CN107863677B - A kind of multichannel end pumped thin disk solid state laser - Google Patents
A kind of multichannel end pumped thin disk solid state laser Download PDFInfo
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- CN107863677B CN107863677B CN201710968299.3A CN201710968299A CN107863677B CN 107863677 B CN107863677 B CN 107863677B CN 201710968299 A CN201710968299 A CN 201710968299A CN 107863677 B CN107863677 B CN 107863677B
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- dichroic mirror
- mirror
- pump light
- totally reflected
- light
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094038—End pumping
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The present invention relates to a kind of multichannel end pumped thin disk solid state lasers, comprising: the first total reflective mirror (1), dichroic mirror I (2), crystal microchip (3), dichroic mirror II (4), dichroic mirror III (5), dichroic mirror IV (6) and outgoing mirror (7)；First pump light, the second pump light, third pump light, the 4th pump light are the pump light that 790nm semiconductor laser is formed, and the crystal microchip (3) is Tm:YLF crystal, and the oscillation light is 1908nm laser；First total reflective mirror (1) plates 1908nm high-reflecting film, the dichroic mirror I (2), dichroic mirror II (4), dichroic mirror III (5), dichroic mirror IV (6) plating 1908nm high is anti-and 790nm high transmittance film, the outgoing mirror (7) plate 1908nm fractional transmission film；All light pass surfaces of crystal microchip (3) plate 790nm, 1908nm high transmittance film.The present invention can be such that thin-sheet laser beam quality improves, light power increases.
Description
Technical field
The present invention relates to a kind of Solid State Laser generating device, especially a kind of multichannel end pumped thin disk solid state laser.
Background technique
Solid state laser has important application in fields such as biologic medical, spectroscopy, Atmospheric Survey, photoelectronic warfares.Swash
The fuel factor of luminescent crystal is the big obstacle that laser performance is promoted.Slice-shaped laser crystal can have by biggish heat dissipation area
Effect alleviates the negative effect of fuel factor, obtains the favor of people.The thin-sheet laser of diode pumping is very widely used.
In terms of material micro Process, the output of the thin-sheet laser of LD pumping is stable and power is high, and the laser beam quality of output is good,
Material micro Process industry gains great popularity, for example, thin-sheet laser punched hole is than other classes in thin metal is punched and welded
The laser of type wants depth and edge is very smooth；The thin-sheet laser single-frequency of LD pumping is good, is widely used in optical information
The fields such as storage, holography；In recent years, thin-sheet laser military field is also gradually shown up prominently, and carries out ranging, guidance using laser
Etc. technologies be widely applied, laser weapon is increasingly becoming the new lover that every country is chased, in August, 2013, and U.S.'s Boeing is public
The thin-sheet laser system of department's exploitation is realized with very high electro-optical efficiency, and obtaining output power is swashing for 30kW
Light output has had reached weapongrade level, can be provided in the precision strike capability under a variety of tactical missions, but, with answering
Widespread demand, the application more demanding for some pairs of beam qualities, many lasers can not be met the requirements at present, because
This, it is desirable that improve laser beam quality, high power becomes as technical problem urgently to be resolved.
Summary of the invention
The present invention in order to solve existing thin-sheet laser beam quality is low, the small technical problem of light power and design complete
New solid-state laser apparatus.
A kind of multichannel end pumped thin disk solid state laser provided by the invention, comprising:
First total reflective mirror 1, dichroic mirror I2, crystal microchip 3, dichroic mirror II4, dichroic mirror III5, dichroic mirror IV6 and outgoing mirror
7；
After first pump light is coupled, crystal microchip 3 is injected transmitted through dichroic mirror I2, forms oscillation light, oscillation light is through two
Look mirror II4 is totally reflected to dichroic mirror III5, and is totally reflected to dichroic mirror IV6 through dichroic mirror III5, after dichroic mirror IV6 total reflection
It is projected from outgoing mirror 7；
After second pump light is coupled, crystal microchip 3 is injected transmitted through dichroic mirror II4, forms oscillation light, oscillation light is through two
Look mirror I2 is totally reflected to after the first total reflective mirror 1 and is reflected back dichroic mirror I2, and is reflected into dichroic mirror II4 through dichroic mirror I2, then
It is totally reflected to dichroic mirror III5, and is totally reflected to dichroic mirror IV6 through dichroic mirror III5, from output after dichroic mirror IV6 total reflection
Mirror 7 projects；
After third pump light is coupled, crystal microchip 3 is injected transmitted through dichroic mirror III5, forms oscillation light, oscillation light warp
It is projected after dichroic mirror IV6 total reflection from outgoing mirror 7；
After 4th pump light is coupled, crystal microchip 3 is injected transmitted through dichroic mirror IV6, forms oscillation light, oscillation light is through two
Look mirror III5 is totally reflected to dichroic mirror II4, and is totally reflected to dichroic mirror I2 through dichroic mirror II4, is then totally reflected through dichroic mirror I2
It is reflected back dichroic mirror I2 again after to the first total reflective mirror 1, and is reflected into dichroic mirror II4 through dichroic mirror I2, is then totally reflected to two colors
Mirror III5, and it is totally reflected to dichroic mirror IV6 through dichroic mirror III5, it is projected after dichroic mirror IV6 total reflection from outgoing mirror 7；
First pump light, the second pump light, third pump light, the 4th pump light are 790nm semiconductor laser
The pump light of formation, the crystal microchip 3 are Tm:YLF crystal, and the oscillation light is 1908nm laser；
First total reflective mirror 1 plates 1908nm high-reflecting film, the dichroic mirror I2, dichroic mirror II4, dichroic mirror III5, two colors
Mirror IV6 plates 1908nm high instead and 790nm high transmittance film, and the outgoing mirror 7 plates 1908nm fractional transmission film；3 institute of crystal microchip
There is light pass surface to plate 790nm, 1908nm high transmittance film.
Further, the dichroic mirror I2, dichroic mirror IV6 are 45 degree of settings, the dichroic mirror II4, dichroic mirror
The setting of III522.5 degree.
Further, first pump light, the second pump light, third pump light, the 4th pump light general power be
500W exports the continuous wave for 165W, and beam quality factor M2 is less than 3.
Further, the crystal microchip (3) forms four incident end faces after cutting four angles by square crystal thin slice, cuts
Cutting the rear crystal microchip (3) interior angle is 135 degree.
It further, further include heat sink, heat sink abutting crystal microchip (3) the sake two sides setting.
Beneficial effects of the present invention: the present invention changes previous use from thin slice by using multichannel end pumping mode
The mode of laser plane pumping, so that pump light and oscillation light reduce the thermal lens effect of thin-sheet laser in same optical path
While answering, the beam quality of raising obtains the output of high power laser light, so that thin plate crystals are as the extensive of laser crystal
It is promoted using further.Simultaneously because pump mode is end pumping, laser light regulating technology is required to reduce, is easy to get sharp
The output of light.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is the structural schematic diagram of multichannel end pumped thin disk solid state laser of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
As shown in Figure 1, a kind of multichannel end pumped thin disk solid state laser provided by the invention, comprising:
First total reflective mirror 1, dichroic mirror I2, crystal microchip 3, dichroic mirror II4, dichroic mirror III5, dichroic mirror IV6 and outgoing mirror
7；
After first pump light is coupled, crystal microchip 3 is injected transmitted through dichroic mirror I2, forms oscillation light, oscillation light is through two
Look mirror II4 is totally reflected to dichroic mirror III5, and is totally reflected to dichroic mirror IV6 through dichroic mirror III5, after dichroic mirror IV6 total reflection
It is projected from outgoing mirror 7；
After second pump light is coupled, crystal microchip 3 is injected transmitted through dichroic mirror II4, forms oscillation light, oscillation light is through two
Look mirror I2 is totally reflected to after the first total reflective mirror 1 and is reflected back dichroic mirror I2, and is reflected into dichroic mirror II4 through dichroic mirror I2, then
It is totally reflected to dichroic mirror III5, and is totally reflected to dichroic mirror IV6 through dichroic mirror III5, from output after dichroic mirror IV6 total reflection
Mirror 7 projects；
After third pump light is coupled, crystal microchip 3 is injected transmitted through dichroic mirror III5, forms oscillation light, oscillation light warp
It is projected after dichroic mirror IV6 total reflection from outgoing mirror 7；
After 4th pump light is coupled, crystal microchip 3 is injected transmitted through dichroic mirror IV6, forms oscillation light, oscillation light is through two
Look mirror III5 is totally reflected to dichroic mirror II4, and is totally reflected to dichroic mirror I2 through dichroic mirror II4, is then totally reflected through dichroic mirror I2
It is reflected back dichroic mirror I2 again after to the first total reflective mirror 1, and is reflected into dichroic mirror II4 through dichroic mirror I2, is then totally reflected to two colors
Mirror III5, and it is totally reflected to dichroic mirror IV6 through dichroic mirror III5, it is projected after dichroic mirror IV6 total reflection from outgoing mirror 7；
First pump light, the second pump light, third pump light, the 4th pump light are 790nm semiconductor laser
The pump light of formation, the crystal microchip 3 are Tm:YLF crystal, and the oscillation light is 1908nm laser；Doping concentration is 8-
14%.Thin slice gain media is made of the transparent dielectric material doped with active ions.Specifically, transparent dielectric material can also be with
Are as follows: one of yttrium-aluminium-garnet (YAG), Gd-Ga garnet (GGG), glass, vanadate, tungstates, ceramics.Active ions can
With are as follows: one or more of Yb3+, Nd3+, Tm3+, Ho3+.After pump light directive thin slice gain media, part pump light
Energy is absorbed by the active ions in thin slice gain media, and energy level transition occurs for active ions, to generate laser.
