CN100435434C - Disk laser - Google Patents
Disk laser Download PDFInfo
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- CN100435434C CN100435434C CNB2005100311196A CN200510031119A CN100435434C CN 100435434 C CN100435434 C CN 100435434C CN B2005100311196 A CNB2005100311196 A CN B2005100311196A CN 200510031119 A CN200510031119 A CN 200510031119A CN 100435434 C CN100435434 C CN 100435434C
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- laser
- disk
- disc
- module
- pumping source
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Abstract
The present invention discloses a disk laser which comprises a disk module arranged on a laser base board and pumping source modules, wherein the pumping source modules are placed at the two sides of the disk module in parallel, the two ends of the laser are provided with a front and a rear end covers, and the upper part of the laser is provided with a cover plate; the disk module comprises two disks which are placed in parallel, a space between the two disks forms an aircool channel, a disk bracket is arranged between the two parallel disks, the upper part and the lower part are respectively provided with a disk bottom plate and a disk top cover, and two air nozzles of the disk module are respectively arranged on the disk bottom plate and the disk top cover. The disk laser of the present invention can cause that pumping light can be fully absorbed, the pumping efficiency of the laser is greatly improved, as the disk self is formed with the cooling channel, the cooling complexity is reduced, and the cost is reduced.
Description
Technical field
The present invention is mainly concerned with disc solid state laser field, refers in particular to a kind of disk laser.
Background technology
In the last few years, the disc solid state laser had obtained bigger development.The disc shaped laser amplifier of Lao Lunsi-livermore national laboratory development for example, in the middle of the pumping source of parallel placement, be provided with several discs, disc is placed on the base plate with Brewster's angle, become single W shape, the both sides of disc are respectively equipped with silica glass window in order to form the cooling duct in the laser amplifier, are coated with anti-reflection film on the silica glass window in order to increase the transmissivity of pump light.Wherein, disc is placed with Brewster's angle, and the surface finish quality is good, and it is minimum that scattering loss is dropped to.Pumping source is photoflash lamp or diode array, and pump optical radiation is to the surface of disc, and is vertical with the direction of laser beam, therefore can think that disc is face pumping.This pumping can make laser beam produce gain uniformly in clear aperature; What is more important, the heating of the side of disc are uniformly, thereby the transverse temperature gradient also is minimum.Liquid nitrogen freezes to disc through the valve cooling duct of flowing through. and the explosion-proof quartz glass forms that the outside of pumping source is provided with prevent that the lamp blast from causing damage to disc.Two end faces of laser are respectively equipped with laser window, can play the dustproof effect, and laser is provided with top cover from the laser window outgoing above the laser.Therefore but this structure has improved cost owing to installed quartz window additional and the plating anti-reflection film has increased the complexity of technology, and caused Installation and Debugging relatively difficulty, complex structure, be unfavorable for densification; The heat that window encapsulation simultaneously brings distorts and reflection loss, greatly reduces the beam quality and the light extraction efficiency of laser; And, producing self-oscillation in order to prevent disk laser, the medium doping content is generally all lower, so the one way of its pump light of disk laser of single W type design absorbs also lower.
Summary of the invention
The technical problem to be solved in the present invention just is: at the technical problem that prior art exists, provide a kind of can make the pumping efficiency that pump light fully absorbed, can improve greatly laser and form the cooling duct by disc self can reduce the complexity of cooling off, the disk laser that reduces cost.
In order to solve the problems of the technologies described above, the solution that the present invention proposes is: a kind of disk laser, it comprises disk module and the pumping source module that is installed on the laser base board, the pumping source module is placed in parallel in the both sides of disk module, and before the two ends of this laser are provided with, rear end cap, the top of laser then is provided with cover plate, it is characterized in that: described disk module comprises the disc of two parallel placements, two middle spaces of disc form the air cooling passage, be provided with disk holder between two parallel discs, on, next disc base plate and the disc top cover of being respectively equipped with, two valves of disk module are installed in respectively on disc base plate and the disc top cover, described disk module is W shape and is arranged on the laser base board, and each disk module joins end to end by valve, forms a coherent airtight big air cooling passage; Offer the pore that several can allow gas flow into the air cooling passage on described disc base plate and the disc top cover, the liquid nitrogen that enters valve flows into the middle air cooling passage of two discs of disk module through described pore.
