CN209461792U - High-power anhydrous cold side pump plate laser aid - Google Patents
High-power anhydrous cold side pump plate laser aid Download PDFInfo
- Publication number
- CN209461792U CN209461792U CN201920063503.1U CN201920063503U CN209461792U CN 209461792 U CN209461792 U CN 209461792U CN 201920063503 U CN201920063503 U CN 201920063503U CN 209461792 U CN209461792 U CN 209461792U
- Authority
- CN
- China
- Prior art keywords
- laser
- crystal
- array
- laser crystal
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Lasers (AREA)
Abstract
The utility model discloses high-power anhydrous cold side pump plate laser aid, it is sequentially arranged total reflection mirror, adjusts Q unit, polarizing film, pump module and output coupling mirror the laser beam propagation direction of device is coaxial；Total reflection mirror and output coupling mirror form resonant cavity, and total reflection mirror is 1064nm total reflection mirror；Adjusting Q unit is active adjusting Q crystal or any one moved back in pressure type photoelectricity Q-switch with feedback control circuit.The face heat dissipation that the high-power anhydrous cold side pump plate laser aid of the utility model is not pumped in addition to two sides, two pump faces have also carried out staggeredly radiating by gold plated copper reflex block, it ensure that the uniformity of double-side pumping laser crystal heat dissipation, reduce the thermal lensing effect of double-side pumping laser crystal, it is effectively improved the wavefront marginal distortion of laser aid, laser aid carries out temperature control using TEC thermoelectric cooler, effectively reduces the weight of laser aid.
Description
Technical field
The utility model belongs to laser aid technical field, and specific one kind is related to high-power anhydrous cold side pump plate laser dress
It sets.
Background technique
Side pump bar laser is compared to pole laser since the film-cooled heat of slab laser is big and extensive
"the" shape optical path is mostly used to overcome the heat dissipation limit of stick laser using, existing slab laser, but this device is simultaneously
The light path of fluorescence is increased, very strong ASE is had under gain condition, causes laser slab transmission wavefront marginal distortion excessive.
And existing side-pumped laser is mostly water cooling, volume is excessive, is unfavorable for being applied in laser ranging system；Therefore it develops
A kind of laser aid small in size, light-weight, good heat dissipation effect is imperative.
Utility model content
The purpose of the utility model is to provide high-power anhydrous cold side pump plate laser aids, solve existing profile pump
The problem that laser volume, weight are big, heat dissipation effect is poor.
The utility model is the technical scheme adopted is that high-power anhydrous cold side pump plate laser aid, in swashing for device
Light direction of beam propagation is coaxial to be sequentially arranged total reflection mirror, adjusts Q unit, polarizing film, pump module and output coupling mirror；It is all-trans
Mirror and output coupling mirror composition resonant cavity are penetrated, and total reflection mirror is 1064nm total reflection mirror；Adjust Q unit be active adjusting Q crystal or
Any one moved back in pressure type photoelectricity Q-switch with feedback control circuit, when tune Q unit is active adjusting Q crystal, actively Q-switched
Crystal selects LiNbO3Or RTP not deliquescent crystal；
Polarizing film and direction of beam propagation are at Brewster's angle.
The utility model is also characterized by
Pump module includes laser crystal seat, and lath-shaped laser crystal is provided with along laser crystal seat, laser crystal
Two corresponding end faces, which are all spaced, uniformly posts gold plated copper reflex block, the gold plated copper reflex block of front end face and the gold plated copper of rear end face
Reflex block interlaced arrangement, is additionally provided with even number LD array in laser crystal seat, each LD array face laser crystal,
Two corresponding end faces of laser crystal are staggered, and each LD array is located between the gap of adjacent gold plated copper reflex block formation；
Each LD array positioned at same end face is fixed on an array pinboard, before array pinboard is fixed on laser crystal seat
End face or rear end face；Each array pinboard be placed in Al it is heat sink on, Al is heat sink to post TEC thermoelectric cooling between array pinboard
Device, TEC thermoelectric cooler carry out temperature control to array pinboard；The both ends of laser crystal are additionally provided with and laser crystal width
Identical aperture, the upper surface of laser crystal are additionally provided with vertical several heat dissipation copper posts upward, and heat dissipation copper post is another
End is fixed in laser crystal seat.Heat dissipation copper post can radiate, while laser crystal has also been fixed on laser crystal
In seat.
