed pumping electrooptics Q-switched laser - Google Patents
A kind of high repetitive frequency pulsed pumping electrooptics Q-switched laser Download PDFInfo
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- CN207896411U CN207896411U CN201721841846.3U CN201721841846U CN207896411U CN 207896411 U CN207896411 U CN 207896411U CN 201721841846 U CN201721841846 U CN 201721841846U CN 207896411 U CN207896411 U CN 207896411U
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- 238000005086 pumping Methods 0.000 title claims abstract description 24
- 230000003252 repetitive effect Effects 0.000 title claims description 4
- 230000010287 polarization Effects 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000000498 cooling water Substances 0.000 claims abstract description 15
- 238000002310 reflectometry Methods 0.000 claims abstract description 5
- 238000005057 refrigeration Methods 0.000 claims abstract description 5
- 238000002834 transmittance Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000001615 p wave Methods 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims 1
- 229910052724 xenon Inorganic materials 0.000 abstract description 4
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004065 semiconductor Substances 0.000 description 10
- 239000013078 crystal Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910009372 YVO4 Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010330 laser marking Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
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- Lasers (AREA)
Abstract
The utility model is related to a kind of quasi-continuous profile pump pulsed electro-optical Q-switching lasers of high repetition frequency, it is characterised in that：Full-reverse lens are coated with the total reflection film of the wavelength, and reflecting optics are flat mirror or the eyeglass with curvature；Electro-optical Q-switch is carried out electric-optically Q-switched by the way of moving back pressure；Side pump module A and side pump module B is pumped using quasi-continuous profile pump mode, is connected with cooling water refrigeration；Operation material is clamped in be rodlike in side pump module A and side pump module B, is connected with cooling water and takes away heat；Polarization apparatus wavelength is 1064nm, and both-end is coated with high transmittance film, is placed among side pump module A and side pump module B；Laser output mirror is coated with 1064nm partial reflectance films, reflectivity 10%；It pumps Nd with side ALT pulse3+:YAG working-laser materials, and compensated by 90 ° of polarization apparatus, then pass through electric-optically Q-switched tune Q modes, 1064nm pulse laser of the acquisition repetition rate in KHz or more；Suitable for the electro-optical Q-switching laser of xenon flash lamp pumping, is obtaining larger single pulse energy simultaneously, the repetition rate of laser works is substantially improved.
Description
Technical field
The utility model is related to a kind of high repetition frequency profile pump pulsed electro-optical Q-switching lasers, with Nd3+:YAG conducts
Operation material carries out ALT pulse pumping by two pump modules, then obtains repetition rate by electric-optically Q-switched mode and exist
The 1064nm pulse lasers of KHz or more, belong to all solid state laser technical field.
Background technology
Possess the 1064nm pulse lasers of high repetition frequency, peak power density in material processing, laser marking, laser
Ranging, photoelectronic warfare experiment etc. have wide application.Especially pumped using luminescent semiconductor diode as pumping source
Pu Nd3+:The technology that YAG crystal obtains 1064nm pulse lasers is the most ripe.The master of high repeat frequency pulsed laser is obtained at present
Mode is wanted to have：
1) pumped at end face of semiconductor Q-switched laser：
Pumped at end face of semiconductor refer to the pump light that sends out of semiconductor array after a series of condenser lens from crystal
Surface feeding sputtering to crystal in, the incident direction of pump light is consistent with the orientation of oscillation of laser.Pumped at end face of semiconductor Nd3+:YAG
Or Nd3+:YVO4Tune Q is carried out after operation material again, can obtain repetition rate KHz or more pulse laser.End pumping
Mode possess higher smooth light conversion efficiency, but since operation material face area is limited, it is difficult to input larger pumping work(
Rate.Crystal end-face converges the pump light of higher-wattage, is influenced by lens lesion threshold value, it is also difficult to carry out the pump of relatively high power
Pu.Excessively high power injection, it will make crystal generate very strong thermal lens, influence the beam quality for exporting laser.So end face
The mode of pumping is often applied in the solid state laser of smaller single pulse energy.