Described pumping source module comprises pumping source, and the outside of pumping source is provided with water pipe, and water pipe is fixed by the water pipe sealing clamp, and the outer wall of water pipe and pumping source constitutes water-cooling channel; The two ends of pumping source are provided with the water-cooling channel that two laser pump cavity end caps are used for fixing xenon lamp and water pipe formation; Outermost at pumping source is provided with explosion-proof quartz glass forms simultaneously, and these glass forms fix by flat.
The groove that the while is placed disc at disk holder, disc base plate, disc top cover on the described disk module has two long and narrow grooves again.
Two valves on the described disk module are distributed on the diagonal of disk module.
Compared with prior art, advantage of the present invention just is:
1, disk laser of the present invention forms the cooling duct by disc self, need not to encapsulate with quartz window again, and Installation and Debugging are simple, has reduced the complexity of cooling, has reduced cost;
2, disk laser of the present invention adopts the disc mentality of designing of two W types, pump light is fully absorbed, thereby improved the pumping efficiency of laser greatly.Two W type designs have reduced to have improved the beam quality and the light extraction efficiency of laser because the heat that the window encapsulation brings distorts and reflection loss under the situation of identical gain length.The design of two W types under the situation of identical gain length, make the volume of laser reduced near half, help the densification and the modularization of laser.
Description of drawings
Fig. 1 is a perspective view of the present invention;
Fig. 2 is the schematic top plan view after the present invention opens the disk laser top cover;
Fig. 3 is the perspective view of disk module of the present invention;
Fig. 4 is that the master of disk module of the present invention looks schematic diagram;
Fig. 5 is the A-A face cross-sectional schematic of Fig. 4;
Fig. 6 is the structural representation of pumping source module of the present invention.
Marginal data
1, laser cover plate 2, laser base board
3, laser feet 4, laser front end housing
5, laser rear end cap 6, laser side plate
7, disk module
71, disc top cover 72, disc base plate
73, disc 74, disk holder
8, pumping source module
81, sealing ring 82, flat
83, glass forms 84, water pipe
85, laser pump cavity 86, water pipe sealing clamp
87, pumping source 88, laser pump cavity end cap
Embodiment
Below with reference to accompanying drawing the present invention is described in further details.
The embodiment of disk laser of the present invention as depicted in figs. 1 and 2, it comprises disk module 7 and the pumping source module 8 that is installed on the laser base board 2, pumping source module 8 is placed in parallel in the both sides of disk module 7, also be provided with laser side plate 6 between pumping source module 8 and the disk module 7, and the two ends of this laser are provided with forward and backward end cap 4,5, forward and backward end cap 4,5 the laser windows of laser as two end faces of laser, laser also is for dustproof from forward and backward end cap 4,5 outgoing of laser so simultaneously.The top of laser then is provided with cover plate 1, and laser base board 2 is provided with laser feet 3, can conveniently regulate laser like this.As Fig. 3, Fig. 4 and disk module 7 shown in Figure 5, it comprises the disc 73 of two parallel placements, the periphery of disc 73 wraps up with metal, two disc 73 middle spaces form air cooling passage 76, be provided with disk holder 74 between two parallel discs 73, on, next disc base plate 72 and the disc top cover 71 of being respectively equipped with, two valves 75 of disk module 7 are installed in respectively on disc base plate 72 and the disc top cover 71, and on disc base plate 72 and disc top cover 71, offer the pore that several can allow gas flow into air cooling passage 76, and two valves 75 are distributed on the diagonal of disk module 7, make like this gas be used for cooling off disc 73 can be evenly slowly pass through disk module 7.Thereby liquid nitrogen enters valve 75 to freeze to disc through the air cooling passage 76 that pore enters between two discs 73.As shown in Figure 2, disk module 7 is W shape and is arranged on the laser base board 2, and each disk module 7 joins end to end by valve 75, forms an airtight air cooling passage.The groove of placing disc 73 at disk holder 74, disc base plate 72, disc top cover 71 simultaneously on the disk module 7 has two long and narrow grooves again, and the periphery of disc 73 also can cool off fully like this.
