CN105610045A - Temperature control device for laser resonant cavity - Google Patents
Temperature control device for laser resonant cavity Download PDFInfo
- Publication number
- CN105610045A CN105610045A CN201610179169.7A CN201610179169A CN105610045A CN 105610045 A CN105610045 A CN 105610045A CN 201610179169 A CN201610179169 A CN 201610179169A CN 105610045 A CN105610045 A CN 105610045A
- Authority
- CN
- China
- Prior art keywords
- crystal
- heater
- attemperating unit
- furnace body
- laserresonator
- 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.)
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Classifications
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/131—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1317—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the temperature
-
- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/136—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling devices placed within the cavity
- H01S3/137—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling devices placed within the cavity for stabilising of frequency
Abstract
The invention provides a temperature control device for a laser resonant cavity. The temperature control device comprises a furnace body placed in the variable frequency laser resonant cavity and a base; a crystal carrier is arranged at the top of the furnace body; nonlinear crystal is pressed by arranging a wedge-shaped sliding block on the side of the crystal carrier and arranging an elastic pressing plate at the top of the crystal carrier, so that the mechanical stability of the crystal is ensured; and the overall structure is a sandwich structure, the furnace body is in the center, a heat insulation material is filled on four sides, and the exposed portion of the furnace body is only a light transmission portion, so that heat exchange between the furnace body and the outside is reduced, and the thermal balance of the crystal is ensured. By adopting a low-power heating fuse, the heating speed is slowed down, temperature oscillation caused by temperature oversaturation is avoided, and the size of the furnace body is reduced; and the front area of the furnace body is matched with the crystal surface, so that most of the heat is transferred to the crystal. The temperature of the crystal can be accurate to 0.05 DEG C upon test. The heat insulation layer is subjected to light transmission treatment, so that the device is prevented from shading light in the folded resonant cavity, and the device is applicable to multiple laser resonant cavities.
Description
Technical field
The present invention relates to nonlinear optics laser frequency field, be specifically related to one and be positioned in frequency conversion laser resonator for fixingAnd control the attemperating unit of laser frequency crystal temperature effect.
Background technology
In nonlinear optics, nonlinear crystal is the core devices of laser frequency, and laser level enters by crystal and then to laserRow wavelength transforms, and controls the diverse location of light by crystal and corresponding temperature and realize the frequency conversion output of different wave length laser, oneAs 1 degree Celsius of variations in temperature, Emission Lasers wavelength can change 0.15nm. Therefore need a kind of temperature control dress in the middle of laser frequency technologyPut and fix blessing nonlinear crystal, and crystal is carried out to temperature control processing. Laser frequency crystal is position in laser frequency resonatorDeformation and variations in temperature can produce a very large impact the frequency conversion output of laser, and laser frequency resonator is varied again, Yi ZhonggaoMechanical stability, temperature-control performance are good and to accommodate attemperating unit applicable to the crystal of different structure resonator essential.
Attemperating unit body of heater volume is in the market large, and is not suitable for multiple laserresonator, and crystal fixed form is single,Be not suitable for Multiple Type thickness crystal, mechanical stability is poor, is subject to temperature deformation impact.
Summary of the invention
Goal of the invention: in order to solve above-mentioned the deficiencies in the prior art, the invention provides a kind of temperature control for laserresonatorDevice, body of heater volume is little, good mechanical stability, and temperature control accurate, ability are strong and be applicable to multiple laserresonator.
Technical scheme: a kind of attemperating unit for laserresonator, comprise the body of heater that is placed in frequency conversion laser resonator andBase; The sidewall of described body of heater is provided with through hole and groove, and the top of described body of heater is provided with carries brilliant platform, and the sidewall of described year brilliant platform is establishedHave convex baffle plate, within described year, brilliant platform is provided with wedge block and crystal container cavity, and the wedge shape limit of described wedge block is arranged on closeOne side of described crystal container cavity; The top of described wedge block and described crystal container cavity is equipped with elastic pressuring plate, described elasticityThe boss of the side of compressing tablet and described convex baffle plate is equipped with, and attemperating unit overall structure is sandwich structure, and center is body of heater,Surrounding is heat-barrier material, and the exposed position of body of heater is logical light part.
