CN108666855A - Laser crystal bilateral temperature regulating device - Google Patents
Laser crystal bilateral temperature regulating device Download PDFInfo
- Publication number
- CN108666855A CN108666855A CN201810820206.7A CN201810820206A CN108666855A CN 108666855 A CN108666855 A CN 108666855A CN 201810820206 A CN201810820206 A CN 201810820206A CN 108666855 A CN108666855 A CN 108666855A
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- CN
- China
- Prior art keywords
- control module
- laser crystal
- temperature control
- crystal
- temperature
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- 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
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0405—Conductive cooling, e.g. by heat sinks or thermo-electric elements
-
- 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
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/042—Arrangements for thermal management for solid state lasers
Abstract
The invention discloses laser crystal bilateral temperature regulating devices, including the upper temperature control module for being respectively arranged at laser crystal both sides, lower temperature control module, and the control system of the semiconductor cooler work for receiving crystal temperature data and the upper temperature control module of driving, lower temperature control module, the present apparatus uses linear regulative mode rather than on-off control mode, output temperature control module uses digital control pattern, can greatly improve the control accuracy of temperature；In a limited space, the gradient of temperature when executing temperature control to laser crystal using the temperature control module of Bilateral Symmetry, realize the refrigerating capacity of double power, while effectively reducing laser crystal work；Modularized design is used for temperature control module, crystal holder, semiconductor cooler, cooled plate multi-part are integrated in one, can conveniently be assembled, is repaired.
Description
Technical field
The invention belongs to field of laser device technology, and in particular to laser crystal bilateral temperature regulating device.
Background technology
TEC thermoelectric cooler is also known as semiconductor cooler, when DC current is by two different loop of conductive material,
The phenomenon that neither endothermic nor exothermic will be generated on node.As peltier effect.TEC Intelligent refrigeration temperature control modules are both that Po Er is utilized
For patch effect to realize refrigeration or heating, it has refrigeration, heating speed fast, noiseless, pollution-free, and control is flexible and convenient, body
The features such as product is small, light-weight, thus be widely applied.A kind of typical TEC single stage thermoelectrics refrigerator is respectively by two
The semi-conducting material of p-type and N-type is constituted, and when a forward current acts on N-type semiconductor, electronics moves on to N-type from P-type semiconductor
Semiconductor, therefore heat is absorbed, the temperature in temperature control face reduces, and heat is distributed by heat sink towards surrounding, the amount of migration of thermal energy
It is directly proportional to the power supply volume of TEC.Change current direction and heat is then transferred to temperature control face from heat sink face from heat sink input, to
The temperature in temperature control face is set to increase.It is the temperature control refrigeration device preferentially selected in the temperature control field TEC of small size.
The running parameter setting of now common TEC refrigeration is dumb, and application cost rises, and control mode switch is more multiple
It is miscellaneous.If there is a change, temperature control parameter changes difficulty to temperature-controlled conditions, and temperature control algorithm can not be changed.In space than narrow
Laser in, the volume location of refrigeration module is also limited by bigger；And the refrigeration module of most of laser crystal
Using unilateral temperature control, crystal can generate certain temperature gradient with becoming larger at a distance from TEC refrigeration modules, work as laser
The bigger phenomenon of power it is more apparent, to influence the optical quality of laser.
Invention content
It is an object of the invention to overcome the deficiencies in the prior art, in a limited space in can be fully to the temperature of crystal
It is controlled, is limited to the structure size of crystal and the heating power of crystal, the present invention provides laser crystal bilateral temperature control
Device realizes the improvement of the temperature gradient caused by due to distance between crystal and refrigeration module using the structure of double thermometric controls.
Laser crystal bilateral temperature regulating device, including it is respectively arranged at the upper temperature control module of laser crystal both sides, lower temperature control
Module, and for receiving crystal temperature data and the semiconductor cooler of upper temperature control module, lower temperature control module is driven to work
Control system, wherein the upper temperature control module includes upper cooled plate, semiconductor-on-insulator refrigerator and upper crystal holder, the lower temperature control
Module includes lower crystal holder, lower semiconductor refrigerator and lower cooled plate, and the control system includes upper temperature probe, lower thermometric
Probe, driving power, PLC and two-way driving plate, driving power are connected with PLC, upper temperature probe and lower temperature probe and PLC phases
Even, PLC is connected with two-way driving plate, and two-way driving plate is respectively connected with the semiconductor-on-insulator refrigerator, lower semiconductor refrigerator.
In the above-mentioned technical solutions, the laser crystal section is square.
In the above-mentioned technical solutions, the upper temperature control module and lower temperature control module are set on pedestal, are provided on pedestal
Screw hole for fixing.
In the above-mentioned technical solutions, it is provided with shell outside the upper temperature control module and lower temperature control module.