First total reflective mirror 1 plates 1908nm high-reflecting film, the dichroic mirror I2, dichroic mirror II4, dichroic mirror III5, two colors
Mirror IV6 plates 1908nm high instead and 790nm high transmittance film, and the outgoing mirror 7 plates 1908nm fractional transmission film；3 institute of crystal microchip
There is light pass surface to plate 790nm, 1908nm high transmittance film.
In addition, the dichroic mirror I2, dichroic mirror IV6 are 45 degree of settings, the dichroic mirror II4, dichroic mirror III5 are 22.5
Degree setting.So that optical path is capable of forming stable resonator as benefit.
In addition, the single power 100- of first pump light, the second pump light, third pump light, the 4th pump light
150W, general power 400-600W, normal power 500W can obtain the continuous wave that output power is 150-200W, stablize
Output is the continuous wave of 165W, and beam quality factor M2 is less than 3.The pump light that pumping source generates carries out optical fiber by conduction optical fiber
Coupling is exported to the coupled system of collimation focusing.Pump light focusing unit erector is fixed on the eyeglass of eyeglass fixing device for installing
On mounting rack.
In addition, the crystal microchip (3) forms four incident end faces after cutting four angles by square crystal thin slice, after cutting
Crystal microchip (3) interior angle is 135 degree.
In addition, further include cooling device, such as heat sink, heat sink abutting crystal microchip (3) the sake two sides setting.
Cooling device is fixed on pedestal.Heat sink includes microchannel cavity, inlet and liquid outlet.Microchannel cavity is both ends open
Hollow columnar structures or serpentine configuration.Inlet and liquid outlet are passed in and out for coolant liquid, and coolant liquid enters cooling by inlet
Inside cavity, then flowed out by liquid outlet, to take away heat.Specifically in the present embodiment, inlet and liquid outlet are set to heat
Heavy both ends.Wherein, coolant liquid other can be commonly used for the liquid of coolant for water, liquid nitrogen etc..
The crystal microchip (3) be placed in a three-D electric adjustment platform on, by computer control carry out front, rear, left and right,
Bow and face upward the adjusting of six directions.Specifically, the optical signal detected can be changed into after analog signal in fact by a detector
When be input to the computer, the computer is drawn up out laser model according to the analog signal, and pre- with the computer
If laser model be compared, and according to comparison result adjust automatically three-dimensional adjust platform state, until the output light
Performance matches with the preset laser model.
The present invention changes previous use from the side that thin-sheet laser plane pumps by using multichannel end pumping mode
Formula, so that pump light and oscillation light are in same optical path, while reducing the thermal lensing effect of thin-sheet laser, the light beam of raising
Quality obtains the output of high power laser light, so that further promotion is widely used as laser crystal in thin plate crystals.Simultaneously
Since pump mode is end pumping, laser light regulating technology is required to reduce, is easy to get the output of laser.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc. execute each embodiment
Or method described in certain parts of embodiment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (3)
1. a kind of multichannel end pumped thin disk solid state laser characterized by comprising
First total reflective mirror (1), dichroic mirror I (2), crystal microchip (3), dichroic mirror II (4), dichroic mirror III (5), dichroic mirror IV (6)
With outgoing mirror (7)；
After first pump light is coupled, crystal microchip (3) are injected transmitted through dichroic mirror I (2), form oscillation light, oscillation light is through two
Look mirror II (4) is totally reflected to dichroic mirror III (5), and is totally reflected to dichroic mirror IV (6) through dichroic mirror III (5), through dichroic mirror IV
(6) it is projected after being totally reflected from outgoing mirror (7)；
After second pump light is coupled, crystal microchip (3) are injected transmitted through dichroic mirror II (4), form oscillation light, oscillation light is through two
Look mirror I (2) is totally reflected to the first total reflective mirror (1) afterwards and is all-trans and is emitted back towards dichroic mirror I (2), and is totally reflected to two through dichroic mirror I (2)
Look mirror II (4) is then totally reflected to dichroic mirror III (5), and is totally reflected to dichroic mirror IV (6), Jing Erse through dichroic mirror III (5)
It is projected after mirror IV (6) total reflection from outgoing mirror (7)；
After third pump light is coupled, crystal microchip (3) are injected transmitted through dichroic mirror III (5), form oscillation light, oscillation light warp
It is projected after dichroic mirror IV (6) total reflection from outgoing mirror (7)；
