CN100379100C - Laser medium cooling device of thin laser - Google Patents
Laser medium cooling device of thin laser Download PDFInfo
- Publication number
- CN100379100C CN100379100C CNB2005101120247A CN200510112024A CN100379100C CN 100379100 C CN100379100 C CN 100379100C CN B2005101120247 A CNB2005101120247 A CN B2005101120247A CN 200510112024 A CN200510112024 A CN 200510112024A CN 100379100 C CN100379100 C CN 100379100C
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- red copper
- laser
- thin
- copper clamp
- white stone
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Abstract
The present invention relates to a laser medium cooling device of a sheet laser. The present invention is characterized in that a flat-bottomed disc-shaped red copper clamp of which an opening is provided with external threads, and a sliding guide rail for white stone window flat plates to slide is arranged in the flat-bottomed disc-shaped red copper clamp; the red copper clamp is fixed on a semiconductor thermoelectric refrigeration piece through fixing screws; the inner bottom of the red copper clamp is also provided with a thin metal indium layer; the laser gain media, the white stone window flat plate and a miniature annular sealed hydraulic pressure packet are orderly arranged on the thin metal indium layer in the red copper clamp; then, internal threads of an endless belt cover is spun on the external threads of the red copper clamp to apply pressure on the miniature annular sealed hydraulic packet; the outside of the miniature annular sealed hydraulic packet is connected with a hydraulic pressure gage. The present invention can make the laser gain media uniformly and tightly stuck, cooled and sink in hot mode; the present invention improves the mechanical stress and cooling ununiformity to achieve the good cooling effect. The present invention has the advantages of compact structure, practicability, good cooling effect, etc.
Description
Technical field
The present invention relates to solid state laser, the particularly thermally sensitive Yb of mixing active ions gain medium carries out all solid state thin-sheet laser of high brightness of end pumping.
Background technology
The solid state laser of diode pumping (DPSSL) mainly contains four kinds of configurations to the high-average power development: end pumping rod, side pumping rod, side pumping lath and face pumping and edge pumped thin disk laser, wherein the feasibility study in recent years of thin-sheet laser quilt is for having most the high brightness laser system of development prospect.The outbound course of its laser beam is vertical with the thermal gradient of laser medium, can overcome the high power that the conventional solid laser can't go beyond and the contradiction of high brightness theoretically, has output beam quality near diffraction limit, power output can develop into the potentiality of tens of kilowatts of average powers even hundred kilowatts, has extremely important Practical significance (referring to S.Erhard in military and national defense and industrial circle, M.Karszewski, C.Stewen et.al, be published in OSA TOPS AdvancedSolid State Lasers 2000,34,78～84 pages paper).According to the mode of operation of system, the temperature of gain medium need remain between-10 ℃～20 ℃ usually.In order to keep gain medium under this temperature, when especially the strong laser medium of mixing the Yb active ions of temperature influence being carried out the heavy pumping radiation, good refrigeration and heat radiation are necessary.Otherwise laser material can absorb a large amount of pumping radiations and produce serious thermal effect, and laser beam quality is descended, and power output reduces, and brightness reduces.In the thin-disc laser system, gain medium is directly installed on the heat radiation refrigerator usually.For the conduction cooling that guarantees that laser diode is good, thereby require to realize between laser medium and the radiator that close close-fitting has good thermo-contact.The traditional cold radiator cooler adopts the mechanical clamping technology of manual hard clamping of a plurality of screws or spring washer usually.Because the laser medium of thin-sheet laser as thin as a wafer, usually have only 200～400 μ m, adopt the method for the manual clamping of multiple spot screw, as shown in Figure 2, hard Mechanical Contact between cover plate 1 and the gain medium 8, uneven stressed between different screws 4 and the cover plate 1 very easily with gain medium 8 crushing; And adopt the method for spring washer clamping, and as shown in Figure 3, cover plate 1 is fixed on the red copper clamp 6 by screw 4, place the compressive deformation of spring washer 11 therebetween and force in white stone window flat board 7.This method is difficult to material is clamped, inaccessible good thermo-contact between gain medium 8, indium sheet 9 and the red copper clamp 6, and a large amount of heat deposition has restricted the development of thin-sheet laser to high light large power.
Summary of the invention
The object of the invention is to provide a kind of gain medium cooling clamping device of thin-sheet laser, to overcome hard mechanical damage that the thin-disc laser medium causes because of the clamping unbalance stress and because clamping tightly can't effectively not cool off the thermal effect problem that causes, make thin-disc laser can obtain even clamping and good cooling effect, to be applicable to the needs of all solid state thin-sheet laser development of high brightness.
