CN2602516Y - Power supply, refrigeration, heat emission, and temperature control system special for semiconductor laser - Google Patents
Power supply, refrigeration, heat emission, and temperature control system special for semiconductor laser Download PDFInfo
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- CN2602516Y CN2602516Y CN 02289782 CN02289782U CN2602516Y CN 2602516 Y CN2602516 Y CN 2602516Y CN 02289782 CN02289782 CN 02289782 CN 02289782 U CN02289782 U CN 02289782U CN 2602516 Y CN2602516 Y CN 2602516Y
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- power supply
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Abstract
A semi-conductive laser applied in system of electricity supply, refrigeration, radiating and temperature control comprises a laser, a detector, a refrigerator, a temperature controller, a relay, a solid relay and a power source which supplies constant voltage direct current to the laser and the refrigerator. The temperature controller is input one line signal and output two lines signal; the input signal is sent out by the temperature detector, and one output signal is low pressure level sequence signal applied to control the circuit of the refrigerating while the other output signal is switch signal applied to protect the laser. The utility model can provide the laser with 0-2 V adjustable high current and little ripple factor power source and precise temperature to control the laser. Therefore, the prompt temperature control of laser and the brake regulation of the system temperature are realized.
Description
Technical field
The utility model relates to the special-purpose power supply of a kind of semiconductor laser, refrigeration, heat radiation and temperature-controlling system.
Background technology
Along with the extensive use of semiconductor laser, making to semiconductor laser provides the integrated system of power supply, refrigeration, heat radiation and temperature control becomes a big demand.Semiconductor laser is quite harsh to the requirement of power supply, and the threshold voltage of semiconductor laser is low, only has about 0.6 volt, and the voltage during work also only has about 1.7 volts, so need power supply from 0 volt of accent, can accurately be adjusted to about 1.7 volts continuously.But electric current will reach tens of amperes when 1.7 volts of voltage, electric current as the laser of 15 watts of luminous powers is 20 amperes, the electric current of the laser that luminous power is 40 watts is 55 amperes, development along with laser technique, the luminous power of the laser under the same voltage also can rise, and electric current also can further strengthen.Owing to the power supply of low-voltage and high-current is relatively more difficult in the control of ripple, making such power supply is a big difficult point, and laser requires to be controlled in 0.5% to the ripple coefficient of power supply, otherwise the stable luminous power that arrives that is difficult to is exported.
Semiconductor laser is a light source, also be a thermal source simultaneously, its luminous power is 40% of an electrical power, 60% electrical power in addition just comes out in the mode of thermal power, so require laser is implemented fast-refrigerating and heat radiation, laser can be worked under lower temperature, and the too high meeting of temperature causes the damage of laser.Only laser is implemented cooling not enough, the Wavelength of Laser that laser sends will be drifted about with temperature, and the temperature of working temperature off-center wavelength is many more, and the drift of wavelength is just big more.So in the process of refrigeration, heat radiation and temperature control, require temperature with laser to remain near the scope very little temperature of centre wavelength, make the laser can continuous operation under the temperature of setting, especially wavelength is being required in the stricter application.
At present simple method is to adopt common powerful power supply to power to laser, adopts simple water-cooling pattern simultaneously.The defective of this method is obvious and great.At first, the ripple coefficient of common power does not reach requirement, and especially common Switching Power Supply is quite big to the infringement of laser; Secondly, the range of common power supply is bigger, regulates the precision that can not reach power source special in the scope of small voltage, and the internal resistance of common power is bigger, damages power supply during big current work easily; In addition, water-cooled can not reach the purpose of accurate temperature controlling, because the temperature of freezing during water-cooled and water temperature height, current size are closely related, temperature can not be controlled near the centre wavelength temperature, even also may cause gathering of heat that the temperature of laser is raise.And water-cooled increases the volume of whole system, makes easily during water-cooled and produces incrustation scale in the refrigerator, causes refrigeration constantly to descend.And be difficult for the working temperature of timing monitoring laser.
The utility model content
Technology of the present utility model is dealt with problems and is: the special-purpose power supply of a kind of semiconductor laser, refrigeration, heat radiation and temperature-controlling system are provided, it can provide the electric system of the temperature of 0-2 little ripple coefficient power supply of volt adjustable great current and accurate control laser for laser, overcome each shortcoming of above method, realized the automatic adjusting of the temperature timing monitoring and the system temperature of laser.
Technical solution of the present utility model is: the special-purpose power supply of semiconductor laser, refrigeration, heat radiation and temperature-controlling system; comprise laser; its characteristics are: comprise that also detector, refrigerator, temp controlled meter, relay, solid-state relay reach the power supply to laser and refrigerator power supply; temp controlled meter is imported one road signal; the output two paths of signals; input signal derives from hygrosensor; output signal one tunnel is the low voltage level sequence signal; be used to control refrigerator; another road output signal is a switching signal, is used for the protection of laser.