After 4th pump light is coupled, crystal microchip (3) are injected transmitted through dichroic mirror IV (6), form oscillation light, oscillation light is through two
Look mirror III (5) is totally reflected to dichroic mirror II (4), and is totally reflected to dichroic mirror I (2) through dichroic mirror II (4), then through dichroic mirror I
(2) it is totally reflected to the first total reflective mirror (1) afterwards and is all-trans and be emitted back towards dichroic mirror I (2), and be totally reflected to dichroic mirror II through dichroic mirror I (2)
(4), it is then totally reflected to dichroic mirror III (5), and is totally reflected to dichroic mirror IV (6) through dichroic mirror III (5), through dichroic mirror IV
(6) it is projected after being totally reflected from outgoing mirror (7)；
First pump light, the second pump light, third pump light, the 4th pump light are that 790nm semiconductor laser is formed
Pump light, the crystal microchip (3) be Tm:YLF crystal, the oscillation light be 1908nm laser；
First total reflective mirror (1) plates 1908nm high-reflecting film, the dichroic mirror I (2), dichroic mirror II (4), dichroic mirror III (5),
Dichroic mirror IV (6) plates 1908nm high instead and 790nm high transmittance film, and the outgoing mirror (7) plates 1908nm fractional transmission film；The crystal
All light pass surfaces of thin slice (3) plate 790nm, 1908nm high transmittance film；
The crystal microchip (3) forms four incident end faces after cutting four angles by square crystal thin slice, the crystal after cutting
Thin slice (3) interior angle is 135 degree；
It further include heat sink, heat sink abutting crystal microchip (3) the sake two sides setting, it is described heat sink including snakelike microchannel
Cavity, inlet and liquid outlet, coolant liquid enter inside the snakelike microchannel cavity body by the inlet, then by going out
Liquid mouth outflow, to take away heat, wherein the coolant liquid is liquid nitrogen.
2. solid laser system according to claim 1, which is characterized in that the dichroic mirror I (2), dichroic mirror IV (6) are
45 degree of settings, the dichroic mirror II (4), (5) 22.5 degree of dichroic mirror III settings.
3. solid laser system according to claim 2, which is characterized in that first pump light, the second pump light,
Three pump lights, the 4th pump light general power be 500W, export the continuous wave for 165W, beam quality factor M2 is less than 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968299.3A CN107863677B (en) | 2017-10-18 | 2017-10-18 | A kind of multichannel end pumped thin disk solid state laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968299.3A CN107863677B (en) | 2017-10-18 | 2017-10-18 | A kind of multichannel end pumped thin disk solid state laser |
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| Publication Number | Publication Date |
|---|---|
| CN107863677A CN107863677A (en) | 2018-03-30 |
| CN107863677B true CN107863677B (en) | 2019-09-27 |
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|---|---|---|---|
| CN201710968299.3A Expired - Fee Related CN107863677B (en) | 2017-10-18 | 2017-10-18 | A kind of multichannel end pumped thin disk solid state laser |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4444435A1 (en) * | 1994-12-14 | 1996-06-27 | Daimler Benz Ag | Optically pumped solid-state laser |
| EP0889563A1 (en) * | 1998-03-03 | 1999-01-07 | Oerlikon Contraves Ag | Optical amplifier for free space optical communication systems |
| US6081542A (en) * | 1998-06-12 | 2000-06-27 | Lambda Physik Gmbh | Optically pumped laser with multi-facet gain medium |
| CN1398028A (en) * | 2002-08-23 | 2003-02-19 | 清华大学 | Corner pumping method for plate strip and its solid laser gain module |
| US9484705B2 (en) * | 2012-11-09 | 2016-11-01 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Optically end-pumped slab amplifier comprising pump modules arranged in a distributed manner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6873639B2 (en) * | 1993-05-28 | 2005-03-29 | Tong Zhang | Multipass geometry and constructions for diode-pumped solid-state lasers and fiber lasers, and for optical amplifier and detector |
-
2017
- 2017-10-18 CN CN201710968299.3A patent/CN107863677B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4444435A1 (en) * | 1994-12-14 | 1996-06-27 | Daimler Benz Ag | Optically pumped solid-state laser |
| EP0889563A1 (en) * | 1998-03-03 | 1999-01-07 | Oerlikon Contraves Ag | Optical amplifier for free space optical communication systems |
| US6081542A (en) * | 1998-06-12 | 2000-06-27 | Lambda Physik Gmbh | Optically pumped laser with multi-facet gain medium |
| CN1398028A (en) * | 2002-08-23 | 2003-02-19 | 清华大学 | Corner pumping method for plate strip and its solid laser gain module |
| US9484705B2 (en) * | 2012-11-09 | 2016-11-01 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Optically end-pumped slab amplifier comprising pump modules arranged in a distributed manner |
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| CN107863677A (en) | 2018-03-30 |
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