The technology of the present invention solution is as follows:
A kind of laser medium cooling device of thin-sheet laser, comprise the semiconductor thermoelectric refrigeration sheet, gain medium, white stone window flat board and anchor clamps, it is characterized in that described anchor clamps are one flat to have its mouth for the dull and stereotyped rail plate that slides of white stone window to have externally threaded red copper clamp in discoid, by fixed screw described red copper clamp is fixed on the described semiconductor thermoelectric refrigeration sheet, the interior end of this red copper clamp, also have a thin indium metal layer, in this red copper clamp, set gradually described gain medium on the described thin indium metal layer, white stone window flat board, miniature annular seal hydraulic pressure bag, internal thread spinning then that annular is with cover is at the external screw thread of described red copper clamp and the described miniature annular seal hydraulic pressure bag that applies pressure to, by this miniature annular seal hydraulic pressure bag equably the application of force with described white stone window flat board, gain medium is pressed on the described thin indium metal layer, and described miniature annular seal hydraulic pressure bag is circumscribed with a hydraulic ga(u)ge.
Described hold-down screw has a plurality of, and equal circumference is evenly distributed to be fixed on described red copper clamp on the described semiconductor thermoelectric refrigeration sheet.
The thickness of described indium layer is less than 30 microns.
Described white stone window flat board two-sided is coated with all anti-reflection broad-band transparence-increased film of pumping wavelength and optical maser wavelength and is installed on the rail plate.
Technique effect of the present invention:
Its internal thread of described annular cover plate cooperates with the external screw thread of red copper clamp, along the described annular cover plate of screw thread rotation, its cover plate can be pushed ahead equably, and the miniature ring-type hydraulic pressure that applies pressure to is wrapped, and can apply rational pressure to miniature ring-type hydraulic pressure bag in conjunction with hydraulic ga(u)ge.
Described hold-down screw has a plurality of, and equal circumference ground is arranged red copper clamp is fixed on the refrigerating plant, and uniform force application is in conjunction with tight.
The two-sided of described white stone window flat board is coated with pumping wavelength and all anti-reflection broad-band transparence-increased film of optical maser wavelength, is installed on the rail plate, advanced to laser medium equably by the hydraulic pressure bag to compress.
Described indium layer, thickness be less than 30 microns, and be thin and cover uniformly between red copper clamp and the laser medium, and soft indium layer has played good cushioning effect to hard contact between the two, makes thermo-contact good.
The present invention comes the cooling device of clamping thin-disc laser medium in conjunction with hydraulic means and spiral cover plate, can effectively overcome the defective of technology formerly, be adjacent to heat sink with making thin-disc laser homogeneous media close-fitting, thereby reach good heat conduction and cooling effect, to realize the high power laser output of high optical efficiency and good beam quality.
Description of drawings
Fig. 1 is the laser medium cooling device structural representation of thin-sheet laser of the present invention.
Fig. 2 is the manual hard mechanical clamp fixing apparatus structural representation of existing a plurality of screw;
Fig. 3 is the apparatus structure schematic diagram of existing spring washer clamping.
Embodiment
The present invention is further illustrated with enforcement below in conjunction with accompanying drawing.
See also Fig. 1 earlier, Fig. 1 is the laser medium cooling device structural representation of thin-sheet laser of the present invention.As seen from the figure, the laser medium cooling device of thin-sheet laser of the present invention, comprise semiconductor thermoelectric refrigeration sheet 10, gain medium 8, white stone window dull and stereotyped 7 and anchor clamps 6, it is characterized in that described anchor clamps 6 are one flat to have its mouth of the rail plate 5 that slides for white stone window dull and stereotyped 7 to have externally threaded red copper clamp 6 in discoid, by hold-down screw 4 described red copper clamp 6 is fixed on the described semiconductor thermoelectric refrigeration sheet 10, the interior end of this red copper clamp 6, also have a thin indium metal layer 9, in this red copper clamp 6, set gradually described gain medium 8 on the described thin indium metal layer 9, white stone window flat board 7, miniature annular seal hydraulic pressure bag 2, then with the internal thread spinning of annular with cover 1 at the external screw thread of described red copper clamp 6 and the described miniature annular seal hydraulic pressure bag 2 that applies pressure to, by this miniature annular seal hydraulic pressure bag 2 equably the application of force with described white stone window flat board 7, gain medium 8 is pressed on the described thin indium metal layer 9, and described miniature annular seal hydraulic pressure bag 2 is circumscribed with a hydraulic ga(u)ge 3.
Described hold-down screw 4 has a plurality of, and equal circumference is evenly distributed to be fixed on described red copper clamp 6 on the described semiconductor thermoelectric refrigeration sheet 10.The thickness of described indium layer 9 is less than 30 microns.Described white stone window flat board 7 two-sided is coated with all anti-reflection broad-band transparence-increased film of pumping wavelength and optical maser wavelength and is installed on the rail plate 5.
By the miniature sealed hydraulic bag 2 of spiral cover plate 1 horizontal sliding, institute's applied pressure evenly is delivered to white stone window flat board 7 and makes it to press laser medium 8, and by being connected to the hydraulic ga(u)ge 3 real-time sizes of exerting pressure of monitoring that hydraulic pressure is wrapped, thereby make the thin-disc laser medium can either closely contact the heat sink anchor clamps 5 of red copper equably, can not crush again, reach good heat conduction and cooling effect, and then realize the output of high light large power laser.