Further, surrounding and the top of described body of heater are provided with thermal insulation board, and described thermal insulation board is fixedly connected on described base.
Further, a sidewall of described body of heater is provided with step, and the bottom of described step is provided with through hole and through hole side is provided with recessedGroove; Described through hole is used for placing heating rod, and heating rod gos deep in body of heater by through hole, the electric heating of two groups of parallel connections of coiling on heating rodSilk; Described groove is used for placing thermistor, and for detection of the temperature of body of heater material, the material of body of heater and placement thermistor isBrass or red metal.
Further, described body of heater carries brilliant platform entire area and is all used for contacting with crystal, and the crystal of described body of heater, described body of heater holdsThe cavity area of receiving is identical with crystalline areas, and wedge block and elastic pressuring plate elasticity are close to and are wrapped crystal; Wedge block and elasticity are pressedSheet material is all the easy heat-conductings such as brass.
Further, described thermal insulation board two parts are all spill and spill inwall is made as wave structure containing upper cover inside.
Further, described thermal insulation board is the low material of thermal conductivity; Resistive heater in described body of heater is two groups of resistance in parallelSilk; Adopt one group of small-power resistance silk to use when being incubated.
Further, described body of heater is fixedly installed on described base by isolated tube.
Further, the pipe that described isolated tube is hollow, is screwed and is arranged on described base.
Further, attemperating unit thermal insulation board corner is provided with light hole, has offered path channels.
Beneficial effect: the invention provides a kind of attemperating unit for laserresonator, by wedge being set in a year brilliant platform sideShape slide block, top arrange elastic pressuring plate and push tight nonlinear crystal, have ensured the mechanical stability of crystal; Carry brilliant platform simultaneously,Wedge block, elastic pressuring plate is the high material of thermal conductivity, makes crystal surrounding all have thermal source heating, has reduced crystal and extraneous heatExchange. Adopt undersized resistive heater, avoided heating power large, the temperature that causes heating supersaturation to bring fluctuates up and down,Reduce body of heater volume; Thermal insulation layer has done logical light processing, has avoided device to have light-baffling phenomena at fold resonator, is applicable to multipleLaserresonator.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is body of heater syndeton schematic diagram of the present invention;
Fig. 3 is furnace binding schematic diagram of the present invention;
Fig. 4 is the internal structure schematic diagram of thermal insulation board of the present invention;
Fig. 5 is thermal insulation board lid internal structure schematic diagram of the present invention;
Fig. 6 is the interior lights paths schematic diagram of attemperating unit of the present invention;
Wherein, figure a is straight chamber access diagram, and figure b is ring resonator access diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 1, a kind of attemperating unit for laserresonator, comprises the body of heater being placed in frequency conversion laser resonator1, base 2 and thermal insulation board 4.
As shown in Figure 2, body of heater 1 is fixedly installed on base 2 by isolated tube 3, and isolated tube 3 plays to support to body of heater 1 and doesWith, the pipe that isolated tube 3 is hollow, is screwed and is arranged on base 2.
As shown in Figure 3, the top of body of heater 1 is provided with carries brilliant platform 8, and the sidewall that carries brilliant platform 8 is provided with convex baffle plate 9, carries on brilliant platform 8Be provided with wedge block 10 and crystal container cavity 11, the wedge shape limit of wedge block 10 is arranged on the side near crystal container cavity 11,Crystal container cavity 11 is for placing nonlinear crystal, and entirety wraps crystal, makes crystal surrounding all have thermal source, avoided crystal withExtraneous exchange heat.
The top of wedge block 10 and crystal container cavity 11 is equipped with elastic pressuring plate 12, and elastic pressuring plate 12 (is placed in thermal insulation board lidInner) side and the boss of convex baffle plate 9 be equipped with. Wedge block 10 and elastic pressuring plate 12 are for the non-line of fixing blessingProperty crystal, pushes tight nonlinear crystal, has ensured the mechanical stability of crystal. For anti-locking apparatus keeps off in annular chamberOptical phenomenon, arranges and carries the convex baffle plate 9 that brilliant platform one side block body is slimline, has avoided light-baffling phenomena.