2) semiconductor side continuously pumps acousto-optic Q modulation laser：
Semiconductor side pumped refers to the pump that the pump light that semiconductor array is sent out enters crystal from the side of operation material
Pu mode, the direction of pump light are vertical with the direction of laser generation.Since the lateral area of operation material is larger, it is convenient for cooling water band
Heat is walked, higher pump power can also be injected.Pump light is modulated, then by way of acousto-optic Q modulation, can be obtained
Pulse laser of the complex frequency in KHz or more.But since continuous pump mode pumping peak power is relatively low, and acousto-optic Q modulation output swashs
The pulse width of light is again in musec order.So output laser have higher repetition rate, lower single pulse energy, compared with
Low peak power density.
3) semiconductor side quasi-cw pumping electro-optical Q-switching laser：
Using the quasi-continuous profile pump of semiconductor, the pump light peak power density of this mode is higher, can obtain list
Pulse energy is in tens the millijoules even pulse laser of hundreds of millijoules；It can be wide by the pulse of laser by electric-optically Q-switched mode
Degree is compressed to 10ns or so.The laser peak power density that this mode obtains is higher, but since quasi-continuous Bar items are centainly accounted for
Sky is than limitation, it is difficult to carry out the pulse pump of higher repetitive frequency.Again due to when high repetition frequency pumps, operation material by
The pump light of higher-wattage irradiates, and will produce very serious thermally induced birefringence, thermal lens phenomenon, to influence to export the light of laser
Beam quality.
Invention content
The purpose of this utility model is to provide a kind of quasi-continuous profile pump electro-optical Q-switching lasers of high repetition frequency, especially
It is to be related to one kind with Nd3+:YAG carries out ALT pulse pumping as operation material, by multiple pump modules, then passes through electric light
Adjust Q acquisition repetition rates in the 1064nm pulse lasers of KHz or more；It is electric-optically Q-switched for the existing big energy of 1064nm pulses
The shortcomings of laser repetition rate is low, thermally induced birefringence phenomenon is serious pumps Nd with side ALT pulse3+:YAG laser work objects
Matter, and compensated by 90 ° of polarization apparatus, then by electric-optically Q-switched tune Q modes, repetition rate is obtained KHz's or more
1064nm pulse lasers；Suitable for the electro-optical Q-switching laser of xenon flash lamp pumping, larger single pulse energy is being obtained simultaneously,
The repetition rate of laser works is substantially improved.
What the technical solution of the utility model was realized in：A kind of quasi-continuous profile pump pulsed electricity of high repetition frequency
Light Q-switched laser, including total reflective mirror, Full-reflection mirror seat, electro-optical Q-switch, electro-optical Q-switch pedestal, polarization splitting prism, polarization spectro
Prism table, side pump module A, working-laser material A, polarization apparatus, polarization apparatus seat, side pump module B, working-laser material B, laser are defeated
Appearance, laser output mirror seat, laser enclosure；Wherein total reflective mirror is fixed in the Full-reflection mirror seat of steel；Electro-optical Q-switch is fixed on
In ceramic electro-optical Q-switch pedestal；Polarization splitting prism is fixed in steel polarization splitting prism seat；Working-laser material A laser
Operation material B is separately mounted in side pump module A side pump modules B, and is connected with cooling water；Polarization apparatus is fixed on steel polarization apparatus seat
In；Laser output mirror is fixed in steel laser output mirror seat；Total reflective mirror tablet seat electro-optical Q-switch pedestal polarization splitting prism seat side
Pump module A side pump module B laser output mirror seats are fixed in aluminum laser enclosure；It is characterized in that：Full-reverse lens are coated with this
The total reflection film of wavelength, reflecting optics are flat mirror or the eyeglass with curvature；Electro-optical Q-switch carries out electric light by the way of moving back pressure
Adjust Q；The transmissivity that polarization splitting prism is more than the transmitance of p waves in 99%, s waves is less than 1%；Side pump module A and side pump module B
It is pumped using quasi-continuous profile pump mode, is connected with cooling water refrigeration；Operation material be it is rodlike be clamped in side pump module A and
In side pump module B, it is connected with cooling water and takes away heat；Polarization apparatus wavelength is 1064nm, and both-end is coated with high transmittance film, can be by linearly polarized light
Polarization direction be rotated by 90 °, be placed among side pump module A and side pump module B；Laser output mirror is coated with 1064nm partial reflectances
Film, reflectivity 10%；When laser works normally, two pump modules, that is, side pump module A and side pump module B are according to same frequency
Rate alternately pumps, and constitutes resonant cavity with total reflective mirror and laser output mirror, forms laser generation；Side pump module A and side pump module B pumps
The delay time at Pu is the half that individual module pumps the intermittent time；It is side pump module A and side pump module B two to adjust the frequency of Q
The sum of pump module working frequency adjusts Q signal and pump signal to have the constant time lag time.