In the above-mentioned technical solutions, the upper temperature control module and lower temperature control module are arranged symmetrically.
In the above-mentioned technical solutions, the upper crystal holder is close to close the setting of laser crystal profile, is located at laser crystal
Semiconductor-on-insulator refrigerator is arranged in the top of upper crystal holder in top, and upper cooled plate is arranged in the top of semiconductor-on-insulator refrigerator, on
The heat sink of semiconductor cooler is in contact with upper cooled plate up.
In the above-mentioned technical solutions, the lower crystal holder is close to close the setting of laser crystal profile, is located at laser crystal
Lower semiconductor refrigerator is arranged in the lower section of lower crystal holder in lower part, and lower cooled plate is arranged in the lower section of lower semiconductor refrigerator, under
The heat sink of semiconductor cooler is in contact with lower cooled plate down.
In the above-mentioned technical solutions, the upper cooled plate and lower cooled plate are respectively communicated with cooling water pipe.
In the above-mentioned technical solutions, it is provided in the upper cooled plate and lower cooled plate for being connect with cooling water pipe
Fast water collecting nozzle.
In the above-mentioned technical solutions, the upper cooled plate, semiconductor-on-insulator refrigerator and upper crystal holder are combined as a whole
To facilitate installation.
In the above-mentioned technical solutions, the lower cooled plate, lower semiconductor refrigerator and lower crystal holder are combined as a whole
To facilitate installation.
In the above-mentioned technical solutions, the PLC connections are used for the touch screen of operation and control.
The operational process of laser crystal bilateral temperature regulating device, as described below：
By the temperature of upper temperature probe and lower temperature probe acquisition laser crystal both sides, temperature data is transmitted to PLC, is led to
PLC control two-way driving plates are crossed, adjustment driving power output is that electric current drives semiconductor-on-insulator refrigerator and lower semiconductor refrigeration
Device carries out the transfer of heat, and the heat on metal crystal holder is transferred to cooled plate, is shifted heat by cooled plate
Release.
The advantages of the present invention are：
1, due to using linear regulative mode rather than on-off control mode, output temperature control module to use digital control mould
Formula can greatly improve the control accuracy of temperature, and the control accuracy of original temperature is increased to 0.1 DEG C.
2, in a limited space, temperature control is executed to laser crystal using the temperature control module of Bilateral Symmetry, realized double
The refrigerating capacity of power, while effectively reducing the gradient of temperature when laser crystal works.
3, modularized design is used for temperature control module, crystal holder, semiconductor cooler, cooled plate multi-part is integrated
It in one, can conveniently be assembled, be repaired.
Description of the drawings
Fig. 1 is temperature regulating device control system connection diagram.
Fig. 2 is temperature regulating device structural schematic diagram.
Wherein：1 is touch screen, and 2 be PLC, and 3 be driving power, and 4 be two-way driving plate, and 5 be temperature regulating device, and 6 be shell, 7
For upper cooled plate, 8 be semiconductor-on-insulator refrigerator, and crystal holder on 9,10 be laser crystal, and 11 be lower crystal holder, and 12 be lower half
Conductor refrigerator, 13 be lower cooled plate, and 14 be pedestal, and 15 be lower temperature probe, and 16 be upper temperature probe, and 17 be fast water collecting nozzle.
It for those of ordinary skill in the art, without creative efforts, can be according to above attached
Figure obtains other relevant drawings.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, furtherly with reference to specific embodiment
Bright technical scheme of the present invention.
Each component source used in following embodiment：
Semiconductor cooler (semiconductor-on-insulator refrigerator, lower semiconductor-on-insulator refrigerator) is purchased from scientific and technological (Xiamen) the limited public affairs in roc south
Department.
Cooled plate (upper cooled plate, lower cooled plate) is purchased from Shanghai WTL Thermal Technology INC.
Crystal holder (upper crystal holder, lower crystal holder) is that copper processed according to laser crystal is made.
Temperature probe (upper temperature probe, lower temperature probe) is purchased from Tai Shite Science and Technology Co., Ltd. of Shenzhen.
Embodiment 1
Laser crystal bilateral temperature regulating device, including it is respectively arranged at the upper temperature control module of laser crystal both sides, lower temperature control
Module, and for receiving crystal temperature data and the semiconductor cooler of upper temperature control module, lower temperature control module is driven to work
Control system, wherein the upper temperature control module includes upper cooled plate 7, semiconductor-on-insulator refrigerator 8 and upper crystal holder 9, under described
Temperature control module includes lower crystal holder 11, lower semiconductor refrigerator 12 and lower cooled plate 13, and the control system includes upper thermometric
Probe 16, lower temperature probe 15, driving power 3, PLC2 and two-way driving plate 4, driving power is connected with PLC, upper temperature probe
It is connected with PLC with lower temperature probe, PLC is connected with two-way driving plate, two-way driving plate and the semiconductor-on-insulator refrigerator, lower half
Conductor refrigerator is respectively connected with.
The upper temperature control module and lower temperature control module are set on pedestal, and screw hole for fixing is provided on pedestal.
It is provided with shell 6 outside the upper temperature control module and lower temperature control module.
The upper temperature control module and lower temperature control module are arranged symmetrically.
Embodiment 2
Laser crystal bilateral temperature regulating device, including it is respectively arranged at the upper temperature control module of laser crystal both sides, lower temperature control
Module, and for receiving crystal temperature data and the semiconductor cooler of upper temperature control module, lower temperature control module is driven to work
Control system, wherein the upper temperature control module includes upper cooled plate 7, semiconductor-on-insulator refrigerator 8 and upper crystal holder 9, under described
Temperature control module includes lower crystal holder 11, lower semiconductor refrigerator 12 and lower cooled plate 13, and the control system includes upper thermometric
Probe 16, lower temperature probe 15, driving power 3, PLC2 and two-way driving plate 4, driving power is connected with PLC, upper temperature probe
It is connected with PLC with lower temperature probe, PLC is connected with two-way driving plate, two-way driving plate and the semiconductor-on-insulator refrigerator, lower half
Conductor refrigerator is respectively connected with.
The upper crystal holder is close to close the setting of laser crystal profile, is located at the top of laser crystal, in upper crystal holder
Top semiconductor-on-insulator refrigerator, the upper cooled plate of top setting of semiconductor-on-insulator refrigerator, the heat of semiconductor-on-insulator refrigerator are set
It is heavy to be in contact up with upper cooled plate.
The lower crystal holder is close to close the setting of laser crystal profile, is located at the lower part of laser crystal, in lower crystal holder
Lower section lower semiconductor refrigerator, the lower cooled plate of lower section setting of lower semiconductor refrigerator, the heat of lower semiconductor refrigerator are set
It is heavy to be in contact down with lower cooled plate.
The upper cooled plate, semiconductor-on-insulator refrigerator and upper crystal holder are combined as a whole to facilitate installation, lower water cooling
Plate, lower semiconductor refrigerator and lower crystal holder are combined as a whole to facilitate installation.
Embodiment 3
The operational process of laser crystal bilateral temperature regulating device, as described below：
By the temperature of upper temperature probe and lower temperature probe acquisition laser crystal both sides, temperature data is transmitted to PLC, is led to
PLC control two-way driving plates are crossed, adjustment driving power output is that electric current drives semiconductor-on-insulator refrigerator and lower semiconductor refrigeration
Device carries out the transfer of heat, and the heat on metal crystal holder is transferred to cooled plate, is shifted heat by cooled plate
Release.
After powering on, semiconductor-on-insulator refrigerator nearby generates electron-hole pair close to upper crystal holder side, and interior energy subtracts
It is small, temperature reduce, outwardly absorb heat, as cold end, the other end close to upper cooled plate side because electron-hole pair is compound, interior energy
Increase, temperature increases, and to environment heat release, as hot junction；Lower semiconductor refrigerator action principle is identical, close to lower crystal holder
Side nearby generates electron-hole pair, and interior energy reduces, and temperature reduces, and outwardly absorbs heat, as cold end, the other end is close to lower water
Because electron-hole pair is compound, interior energy increases for cold plate side, and temperature increases, and to environment heat release, as hot junction.
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (12)
1. laser crystal bilateral temperature regulating device, it is characterised in that：Upper temperature control mould including being respectively arranged at laser crystal both sides
Block, lower temperature control module, and for receiving crystal temperature data and the semiconductor refrigerating of the upper temperature control module of driving, lower temperature control module
The control system of device work, wherein the upper temperature control module includes the upper cooled plate being from top to bottom arranged, semiconductor-on-insulator refrigerator
With upper crystal holder, the lower temperature control module includes the lower crystal holder being from top to bottom arranged, lower semiconductor refrigerator and lower water
Cold plate, the control system include upper temperature probe, lower temperature probe, driving power, PLC and two-way driving plate, driving power
It is connected with PLC, upper temperature probe and lower temperature probe are connected with PLC, and PLC is connected with two-way driving plate, two-way driving plate and institute
State semiconductor-on-insulator refrigerator, lower semiconductor refrigerator is respectively connected with.
2. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：The laser crystal section is
Square.
3. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：The upper temperature control module is under
Temperature control module is set on pedestal, and screw hole for fixing is provided on pedestal.
4. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：The upper temperature control module is under
Shell is provided with outside temperature control module.
5. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：The upper temperature control module is under
Temperature control module is arranged symmetrically.
6. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：The upper crystal holder is close to
The setting of laser crystal profile is closed, the top of laser crystal is located at, semiconductor-on-insulator refrigerator is set in the top of upper crystal holder, on
The upper cooled plate of top setting of semiconductor cooler, the heat sink of semiconductor-on-insulator refrigerator are in contact with upper cooled plate up.
7. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：The lower crystal holder is close to
The setting of laser crystal profile is closed, the lower part of laser crystal is located at, lower semiconductor refrigerator is set in the lower section of lower crystal holder, under
The lower cooled plate of lower section setting of semiconductor cooler, the heat sink of lower semiconductor refrigerator are in contact with lower cooled plate down.
8. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：The upper cooled plate and lower water
Cold plate is respectively communicated with cooling water pipe.
9. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：In the upper cooled plate under
The fast water collecting nozzle for being connect with cooling water pipe is provided in cooled plate.
10. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：The upper cooled plate, upper half
Conductor refrigerator and upper crystal holder are combined as a whole.
11. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：The lower cooled plate, lower half
Conductor refrigerator and lower crystal holder are combined as a whole.
12. laser crystal bilateral temperature regulating device according to claim 1, it is characterised in that：The PLC connections are for grasping
Make the touch screen controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810820206.7A CN108666855A (en) | 2018-07-24 | 2018-07-24 | Laser crystal bilateral temperature regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810820206.7A CN108666855A (en) | 2018-07-24 | 2018-07-24 | Laser crystal bilateral temperature regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108666855A true CN108666855A (en) | 2018-10-16 |
Family
ID=63788645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810820206.7A Pending CN108666855A (en) | 2018-07-24 | 2018-07-24 | Laser crystal bilateral temperature regulating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108666855A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586164A (en) * | 2018-12-24 | 2019-04-05 | 西安工程大学 | The cooling system and its control method of high power semiconductor lasers |
| CN111952825A (en) * | 2020-08-19 | 2020-11-17 | 科谱(宁波)科技有限公司 | Gain medium cooling device of laser |
| CN112103757A (en) * | 2020-09-01 | 2020-12-18 | 西安电子科技大学 | Modularized heat management device for solid laser block material and control method thereof |
| CN112234412A (en) * | 2020-10-26 | 2021-01-15 | 苏州英谷激光有限公司 | Device for accurately controlling temperature of laser crystal |
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| CN1972037A (en) * | 2006-12-13 | 2007-05-30 | 中国科学院上海光学精密机械研究所 | Frequency-doubling crystal temperature gradient compensation method temperature control apparatus |
| CN101494352A (en) * | 2009-02-17 | 2009-07-29 | 西北大学 | Water, wind mixing refrigerating method and apparatus for whole solid state laser |
| CN101916958A (en) * | 2010-08-25 | 2010-12-15 | 核工业理化工程研究院 | Constant temperature control device of frequency doubling crystals of solid laser |
| CN102751646A (en) * | 2011-04-21 | 2012-10-24 | 上海三鑫科技发展有限公司 | LD (Laser Diode) pumping green solid laser applying double TECs and temperature control method thereof |
| CN104332808A (en) * | 2014-11-12 | 2015-02-04 | 核工业理化工程研究院 | Control device for adjusting laser crystal temperature through semiconductor peltier |
| CN208336799U (en) * | 2018-07-24 | 2019-01-04 | 核工业理化工程研究院 | A kind of laser crystal bilateral temperature regulating device |
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2018
- 2018-07-24 CN CN201810820206.7A patent/CN108666855A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1972037A (en) * | 2006-12-13 | 2007-05-30 | 中国科学院上海光学精密机械研究所 | Frequency-doubling crystal temperature gradient compensation method temperature control apparatus |
| CN101494352A (en) * | 2009-02-17 | 2009-07-29 | 西北大学 | Water, wind mixing refrigerating method and apparatus for whole solid state laser |
| CN101916958A (en) * | 2010-08-25 | 2010-12-15 | 核工业理化工程研究院 | Constant temperature control device of frequency doubling crystals of solid laser |
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| CN208336799U (en) * | 2018-07-24 | 2019-01-04 | 核工业理化工程研究院 | A kind of laser crystal bilateral temperature regulating device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586164A (en) * | 2018-12-24 | 2019-04-05 | 西安工程大学 | The cooling system and its control method of high power semiconductor lasers |
| CN111952825A (en) * | 2020-08-19 | 2020-11-17 | 科谱(宁波)科技有限公司 | Gain medium cooling device of laser |
| CN112103757A (en) * | 2020-09-01 | 2020-12-18 | 西安电子科技大学 | Modularized heat management device for solid laser block material and control method thereof |
| CN112234412A (en) * | 2020-10-26 | 2021-01-15 | 苏州英谷激光有限公司 | Device for accurately controlling temperature of laser crystal |
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