Claims (3)
1. the laser medium cooling device of a thin-sheet laser, comprise semiconductor thermoelectric refrigeration sheet (10), gain medium (8), white stone window flat board (7) and anchor clamps (6), it is characterized in that described anchor clamps (6) are flat red copper clamps (6) that the rail plate (5) that slides for white stone window flat board (7) is arranged in discoid, the mouth of these anchor clamps has external screw thread, by hold-down screw (4) described red copper clamp (6) is fixed on the described semiconductor thermoelectric refrigeration sheet (10), the interior end of this red copper clamp (6), also have a thin indium metal layer (9), in this red copper clamp (6), set gradually described gain medium (8) on the described thin indium metal layer (9), white stone window flat board (7), miniature annular seal hydraulic pressure bag (2), then with the internal thread spinning of annular (1) with cover at the external screw thread of described red copper clamp (6) and the described miniature annular seal hydraulic pressure bag (2) that applies pressure to, by this miniature annular seal hydraulic pressure bag (2) equably the application of force with described white stone window flat board (7), gain medium (8) is pressed on the described thin indium metal layer (9), described miniature annular seal hydraulic pressure bag (2) is circumscribed with a hydraulic ga(u)ge (3), and the thickness of described indium layer (9) is less than 30 microns.
2. the laser medium cooling device of thin-sheet laser according to claim 1, it is a plurality of to it is characterized in that described hold-down screw (4) has, and equal circumference is evenly distributed to be fixed on described red copper clamp (6) on the described semiconductor thermoelectric refrigeration sheet (10).
3. the laser medium cooling device of thin-sheet laser according to claim 1, what it is characterized in that described white stone window flat board (7) two-sidedly is coated with all anti-reflection broad-band transparence-increased film of pumping wavelength and optical maser wavelength and is installed on the rail plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101120247A CN100379100C (en) | 2005-12-27 | 2005-12-27 | Laser medium cooling device of thin laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101120247A CN100379100C (en) | 2005-12-27 | 2005-12-27 | Laser medium cooling device of thin laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1794522A CN1794522A (en) | 2006-06-28 |
| CN100379100C true CN100379100C (en) | 2008-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101120247A Expired - Fee Related CN100379100C (en) | 2005-12-27 | 2005-12-27 | Laser medium cooling device of thin laser |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100581008C (en) * | 2007-11-30 | 2010-01-13 | 西安电子科技大学 | Cooling method for crystal end face in laser diode pump solid state laser device |
| CN102468597B (en) * | 2010-11-11 | 2013-07-17 | 北京国科世纪激光技术有限公司 | Clamping tool |
| CN102544992A (en) * | 2011-02-25 | 2012-07-04 | 北京国科世纪激光技术有限公司 | Laser crystal clamp and method for clamping laser crystal |
| CN106571579B (en) * | 2015-10-13 | 2019-02-26 | 中国科学院大连化学物理研究所 | A kind of adjustable disc laser crystal of piston type is cooling to be referred to |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176324A (en) * | 1976-09-20 | 1979-11-27 | Jersey Nuclear-Avco Isotopes, Inc. | High performance dye laser and flow channel therefor |
| US6385220B1 (en) * | 1999-04-21 | 2002-05-07 | Gsi Lumonics Inc. | Laser clamping assembly and method |
| CN2599843Y (en) * | 2003-02-21 | 2004-01-14 | 华中科技大学 | Full solid-state solid laser |
| CN1604406A (en) * | 2004-11-02 | 2005-04-06 | 中国科学院上海光学精密机械研究所 | Semiconductor laser side-face pumping solid strip laser |
| CN1671016A (en) * | 2005-04-18 | 2005-09-21 | 北京工业大学 | Side surface pumped thin disk laser and method for making same |
| CN2862438Y (en) * | 2005-12-27 | 2007-01-24 | 中国科学院上海光学精密机械研究所 | Laser medium cooling means for flake laser |
-
2005
- 2005-12-27 CN CNB2005101120247A patent/CN100379100C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176324A (en) * | 1976-09-20 | 1979-11-27 | Jersey Nuclear-Avco Isotopes, Inc. | High performance dye laser and flow channel therefor |
| US6385220B1 (en) * | 1999-04-21 | 2002-05-07 | Gsi Lumonics Inc. | Laser clamping assembly and method |
| CN2599843Y (en) * | 2003-02-21 | 2004-01-14 | 华中科技大学 | Full solid-state solid laser |
| CN1604406A (en) * | 2004-11-02 | 2005-04-06 | 中国科学院上海光学精密机械研究所 | Semiconductor laser side-face pumping solid strip laser |
| CN1671016A (en) * | 2005-04-18 | 2005-09-21 | 北京工业大学 | Side surface pumped thin disk laser and method for making same |
| CN2862438Y (en) * | 2005-12-27 | 2007-01-24 | 中国科学院上海光学精密机械研究所 | Laser medium cooling means for flake laser |
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| CN1794522A (en) | 2006-06-28 |
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Granted publication date: 20080402 Termination date: 20111227 |