The good effect of the utility model is：It is alternately pumped by multiple pump modules, reduces the work frequency of each module
Rate avoids influencing the pump power injection of laser because Bar items are limited by certain duty ratio or realizing higher work
Frequency.Thermotropic pair of two crystal bars generations can be effectively compensated for by 90 ° of polarization apparatus being inserted between two pump modules
Refraction effect finally realizes the pulse laser output of high repetition frequency, high single pulse energy；This mode can also be applied to xenon
In the Q-switched laser of lamp pumping, the repetition rate of xenon flash lamp pumping laser is promoted；The mode for selecting quasi-continuous profile pump, can
To obtain the pumping injection of high peak power, the laser of larger single pulse energy is exported；Multiple pulse modules alternately pump, and subtract
The repetition rate of small each module work so that the service life of Bar items to being substantially improved；The alternately mode of pumping, makes
Operation material will not inject excessively high pump light within the unit interval, avoid generating more serious thermally induced birefringence and thermal lens
Phenomenon；90 degree of polarization apparatus are inserted among two operation materials, the thermally induced birefringence of generation is compensated, can be obtained preferably
The pulse laser of beam quality；The pulse width for exporting laser is compressed to nanosecond order, is substantially improved by electric-optically Q-switched mode
The peak power density of laser.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the circuit control time diagram of the utility model.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings：As shown in Figure 1, a kind of quasi-continuous side of high repetition frequency
Face-pumping pulsed electro-optical Q-switching laser, including total reflective mirror 1, Full-reflection mirror seat 2, electro-optical Q-switch 3, electro-optical Q-switch pedestal 4, partially
Shake Amici prism 5, polarization splitting prism seat 6, side pump module A 7, working-laser material A8, polarization apparatus 9, polarization apparatus seat 10, side
Pump module B 11, working-laser material B 12, laser output mirror 13, laser output mirror seat 14, laser enclosure 15；Wherein it is all-trans
Mirror 1 is fixed in the Full-reflection mirror seat 2 of steel；Electro-optical Q-switch 3 is fixed in ceramic electro-optical Q-switch pedestal 4；Polarization splitting prism 5
It is fixed in steel polarization splitting prism seat 6；8 working-laser material B12 of working-laser material A are separately mounted to side pump module A
In 7 side pump module B 11, and it is connected with cooling water；Polarization apparatus 9 is fixed in steel polarization apparatus seat 10；Laser output mirror 13 is fixed on
In steel laser output mirror seat 14；2 electro-optical Q-switch pedestal of total reflective mirror tablet seat, 4 polarization splitting prism seat, 6 sides side pump module A7 pump mould
Block B11 laser output mirrors seat 14 is fixed in aluminum laser enclosure 15；It is characterized in that：Full-reverse lens are coated with the complete of the wavelength
Reflectance coating, reflecting optics are flat mirror or the eyeglass with curvature；Electro-optical Q-switch is carried out electric-optically Q-switched by the way of moving back pressure；Partially
The transmissivity that light splitting 5 mirror of rib that shakes is more than the transmitance of p waves in 99%, s waves is less than 1%；Side pump module A 7 and side pump module B 11 are adopted
It is pumped with quasi-continuous profile pump mode, is connected with cooling water refrigeration；Operation material is clamped in 7 Hes of side pump module A to be rodlike
In side pump module B 11, it is connected with cooling water and takes away heat；9 wavelength of polarization apparatus is 1064nm, and both-end is coated with high transmittance film, can be inclined by line
The shake polarization direction of light is rotated by 90 °, and is placed among side pump module A 7 and side pump module B 11；Laser output mirror 13 is coated with
1064nm partial reflectance films, reflectivity 10%；When laser works normally, two pump modules, that is, side pump module A 7 and side
Pump module B 11 is alternately pumped according to identical frequency, and resonant cavity is constituted with total reflective mirror 1 and laser output mirror 13, is formed laser and is shaken
It swings；The delay time that side pump module A 7 and side pump module B 11 is pumped is the half that individual module pumps the intermittent time；Adjust Q's
Frequency is the sum of 11 two pump module working frequencies of side pump module A 7 and side pump module B, adjusts Q signal and pump signal to have solid
Determine delay time.