A sidewall of body of heater 1 is provided with step 5, and the bottom of step 5 is provided with through hole 6 and through hole side is provided with groove 7; Through hole 6Be used for placing heating rod, heating rod gos deep in body of heater by through hole, the heating wire of two groups of parallel connections of coiling on heating rod; Groove 7 useIn placing thermistor, for detection of the temperature of body of heater material, the material of body of heater and placement thermistor is that brass or red metal etc. are easyHeat conduction, be difficult for the material of deformation.
The surrounding of body of heater 1 and top are provided with thermal insulation board 4, and thermal insulation board 4 is fixedly connected on base 2, and thermal insulation board top is offered logicalUnthreaded hole, has avoided device to have light-baffling phenomena at fold resonator. Base 2 is for hard material making, as duralumin; On base 2, establishHave screwed hole, base 2 interconnects by screw and thermal insulation board 4, body of heater 1.
Between body of heater 1 and thermal insulation board 4, leave space. Thermal insulation board 4 is that heat-barrier material is made, as polytetrafluoroethylene (PTFE) etc., for everyThe impact of outside absolutely temperature field on furnace body temperature, reduces exchange heat.
As shown in Figure 4, thermal insulation board 4 inside are spill and spill inwall is made as wave structure, and concave structure can make thermal accumlation,Reduce the impact of extraneous temperature field. The corner location of thermal insulation board 4 is provided with screwed hole 402. Be arranged on the thermal insulation board of body of heater 1 bottomCenter is provided with circular hole 401, and isolated tube 3 connects base 2 through circular hole 401.
In different laserresonators, attemperating unit interior lights paths as shown in Figure 5: wherein, figure a be simple directly chamber,Light path is not folding, and common attemperating unit can meet its instructions for use; Figure b is ring resonator, and attemperating unit design is small and exquisite,And due to light path bending, attemperating unit is provided with light hole in thermal insulation board 4 corners, has offered path channels, has avoided deviceThere is light-baffling phenomena in annular or folding resonator.
The invention provides a kind of attemperating unit for laserresonator, by wedge block, top being set in a year brilliant platform sidePortion arranges elastic pressuring plate and pushes tight nonlinear crystal, has ensured the mechanical stability of crystal; Carry brilliant platform simultaneously, wedge block,Elastic pressuring plate is the high material of thermal conductivity, makes crystal surrounding all have thermal source heating, has reduced crystal and extraneous heat exchange; AdoptUndersized resistive heater, has avoided heating power large, and the temperature that causes heating supersaturation to bring fluctuates up and down; Reduce stoveBody volume; Thermal insulation layer has done through hole, i.e. logical light processing, has avoided device to have light-baffling phenomena at fold resonator. Body of heater volume is little,Simple in structure, good mechanical stability, be applicable to multiple laserresonator.
The above is only the preferred embodiment of the present invention, is noted that for those skilled in the art,Under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as thisBright protection domain.
Claims (10)
1. for an attemperating unit for laserresonator, it is characterized in that: comprise the stove being placed in frequency conversion laser resonatorBody (1) and base (2); The sidewall of described body of heater (1) is provided with through hole (6) and groove (7), the top of described body of heater (1)Portion be provided with carry a brilliant platform (8), described year brilliant platform (8) sidewall be provided with convex baffle plate (9), described year brilliant platform (8) be provided withWedge block (10) and crystal container cavity (11), the wedge shape limit of described wedge block (10) is arranged near described crystal and holdsOne side in chamber (11); The top of described wedge block (10) and described crystal container cavity (11) is equipped with elastic pressuring plate (12),The boss of the side of described elastic pressuring plate (12) and described convex baffle plate (9) is equipped with, and attemperating unit overall structure is Sanming CityControl structure, center is body of heater, and surrounding is heat-barrier material, and the exposed position of body of heater is logical light part.
2. a kind of attemperating unit for laserresonator according to claim 1, is characterized in that: described body of heater (1)Surrounding and top be provided with thermal insulation board (4), described thermal insulation board (4) is fixedly connected on described base (2).