LD array is identical as gold plated copper reflection number of blocks, and LD array is no less than 6.
Laser crystal is semiconductor double-side pumping slab laser stick, may be selected to use Nd:YAG, Nd:YAP crystal.
Polarizing film and direction of beam propagation are at Brewster's angle.
When tune Q unit is active adjusting Q crystal, actively Q-switched crystal selects LiNbO3Or RTP not deliquescent crystal.
Laser crystal, adjusting Q crystal, each light passing end face of Brewster piece are coated with 1064nm anti-reflection film.
Gold plated copper reflex block is that one layer of gold has been plated on copper billet.
The utility model has the beneficial effects that the high-power anhydrous cold side pump plate laser aid of the utility model selects half
Conductor double-side pumping slab laser stick, the face heat dissipation not pumped in addition to two sides, two pump faces by gold plated copper reflex block also into
It has gone and has staggeredly radiated；It ensure that the uniformity of laser crystal heat dissipation, reduce the thermal lensing effect of double-side pumping laser crystal, effectively
Improve the wavefront marginal distortion of laser, laser carries out temperature control using TEC thermoelectric cooler, effectively reduces laser
Weight.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the high-power anhydrous cold side pump plate laser aid of the utility model；
Fig. 2 is the sectional view of the high-power anhydrous cold side pump plate laser aid of the utility model；
Fig. 3 is the embodiment light path schematic diagram of the high-power anhydrous cold side pump plate laser aid of the utility model.
In figure, 1. total reflection mirrors, 2. adjust Q unit, and 3. polarizing films, 4.Al is heat sink, 5. diaphragms, 6. laser crystal seats, and 7. swash
Luminescent crystal, 8. gold plated copper reflex blocks, 9.LD array, 10. array pinboards, 12. output coupling mirrors.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
The high-power anhydrous cold side pump plate laser device structure of the utility model as shown in Figure 1, device laser light
The beam direction of propagation is coaxial to be sequentially arranged total reflection mirror 1, adjusts Q unit 2, polarizing film 3, pump module and output coupling mirror 12；Entirely
Reflecting mirror 1 and output coupling mirror 12 form resonant cavity, and total reflection mirror 1 is 1064nm total reflection mirror；Tune Q unit 2 is actively Q-switched
Crystal or any one moved back in pressure type photoelectricity Q-switch with feedback control circuit.
As shown in Fig. 2, pump module includes laser crystal seat 6, lath-shaped laser crystal is provided with along laser crystal seat 6
7, two corresponding end faces of laser crystal 7 be all spaced uniformly post gold plated copper reflex block 8, front end face gold plated copper reflex block with
The gold plated copper reflex block interlaced arrangement of rear end face is additionally provided with even number LD array 9, each LD array 9 in laser crystal seat 6
It faces laser crystal 7, be staggered in 7 two corresponding end faces of laser crystal, it is anti-that each LD array 9 is located at adjacent gold plated copper
It penetrates between the gap of the formation of block 8；Each LD array 9 positioned at same end face is fixed on an array pinboard 10, and array turns
Fishplate bar 10 is fixed on the front end face or rear end face of laser crystal seat 6；Each array pinboard 10 is placed on Al heat sink 4, and Al is heat sink 4
TEC thermoelectric cooler is posted between array pinboard 10, TEC thermoelectric cooler carries out temperature control to array pinboard 10；
The both ends of laser crystal 7 are additionally provided with the aperture 5 of same size with laser crystal 7, and the upper surface of laser crystal 7 is also set up
There are vertical several heat dissipation copper posts upward, the heat dissipation copper post other end is fixed on laser crystal seat inner wall, and radiate copper post
To radiate, while also laser crystal 7 being fixed in laser crystal seat.
LD array 9 is identical as 8 quantity of gold plated copper reflex block, and LD array 9 is no less than 6.
Laser crystal 7 is semiconductor double-side pumping slab laser stick, may be selected to use Nd:YAG, Nd:YAP crystal.
Polarizing film 3 and direction of beam propagation are at Brewster's angle.
When tune Q unit 2 is active Q crystal, actively Q-switched crystal selects LiNbO3Or RTP not deliquescent crystal.
Laser crystal, adjusting Q crystal, each light passing end face of Brewster piece are coated with 1064nm anti-reflection film, total reflective mirror plating
1064nm is all-trans film, and the part outgoing mirror plating 1064nm penetrates film.
Wherein, LD array is pumping source, is made of multiple semiconductor bar items.
Due to the good heat dissipation effect of Cu, so heat dissipation copper post is selected directly to contact laser crystal, large volume is heat sink selection Al
The heat sink density for being primarily due to Al is small, light-weight.
Gold plated copper reflex block is that one layer of gold has been plated on copper billet, it is gold-plated be in order to reflect unabsorbed pump light so that
Pump light is again introduced into laser crystal, increases the service efficiency of pump light, that is, increases pumping efficiency.
Laser crystal seat 6 is made of Cu, is conducive to heat dissipation.
The utility model is described in detail below with reference to embodiment: for exporting energy and be 90mJ laser
As shown in figure 3, double-side pumping laser crystal selects 6mm × 6mm × 80mm, doping concentration is laser light path
The Nd:YAG crystal bar of 1.1at%.The LD array that total peak power is 4.5kW is driven by an external power supply, the repetition of power supply
Frequency is that 1-25Hz is adjustable, and pulse width is 250 μ s.Pump module is made of 6 LD arrays, using only temperature point mode,
Temperature spot setting value: 65 DEG C, i.e., at 65 DEG C of temperature of folded battle array, its centre of luminescence wavelength is 808nm ± 3nm.According to temperature drift coefficient
0.28nm/ DEG C, it is 796.8nm that 25 DEG C, which are tested folded paroxysm center wavelength of light,.Peak power requirements exist: 25 DEG C of array temperature, work
Frequency 25Hz, pulsewidth of discharging: 250 μ s, operating current≤250A, when the time is not less than 70s, >=1500W；In array temperature 65
DEG C, working frequency 25Hz, pulsewidth of discharging: 250 μ s, operating current≤200A, when the time is not less than 70s >=900W
The a length of 220mm of the chamber of resonant cavity, double-side pumping laser crystal is 6mm × 6mm by face, estimates the damage of resonant cavity
Consumption is 0.05, and the optimum reflectivity that can be calculated output coupling mirror is 53.59%.In order to increase the service life of laser, I
Select the reflectivity of slightly below optimum reflectivity, that is, selecting the reflectivity of output coupling mirror is 50%.Select a TP (P light
Transmitance) be 99.52%, TS (s light transmission rate) be 0.123% Brewster piece as polarizing film, clear aperture 10mm,
Outer diameter 32mm.Laser crystal, adjusting Q crystal, each light passing end face of Brewster piece are coated with 1064nm anti-reflection film, total reflective mirror plating
1064nm high-reflecting film, output coupling mirror plate the part the 1064nm reflectance coating that transmitance is 50%.
Laser crystal uses double-side pumping laser crystal, and 6 LD arrays are staggered in two end faces of laser crystal, two-sided
Pumped laser crvstal interlocks non-pumping position of Nd (non-pumping position of Nd refers to the gap between the adjacent LD array being interspersed)
It is close to heat dissipation copper post to radiate to double-side pumping laser crystal, to reduce the wavefront marginal distortion of laser, reduces two-sided
The thermal lensing effect of pumped laser crvstal；The present embodiment is electric-optically Q-switched using pressure type is moved back, select both ends be coated with 1064nm anti-reflection film,
Length is 20mm, and the LN (lithium columbate crystal) that clear aperture is 9mm is used as electro-optical Q-switch element.Select auto-collimation flat when debugging
Row light pipe, guarantees the collimation of each optical element, to guarantee the consistency of laser beam axis, improves resonant cavity efficiency.
The utility model is not limited to the above embodiments, and the laser aid LD array of the utility model and heat dissipation copper post are interlocked cloth
It sets, substantially reduces the volume of laser aid.The quantity of LD array can make corresponding adjustment according to the actual situation, can satisfy
The demand of different capacity laser aid, in addition to the face not pumped can be carried out using the laser crystal seat of heat dissipation copper post and steel structure
Heat dissipation, two pump faces also use the gold plated copper reflex block of interlaced arrangement and Al is heat sink radiates；The knot of this four sides heat dissipation
Structure ensure that the uniformity of double-side pumping laser crystal heat dissipation, reduce the thermal lensing effect of double-side pumping laser crystal, effectively
Improve the wavefront marginal distortion of laser aid.
Wherein, gold plated copper reflex block can not only play heat spreading function, and the gilding on copper billet, which can also reflect, not to be inhaled
The pump light of receipts increases the service efficiency of pump light, that is, increases pumping efficiency so that pump light is again introduced into laser crystal.
Moreover, laser aid carries out temperature control using TEC thermoelectric cooler, the weight of laser aid is effectively reduced.
Claims (5)
1. high-power anhydrous cold side pump plate laser aid, which is characterized in that same in the laser beam propagation direction of described device
It is axially sequentially arranged total reflection mirror (1), adjusts Q unit (2), polarizing film (3), pump module and output coupling mirror (12)；It is described complete
Reflecting mirror (1) and the output coupling mirror (12) form resonant cavity, and the total reflection mirror (1) is 1064nm total reflection mirror, institute
State the part the 1064nm reflectance coating that output coupling mirror (12) plating transmitance is 50%；The tune Q unit (2) is active adjusting Q crystal
Or any one moved back in pressure type photoelectricity Q-switch with feedback control circuit, the tune Q unit (2) are active adjusting Q crystal
When, the actively Q-switched crystal selects LiNbO3Or RTP not deliquescent crystal；
The polarizing film (3) and direction of beam propagation are at Brewster's angle.
2. high-power anhydrous cold side pump plate laser aid according to claim 1, which is characterized in that the pump module
Including laser crystal seat (6), lath-shaped laser crystal (7), the laser crystal are provided in the laser crystal seat (6)
(7) two corresponding end faces are all spaced the gold plated copper reflex block and rear end face for uniformly posting gold plated copper reflex block (8), front end face
Gold plated copper reflex block interlaced arrangement, even number LD array (9) is additionally provided in the laser crystal seat (6), it is each described
LD array (9) faces laser crystal (7), is staggered in (7) two corresponding end faces of the laser crystal, each LD
Array (9) is located between the gap of adjacent gold plated copper reflex block (8) formation；Each LD array (9) positioned at same end face
Be fixed on an array pinboard (10), the array pinboard (10) be fixed on laser crystal seat (6) front end face or after
End face；Each array pinboard (10) is placed on Al heat sink (4), between the Al heat sink (4) and array pinboard (10)
TEC thermoelectric cooler is posted, the TEC thermoelectric cooler carries out temperature control to array pinboard (10)；The laser crystal
(7) both ends are additionally provided with and laser crystal (7) aperture (5) of same size, and the upper surface of the laser crystal (7) is also
Several heat dissipation copper posts vertically upward are evenly arranged with, the heat dissipation copper post other end is fixed in laser crystal seat (6).
3. high-power anhydrous cold side pump plate laser aid according to claim 2, which is characterized in that the LD array
(9) identical as gold plated copper reflex block (8) quantity, the LD array (9) is no less than 6.
4. high-power anhydrous cold side pump plate laser aid according to claim 2, which is characterized in that the laser crystal
(7) selection uses Nd:YAG, Nd:YAP crystal.
5. high-power anhydrous cold side pump plate laser aid according to claim 2, which is characterized in that the gold plated copper is anti-
Penetrating block (8) is that one layer of gold has been plated on copper billet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920063503.1U CN209461792U (en) | 2019-01-15 | 2019-01-15 | High-power anhydrous cold side pump plate laser aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920063503.1U CN209461792U (en) | 2019-01-15 | 2019-01-15 | High-power anhydrous cold side pump plate laser aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209461792U true CN209461792U (en) | 2019-10-01 |
Family
ID=68044552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920063503.1U Expired - Fee Related CN209461792U (en) | 2019-01-15 | 2019-01-15 | High-power anhydrous cold side pump plate laser aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209461792U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713556A (en) * | 2019-01-15 | 2019-05-03 | 西安中科洺光测控技术有限公司 | A kind of anhydrous cold side pump plate laser aid of high-power compact |
| CN111644749A (en) * | 2020-05-19 | 2020-09-11 | 黎功成 | Energy-saving and environment-friendly gas laser tube for laser marking machine |
| CN117526069A (en) * | 2024-01-05 | 2024-02-06 | 北京镭科光电科技有限公司 | Pump module of VCSEL side-pumped solid state laser and corresponding solid state laser |
-
2019
- 2019-01-15 CN CN201920063503.1U patent/CN209461792U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713556A (en) * | 2019-01-15 | 2019-05-03 | 西安中科洺光测控技术有限公司 | A kind of anhydrous cold side pump plate laser aid of high-power compact |
| CN109713556B (en) * | 2019-01-15 | 2020-12-22 | 西安中科洺光测控技术有限公司 | High-power small-size no water cooling side pump lath laser device |
| CN111644749A (en) * | 2020-05-19 | 2020-09-11 | 黎功成 | Energy-saving and environment-friendly gas laser tube for laser marking machine |
| CN111644749B (en) * | 2020-05-19 | 2022-06-21 | 深圳铭创智能装备有限公司 | Energy-saving and environment-friendly gas laser tube for laser marking machine |
| CN117526069A (en) * | 2024-01-05 | 2024-02-06 | 北京镭科光电科技有限公司 | Pump module of VCSEL side-pumped solid state laser and corresponding solid state laser |
| CN117526069B (en) * | 2024-01-05 | 2024-04-05 | 北京镭科光电科技有限公司 | Pump module of VCSEL side-pumped solid state laser and corresponding solid state laser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209461792U (en) | High-power anhydrous cold side pump plate laser aid | |
| Hanson | Improved laser performance at 946 and 473 nm from a composite Nd: Y3Al5O12 rod | |
| WO2021128828A1 (en) | End-pump multi-pass slab laser amplifier | |
| CN101483312A (en) | Terminal surface pump order variant grade doping composite plate laser amplifier | |
| CN100428587C (en) | Laser diode side pumped thulium/holmium double doped lithium lutetium fluoride crystal laser | |
| CN103606810A (en) | Multi-pass pump light transmission system and disc solid laser | |
| CN110086070B (en) | Novel thin-chip laser structure with high pumping absorption and high power output | |
| Li et al. | A kilowatt level diode-side-pumped QCW Nd: YAG ceramic laser | |
| CN101267083B (en) | Full-solid multi-cavity combined intra-cavity frequency multiplication one-way overlapped output standard continuous green light laser | |
| CN106058632B (en) | A kind of adjustable passive Q-adjusted raman laser system of pulse energy based on bonded crystals | |
| CN109378698A (en) | A kind of high-power strip green (light) laser | |
| CN201365063Y (en) | End-pumped order-gradient doping composite slat laser amplifier | |
| CN109713556A (en) | A kind of anhydrous cold side pump plate laser aid of high-power compact | |
| CN203503967U (en) | Pump light multi-stroke transmission system and disc solid laser | |
| Baker et al. | A planar waveguide Nd: YAG laser with a hybrid waveguide–unstable resonator | |
| CN100461555C (en) | Quasi-continuous two-bar series inner cavity frequency multiflier high power green laser of 200 vatts grade | |
| CN201853935U (en) | Compact multi-pulse electrooptic Q-switched solid laser | |
| CN201285988Y (en) | Laser diode side-pumped composite board laser | |
| CN112290360A (en) | Dual-wavelength free control output laser | |
| CN201576886U (en) | Radiating device of semiconductor laser | |
| CN101267084B (en) | Multiple frequency one-way overlapped output standard continuous green light laser inside full solid T double-cavity combination cavity | |
| CN105375253B (en) | A kind of double Z shaped battened construction laser amplification device of the more space angles of high efficiency | |
| CN201001003Y (en) | Laser diode side pumped thulium/holmium double doped lithium lutetium fluoride crystal laser | |
| Liu et al. | 4.55 kW LD end-pumped Nd: YAG surface gain slab laser | |
| CN105322429A (en) | Semiconductor laser end plane pumping Er: YSGG electro-optical Q-switched laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191001 Termination date: 20210115 |