8 working-laser material B 12 of working-laser material A are separately mounted in 7 side pump module B 11 of side pump module A,
And it is connected with cooling water, the pump light of laser module transmitting 808nm pumps operation material, and pump module uses quasi-continuous side
Face-pumping mode is pumped, and cooling water refrigeration is connected with；Operation material is rodlike Nd3+:YAG is clamped in side pump module, leads to
There is cooling water；Full-reverse lens 1 are fixed in the total reflective mirror tablet seat 2 of steel, and full-reverse lens are coated with the total reflection film of the wavelength, reflection
Eyeglass or for flat mirror or carry curvature, with laser output mirror 13 constitute resonant cavity；Electro-optical Q-switch 3 is fixed on ceramic electro-optical Q-switch
In pedestal 4, carried out by the way of moving back pressure it is electric-optically Q-switched, for control cavity loss and laser output；Polarization splitting prism 5 is solid
It is scheduled in steel polarization splitting prism seat 6；Polarization apparatus 9 is fixed in steel polarization apparatus seat 10, designed central wavelength 1064nm,
Both-end is coated with anti-reflection film, is placed on two pump module centre positions；Laser output mirror 13 is fixed in steel laser output mirror seat 14,
It is coated with 1064nm partial reflectance films, reflectivity 10%；2 electro-optical Q-switch pedestal of total reflective mirror tablet seat, 4 polarization splitting prism seat, 6 side
7 side pump module of pump module, 11 laser output mirror seat 14 is fixed in aluminum laser enclosure 15.
As shown in Fig. 2, laser at work pump module with adjust Q module sequential relationship.When laser works normally,
Two pumping moulds are alternately pumped according to identical working frequency, and the delay time of two modules pumping is, with total reflective mirror and outgoing mirror
Resonant cavity is constituted, laser generation is formed.Electro-optical Q-switch carries out tune Q by the way of moving back pressure, and it is two pumping moulds to adjust the frequency of Q
The sum of block working frequency adjusts Q signal and pump signal to have the constant time lag time.As working-laser material A8 working-laser materials B
When the inverted population accumulated in 12 reaches maximum value, the high-voltage signal being added on Q-switch, output laser pulse are removed.