What as shown in Figure 6, the pumping source in the pumping source module 8 in the present embodiment 87 adopted is xenon lamp.The laser pump cavity 85 of xenon lamp is the form of hyperbolic involute, and the surface is coated with reflectance coating and is used for reflected pump light.The outside of xenon lamp is the water pipe 84 that is made with quartz glass, water pipe 84 is fixing by water pipe sealing clamp 86, the outer wall of water pipe 84 and xenon lamp constitutes the water-cooling channel of xenon lamp, and the two ends of xenon lamp are provided with the cooling duct that two laser pump cavity end caps 88 are used for fixing xenon lamp and water pipe 84 formation; Outermost at pumping source 87 is provided with explosion-proof quartz glass forms 83 simultaneously, and to prevent xenon lamp blast damage disc 73, glass forms 83 fix by flat 82; The two ends of pumping source module 8 utilize sealing ring 81 to play sealing function simultaneously, and anti-sealing overflows.
Operation principle: place the semi-transparent semi-reflecting outgoing mirror of one side at front end housing 4 places of laser, place a total reflective mirror at rear end cap 5 places, so just constituted the resonant cavity of laser.The pump light that xenon flash lamp sends or directly incide on the disc 73 through quartz glass forms 83, perhaps after assembling, laser pump cavity 85 is radiated on the disc 73, the pump light that disc 73 absorbs xenon lamp produces stimulated emission, the initially signal that forms laser is not to introduce from the outside, but being derived from spontaneous radiation, each photon of spontaneous radiation is concerning the atom that is in energy level, be exactly an external signal that causes stimulated emission, make spontaneous radiation be amplified.Light wave is constantly travelled to and fro between between two speculums of resonant cavity, reflects owing to air is different with the disc refractive index during light wave process disc 73, and the endovenous laser power density is constantly strengthened, and is stabilized at last on a certain particular value; Part light is exported through outgoing mirror, and part light is reflected back toward disc 73 and proceeds to amplify, thereby can guarantee that laser exports continuously.Optical resonator makes laser produce positive feedback, plays a part to prolong gain media, and the effect of the control beam direction of propagation is arranged, thereby make laser have good directivity.In going out photoreduction process, disc is not freezed, but xenon lamp is carried out water-cooled always, in time take away the used heat that xenon lamp produces, otherwise xenon lamp bursts easily.Bright dipping is carried out liquid nitrogen refrigerating apace to disk module after finishing, and makes disc return to the state of being born rapidly, thus bright dipping next time.
Claims (6)
1, a kind of disk laser, it comprises disk module (7) and the pumping source module (8) that is installed on the laser base board (2), pumping source module (8) is placed in parallel in the both sides of disk module (7), it is characterized in that: described disk module (7) comprises the disc (73) of two parallel placements, space in the middle of two discs (73) forms air cooling passage (76), be provided with disk holder (74) between two parallel discs (73), on two parallel discs (73), next disc base plate (72) and the disc top cover (71) of being respectively equipped with, two valves (75) of disk module (7) are installed in respectively on disc base plate (72) and the disc top cover (71), described disk module (7) is W shape and is arranged on the laser base board (2), each disk module (7) joins end to end by valve (75), forms the airtight big air cooling passage that links up; Offer the pore that several can allow gas flow into air cooling passage (76) on described disc base plate (72) and the disc top cover (71), the liquid nitrogen that enters valve (75) flows into the middle air cooling passage (76) of two discs (73) of disk module (7) through described pore.