3. a kind of attemperating unit for laserresonator according to claim 1, is characterized in that: described body of heater (1)A sidewall be provided with step (5), the bottom of described step (5) is provided with through hole (6) and through hole side is provided with groove (7);Described through hole (6) is used for placing heating rod, and heating rod gos deep in body of heater by through hole (6), two groups of parallel connections of coiling on heating rodHeating wire; Described groove (7) is for placing thermistor, for detection of the temperature of body of heater material, and body of heater (1) and placingThe material of thermistor is brass or red metal.
4. a kind of attemperating unit for laserresonator according to claim 1, is characterized in that: described body of heaterCarrying brilliant platform entire area is all used for contacting with crystal.
5. a kind of attemperating unit for laserresonator according to claim 4, is characterized in that: described body of heaterCarry brilliant table top long-pending identical with crystalline areas, wedge block and elastic pressuring plate elasticity are close to and are wrapped crystal; Wedge block (10)And elastic pressuring plate (12) material is all the easy heat-conductings such as brass.
6. a kind of attemperating unit for laserresonator according to claim 1, is characterized in that: described thermal insulation board(4) two parts are all spill and spill inwall is made as wave structure containing upper cover (12) inside.
7. a kind of attemperating unit for laserresonator according to claim 1, is characterized in that: in described body of heaterResistive heater be two groups of in parallel resistance wires; Adopt one group of small-power resistance silk to use when being incubated.
8. a kind of attemperating unit for laserresonator according to claim 1, is characterized in that: described body of heater (1)Be fixedly installed on described base (2) by isolated tube (3).
9. a kind of attemperating unit for laserresonator according to claim 8, is characterized in that: described isolated tube(3) be the pipe of hollow, be screwed and be arranged on described base (2).
10. a kind of attemperating unit for laserresonator according to claim 1, is characterized in that: attemperating unitThermal insulation board (4) corner is provided with light hole, has offered path channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610179169.7A CN105610045B (en) | 2016-03-25 | 2016-03-25 | A kind of temperature control device in laser resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610179169.7A CN105610045B (en) | 2016-03-25 | 2016-03-25 | A kind of temperature control device in laser resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105610045A true CN105610045A (en) | 2016-05-25 |
| CN105610045B CN105610045B (en) | 2019-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610179169.7A Active CN105610045B (en) | 2016-03-25 | 2016-03-25 | A kind of temperature control device in laser resonator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109921271A (en) * | 2017-12-13 | 2019-06-21 | 中国科学院大连化学物理研究所 | A kind of adjustable crystal thermostat of mechanical location |
| CN110161726A (en) * | 2019-05-15 | 2019-08-23 | 上海硅酸盐研究所中试基地 | A kind of bridge stabilized quartz radiating block |
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| CN203312263U (en) * | 2013-05-23 | 2013-11-27 | 京东方科技集团股份有限公司 | Tool for locking and attaching encapsulation transistor |
| CN205985739U (en) * | 2016-03-25 | 2017-02-22 | 南京大学 | A temperature control device for among laser resonator |
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Patent Citations (6)
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| CN202168064U (en) * | 2008-10-03 | 2012-03-14 | Cts公司 | Crystal oscillator assembly for heat furnace control |
| US20100296188A1 (en) * | 2009-05-21 | 2010-11-25 | Harland Mark A | Kinematic mirror mount adjustable from two directions |
| CN102570250A (en) * | 2011-04-06 | 2012-07-11 | 北京国科世纪激光技术有限公司 | Optical crystal heat radiation apparatus and optical crystal heat radiation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109921271A (en) * | 2017-12-13 | 2019-06-21 | 中国科学院大连化学物理研究所 | A kind of adjustable crystal thermostat of mechanical location |
| CN110161726A (en) * | 2019-05-15 | 2019-08-23 | 上海硅酸盐研究所中试基地 | A kind of bridge stabilized quartz radiating block |
| CN110161726B (en) * | 2019-05-15 | 2022-07-12 | 上海硅酸盐研究所中试基地 | Bridge type crystal radiating block |
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| CN105610045B (en) | 2019-04-05 |
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