Claims (1)
1. a kind of high repetitive frequency pulsed pumping electrooptics Q-switched laser, including total reflective mirror, Full-reflection mirror seat, electro-optical Q-switch, electric light Q
Switch pedestal, polarization splitting prism, polarization splitting prism seat, side pump module A, working-laser material A, polarization apparatus, polarization apparatus seat,
Side pump module B, working-laser material B, laser output mirror, laser output mirror seat, laser enclosure；Wherein total reflective mirror is fixed on steel
In the Full-reflection mirror seat of system；Electro-optical Q-switch is fixed in ceramic electro-optical Q-switch pedestal；Polarization splitting prism is fixed on steel polarization
In prismatic specular seat；Working-laser material A working-laser materials B is separately mounted in side pump module A side pump modules B, and is connected with
Cooling water；Polarization apparatus is fixed in steel polarization apparatus seat；Laser output mirror is fixed in steel laser output mirror seat；Full-reverse lens
Seat electro-optical Q-switch pedestal polarization splitting prism seat side pump module A side pump module B laser output mirror seats are fixed on outside aluminum laser
In shell；It is characterized in that：Full-reverse lens are coated with the total reflection film of the wavelength, and reflecting optics are flat mirror or the eyeglass with curvature；
Electro-optical Q-switch is carried out electric-optically Q-switched by the way of moving back pressure；Polarization splitting prism is more than the saturating of 99%, s waves to the transmitance of p waves
It penetrates rate and is less than 1%；Side pump module A and side pump module B is pumped using quasi-continuous profile pump mode, is connected with cooling water refrigeration；
Operation material is clamped in be rodlike in side pump module A and side pump module B, is connected with cooling water and takes away heat；Polarization apparatus wavelength is
1064nm, both-end are coated with high transmittance film, can be rotated by 90 ° the polarization direction of linearly polarized light, be placed on side pump module A and side pump module B
It is intermediate；Laser output mirror is coated with 1064nm partial reflectance films, reflectivity 10%；When laser works normally, two pumping moulds
Block, that is, side pump module A and side pump module B is alternately pumped according to identical frequency, and resonant cavity is constituted with total reflective mirror and laser output mirror,
Form laser generation；Side pump module A and the delay time of side pump module B pumpings are the half that individual module pumps the intermittent time；
It is the sum of two pump module working frequencies of side pump module A and side pump module B to adjust the frequency of Q, adjusts Q signal and pump signal to have solid
Determine delay time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721841846.3U CN207896411U (en) | 2017-12-26 | 2017-12-26 | A kind of high repetitive frequency pulsed pumping electrooptics Q-switched laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721841846.3U CN207896411U (en) | 2017-12-26 | 2017-12-26 | A kind of high repetitive frequency pulsed pumping electrooptics Q-switched laser |
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| Publication Number | Publication Date |
|---|---|
| CN207896411U true CN207896411U (en) | 2018-09-21 |
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| CN201721841846.3U Expired - Fee Related CN207896411U (en) | 2017-12-26 | 2017-12-26 | A kind of high repetitive frequency pulsed pumping electrooptics Q-switched laser |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301684A (en) * | 2018-11-14 | 2019-02-01 | 西南技术物理研究所 | The solid state laser that diode is pumped in advance-normally pumped |
| CN110289542A (en) * | 2019-07-04 | 2019-09-27 | 南京信息工程大学 | A kind of 2 based on pyramid annular chamber μm Gao Zhongying injection frequency locking laser |
| CN110932069A (en) * | 2019-05-09 | 2020-03-27 | 长春理工大学 | Ultrahigh repetition frequency narrow pulse single-wavelength alternate Q-switched laser output method and laser |
| CN111585159A (en) * | 2020-06-01 | 2020-08-25 | 杭州波长光电科技有限公司 | Device and method for guaranteeing frequency stability of microchip laser |
| WO2023039960A1 (en) * | 2021-09-14 | 2023-03-23 | 杭州沪宁亮源激光器件有限公司 | Pumping source system with cooling |
-
2017
- 2017-12-26 CN CN201721841846.3U patent/CN207896411U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301684A (en) * | 2018-11-14 | 2019-02-01 | 西南技术物理研究所 | The solid state laser that diode is pumped in advance-normally pumped |
| CN110932069A (en) * | 2019-05-09 | 2020-03-27 | 长春理工大学 | Ultrahigh repetition frequency narrow pulse single-wavelength alternate Q-switched laser output method and laser |
| CN110289542A (en) * | 2019-07-04 | 2019-09-27 | 南京信息工程大学 | A kind of 2 based on pyramid annular chamber μm Gao Zhongying injection frequency locking laser |
| CN111585159A (en) * | 2020-06-01 | 2020-08-25 | 杭州波长光电科技有限公司 | Device and method for guaranteeing frequency stability of microchip laser |
| CN111585159B (en) * | 2020-06-01 | 2021-08-10 | 杭州波长光电科技有限公司 | Device and method for guaranteeing frequency stability of microchip laser |
| WO2023039960A1 (en) * | 2021-09-14 | 2023-03-23 | 杭州沪宁亮源激光器件有限公司 | Pumping source system with cooling |
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Granted publication date: 20180921 |