Above-mentioned temp controlled meter is little range (0--99.99 ℃), high accuracy (0.1 or 0.5 grade), subsidiary platinum sensor, imports one road signal, the output two paths of signals; Above-mentioned power supply input 220V alternating voltage, output two-way direct voltage, one road 0-2V is adjustable, and current range can be according to the power adjustments of laser, and another road is 12V.
Operation principle of the present utility model is: the temperature of the in good time detecting laser of detector, temp controlled meter while temperature of display setting on panel (is generally the centre wavelength temperature of laser, also can regulate as required) and the temperature surveyed, when the temperature of laser is higher than the temperature of setting, the temp controlled meter output voltage signal is communicated with relay and powers to semiconductor cooler, semiconductor cooler is started working, and gives the laser fast cooling; When the temperature of laser was lower than design temperature, temp controlled meter disconnected relay, stopped to the refrigerator power supply, and refrigeration stops.Because the huyashi-chuuka (cold chinese-style noodles) temperature of refrigerator still is lower than the temperature of laser, the temperature of laser also can continue to descend.Along with the rising of laser temperature, temp controlled meter repeats the operation of top, and the temperature of keeping laser is near the centre wavelength temperature.When laser is under normal circumstances worked; temperature can not exceed the scope of setting; when the heating power of laser during greater than the power of semiconductor cooler; the temperature of laser can constantly rise; when exceeding " alarming value ", thermostat can disconnect solid-state relay by output switching signal, thereby disconnects the power supply of laser; thoroughly turn off thermal source, protected the safety of laser.
The beneficial effect that the utility model compared with prior art has is as follows:
(1) ripple coefficient is less than 0.1%, guaranteed that the error of the emission wavelength of laser and centre wavelength is very little.
(2) used semiconductor cooler, belonged to new material, its volume is little, and refrigeration is rapid, noiseless, pollutions such as no emission and radiation.
(3) added the solid-state relay protective circuit of protecting the core devices semiconductor laser.Detector closely contacts with laser, and temp controlled meter shows the temperature of laser in good time, and in a single day temperature exceeds " alarming value " of setting, and temp controlled meter will disconnect solid-state relay, stops power supply, and has protected laser at once.The temperature of laser drops in the scope of " alarming value ", and solid-state relay is conducting again, powers to laser.So, influenced refrigeration even refrigerating system produces some defect, also the safety of entail dangers to laser not.
Description of drawings
Fig. 1 is a structural principle block diagram of the present invention;
Fig. 2 is the systematic schematic diagram of Fig. 1;
Fig. 3 is the power supply electrical schematic diagram.
Embodiment
As shown in Figure 1, 2; present embodiment comprises laser 9; detector 8, refrigerator 7, temp controlled meter 5, relay 4, solid-state relay 11 and electric power supply 1 is provided for laser and refrigerator; temp controlled meter 5 inputs one road signal, the output two paths of signals, input signal derives from hygrosensor 8; output signal one tunnel is the low voltage level sequence signal; be used to control refrigerator 7, another road output signal is a switching signal, is used for the protection of laser 9.The temperature of detector 8 in good time detecting lasers 9,5 while of temp controlled meter temperature of display setting on panel (is generally the centre wavelength temperature of laser, also can regulate as required) and the temperature surveyed, when the temperature of laser 9 is higher than the temperature of setting, temp controlled meter 5 output voltage signals are communicated with relay 4 and give semiconductor cooler 7 power supplies, semiconductor cooler 7 is started working, and gives laser 9 fast coolings; When the temperature of laser 9 was lower than design temperature, temp controlled meter 5 disconnected relay, stopped to refrigerator 7 power supplies, and refrigeration stops.Because the huyashi-chuuka (cold chinese-style noodles) temperature of refrigerator 7 still is lower than the temperature of laser 9, the temperature of laser 9 also can continue to descend.Along with the rising of laser 9 temperature, temp controlled meter 5 repeats the operation of top, and the temperature of keeping laser 9 is near the centre wavelength temperature.General design temperature also can be controlled at temperature in the reality in the scope of design temperature ± 0.5 degree at centre wavelength temperature ± 2 degree of laser 9.The heat that refrigerator 7 produces is distributed by the fin 6 that links to each other with its hot side.When laser 9 is under normal circumstances worked; temperature can not exceed the temperature value of setting; when the heating power of laser 9 during greater than the power of refrigerator 7; the temperature of laser 9 can constantly rise; when exceeding set temperature value, thermostat can disconnect solid-state relay 11 by output switching signal, thereby disconnects the power supply of laser 9; thoroughly turn off thermal source, protected the safety of laser 9.
As shown in Figure 3, the power supply of laser 9 and the power supply of refrigerator 7 are done to be in the same place, the power supply of laser 9 is that the 0-2 volt is adjustable, the power supply of refrigerator 7 is non-adjustable and less demanding, the method of employing multiple-stage filtering is made laser 9 power supplys of low-voltage and high-current, and the ripple coefficient of power supply is lower than 0.1%.