2, disk laser according to claim 1, it is characterized in that: described pumping source module (8) comprises pumping source (87), the outside of pumping source (87) is provided with water pipe (84), water pipe (84) is fixing by water pipe sealing clamp (86), and the outer wall of water pipe (84) and pumping source (87) constitutes water-cooling channel; The two ends of pumping source (87) are provided with two laser pump cavity end caps (88) that are used for fixing the water-cooling channel of xenon lamp and water pipe (84) formation; Outermost at pumping source (87) is provided with explosion-proof quartz glass forms (83) simultaneously, and these glass forms (83) fix by flat (82).
3, disk laser according to claim 2 is characterized in that: the two ends of described laser are provided with the forward and backward end cap of laser (4,5), and the top of laser then is provided with laser cover plate (1).
4, disk laser according to claim 2 is characterized in that: described laser base board (2) is provided with laser feet (3).
5, disk laser according to claim 2 is characterized in that: described disk module (7) upward has two long and narrow grooves again at the groove of disk holder (74), disc base plate (72), disc top cover (71) placement disc (73) simultaneously.
6, disk laser according to claim 2 is characterized in that: two valves (75) on the described disk module (7) are distributed on the diagonal of disk module (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100311196A CN100435434C (en) | 2005-01-07 | 2005-01-07 | Disk laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100311196A CN100435434C (en) | 2005-01-07 | 2005-01-07 | Disk laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1632992A CN1632992A (en) | 2005-06-29 |
| CN100435434C true CN100435434C (en) | 2008-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100311196A Active CN100435434C (en) | 2005-01-07 | 2005-01-07 | Disk laser |
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| Country | Link |
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| CN (1) | CN100435434C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719618B (en) * | 2009-12-23 | 2011-03-30 | 清华大学 | Device for improving asymmetric thermal focal distances of asymmetric heating panel strip-shaped laser |
| CN104617469B (en) * | 2015-02-13 | 2017-06-09 | 中国工程物理研究院激光聚变研究中心 | A kind of automatic pressure-balancing laser head assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711790A (en) * | 1971-04-07 | 1973-01-16 | F Gans | Segmented glass laser |
| JPH05102566A (en) * | 1991-10-09 | 1993-04-23 | Kimmon Electric Co Ltd | Solid-state laser amplifier |
| US20020110166A1 (en) * | 2001-02-14 | 2002-08-15 | Filgas David M. | Method and system for cooling a laser gain medium |
| CN1547294A (en) * | 2003-12-05 | 2004-11-17 | 清华大学 | Dual wavelength combination pumping method for disk type laser gain medium and its gain module |
| CN2765347Y (en) * | 2005-01-18 | 2006-03-15 | 中国人民解放军国防科学技术大学 | Disk sheet laser |
-
2005
- 2005-01-07 CN CNB2005100311196A patent/CN100435434C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711790A (en) * | 1971-04-07 | 1973-01-16 | F Gans | Segmented glass laser |
| JPH05102566A (en) * | 1991-10-09 | 1993-04-23 | Kimmon Electric Co Ltd | Solid-state laser amplifier |
| US20020110166A1 (en) * | 2001-02-14 | 2002-08-15 | Filgas David M. | Method and system for cooling a laser gain medium |
| CN1547294A (en) * | 2003-12-05 | 2004-11-17 | 清华大学 | Dual wavelength combination pumping method for disk type laser gain medium and its gain module |
| CN2765347Y (en) * | 2005-01-18 | 2006-03-15 | 中国人民解放军国防科学技术大学 | Disk sheet laser |
Non-Patent Citations (2)
| Title |
|---|
| 高亮度高平均功率固体激光器技术评述. 唐淳.量子电子学报，第22卷第4期. 2005 |
| 高亮度高平均功率固体激光器技术评述. 唐淳.量子电子学报，第22卷第4期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1632992A (en) | 2005-06-29 |
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