In power supply 1 opening and closing; for fear of the impact of pulse current to laser 9; brake switch 3 and multiturn potentiometer 2 have been connected in series thereon; before brake switch 3 does not unclamp; multiturn potentiometer 2 is by short circuit; power supply can be to laser 9 power supplies, and another purposes of brake switch 3 is can carry out brake hard in operate miss or device fault, has protected the safety of laser 9.
After power supply 1 start power supply and other instrument were stable, take-off the brake switch 3 was regulated multiturn potentiometer 2 boosted output voltages gradually.In laser 9 power supply, can control the luminous intensity of laser 9 at power supply 1 by the size of the ammeter 10 readout laser electric currents that be connected in seriess with solid-state relay.
Claims (6)
1, the special-purpose power supply of semiconductor laser, refrigeration, heat radiation and temperature-controlling system; comprise laser; it is characterized in that: also comprise detector, refrigerator, temp controlled meter, relay, solid-state relay and electric power supply is provided for laser and refrigerator; temp controlled meter is imported one road signal, the output two paths of signals, and input signal derives from hygrosensor; output signal one tunnel is the low voltage level sequence signal; be used to control refrigerator, another road output signal is a switching signal, is used for the protection of laser.
2, according to the special-purpose power supply of the semiconductor laser shown in the claim 1, refrigeration, heat radiation and temperature-controlling system, it is characterized in that: described temp controlled meter is 0--99.99 ℃ of journey of a small amount of, high accuracy 0.1 or 0.5 grade, subsidiary platinum sensor, import one road signal, the output two paths of signals.
3, according to the special-purpose power supply of the semiconductor laser shown in the claim 1, refrigeration, heat radiation and temperature-controlling system, it is characterized in that: described power supply input 220V alternating voltage, output two-way direct voltage, one road 0-2V is adjustable, and another road is 12V.
4, according to the special-purpose power supply of the semiconductor laser shown in the claim 1, refrigeration, heat radiation and temperature-controlling system, it is characterized in that: string has the ammeter that shows the laser diode current size behind solid-state relay.
5, according to the special-purpose power supply of the semiconductor laser shown in the claim 1, refrigeration, heat radiation and temperature-controlling system, it is characterized in that: also comprising links to each other with refrigerator is used to distribute the fin of its heat.
6, according to the special-purpose power supply of the semiconductor laser shown in the claim 3, refrigeration, heat radiation and temperature-controlling system, it is characterized in that: power supply also comprises and its brake switch that is connected in series mutually and multiturn potentiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02289782 CN2602516Y (en) | 2002-12-16 | 2002-12-16 | Power supply, refrigeration, heat emission, and temperature control system special for semiconductor laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02289782 CN2602516Y (en) | 2002-12-16 | 2002-12-16 | Power supply, refrigeration, heat emission, and temperature control system special for semiconductor laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2602516Y true CN2602516Y (en) | 2004-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02289782 Expired - Fee Related CN2602516Y (en) | 2002-12-16 | 2002-12-16 | Power supply, refrigeration, heat emission, and temperature control system special for semiconductor laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2602516Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341211C (en) * | 2005-12-22 | 2007-10-03 | 天津大学 | Phase miss match compensation heater of high power internal cavity freguency multiplier laser and its method |
| CN100464473C (en) * | 2007-05-22 | 2009-02-25 | 南昌航空大学 | Semiconductor laser precision tune-up and tempeature control device |
| CN101540547A (en) * | 2009-03-25 | 2009-09-23 | 江苏天瑞仪器股份有限公司 | Refrigeration power control circuit for semiconductor detector |
| CN102593716A (en) * | 2011-01-13 | 2012-07-18 | 上海旌纬微电子科技有限公司 | Operating method of optical fiber semiconductor laser integrated module |
| CN105424649A (en) * | 2015-12-04 | 2016-03-23 | 北京大方科技有限责任公司 | Gas chamber structure, gas detection box and gas detection system |
-
2002
- 2002-12-16 CN CN 02289782 patent/CN2602516Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100341211C (en) * | 2005-12-22 | 2007-10-03 | 天津大学 | Phase miss match compensation heater of high power internal cavity freguency multiplier laser and its method |
| CN100464473C (en) * | 2007-05-22 | 2009-02-25 | 南昌航空大学 | Semiconductor laser precision tune-up and tempeature control device |
| CN101540547A (en) * | 2009-03-25 | 2009-09-23 | 江苏天瑞仪器股份有限公司 | Refrigeration power control circuit for semiconductor detector |
| CN101540547B (en) * | 2009-03-25 | 2013-12-25 | 江苏天瑞仪器股份有限公司 | Refrigeration power control circuit for semiconductor detector |
| CN102593716A (en) * | 2011-01-13 | 2012-07-18 | 上海旌纬微电子科技有限公司 | Operating method of optical fiber semiconductor laser integrated module |
| CN105424649A (en) * | 2015-12-04 | 2016-03-23 | 北京大方科技有限责任公司 | Gas chamber structure, gas detection box and gas detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |