CN202906191U - Control system of fiber-coupling end-surface pumped solid-state laser - Google Patents
Control system of fiber-coupling end-surface pumped solid-state laser Download PDFInfo
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- CN202906191U CN202906191U CN 201220384273 CN201220384273U CN202906191U CN 202906191 U CN202906191 U CN 202906191U CN 201220384273 CN201220384273 CN 201220384273 CN 201220384273 U CN201220384273 U CN 201220384273U CN 202906191 U CN202906191 U CN 202906191U
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Abstract
The utility model relates to a control system of a fiber-coupling end-surface pumped solid-state laser. The control system comprises a master control circuit, an environment temperature detection circuit, a laser head temperature detection circuit, a semiconductor laser diode temperature detection circuit, a laser head crystal temperature control circuit and a semiconductor laser diode current control circuit, wherein the environment temperature detection circuit, the laser head temperature detection circuit, the semiconductor laser diode temperature detection circuit, the laser head crystal temperature control circuit and the semiconductor laser diode current control circuit are connected with the master control circuit respectively. The master control circuit is used to realize the control of the laser. The environment temperature detection circuit and the laser head temperature detection circuit are used to realize detection, determination and alarm output of an environment temperature and a laser head temperature respectively. The semiconductor laser diode temperature detection circuit is used to realize temperature control of a semiconductor laser diode. The laser head crystal temperature control circuit is used to realize the temperature control of the crystal in the laser head. The semiconductor laser diode current control circuit is used to realize setting and control of a working current of the semiconductor laser diode. By using the system of the utility model, the parameter setting and the control to the laser is effectively realized.
Description
Technical field
The utility model relates to the laser technique field, relates in particular to a kind of control system of fiber-coupling end-pumped solid-state laser.
Background technology
Laser is one of invention of great significance in the modern science technology, and along with the important breakthrough of semiconductor laser diode technology, solid state laser obtains powerful development, and the field of its application is constantly expanded.Light-pumped solid state laser adopts semiconductor laser diode as pumping source, and the coupled modes of pumping can be divided into end pumping and profile pump, and wherein end pumping can be divided into again direct end pumping and two kinds of structures of coupling fiber end pumping.With respect to the profile pump mode, the efficient of end pumping is higher, and this is that the pattern matching of oscillation light is effective because the end pumping coupling loss is less.With respect to direct end pumping mode, adopt the mode of coupling fiber pumping, can obtain larger power output, reduce manufacturing technique requirent.The relative laser of other types, fiber-coupling end-pumped solid-state laser efficient is high, the life-span is long, beam quality is high, good stability, compact conformation.In the prior art, use the mode of profile pump, electro-optical efficiency is low, and beam quality is poor, all can not satisfy instructions for use in many industrial applications.
Fiber-coupling end-pumped solid-state laser is to adopt semiconductor laser diode as pumping source, by coupling fiber, adopts the laser of end pumping mode work.Fiber-coupling end-pumped solid-state laser mainly is comprised of controller and laser head, and controller inside comprises semiconductor laser diode and control circuit thereof, and major function is to produce stable pumping laser, and provides laser parameter adjusting, function setting; Laser head mainly is comprised of operation material, AOM, frequency-doubling crystal and output reflector.Laser head links to each other with optical fiber with controller, is used for the laser that the laser controller semiconductor laser diode produces is carried out the fiber end face pumping, and the coupling Output of laser; And a mechanical shutter is arranged in the laser head, can be used for controlling opening or closing of Laser output.
But fiber-coupling end-pumped solid-state laser has certain requirement to its operating ambient temperature.In its course of work, must guarantee that crystal temperature effect is stable in semiconductor laser diode, the laser head, being necessary for semiconductor laser diode provides electric current adjustable stabilized power supply; During use, according to the different application requirement, need to select the mode of operation of laser, the parameters such as operating current, operating frequency of laser are adjusted in the output of control laser power, and running parameter and the operating time of working temperature and recording laser is set.These functions all need the circuit kit control system to realize, the control system of a kind of fiber-coupling end-pumped solid-state laser described in the utility model namely is a kind of technical scheme that realizes the setting of laser works parameter and control.
The utility model content
Technical problem to be solved in the utility model provides a kind of control system of fiber-coupling end-pumped solid-state laser, is used for solving the function system problem that the laser works parameter is arranged and controls.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of control system of fiber-coupling end-pumped solid-state laser comprises governor circuit and the ambient temperature detection circuit that is connected with described governor circuit respectively, laser head temperature sensing circuit, semiconductor laser diode temperature sensing circuit, laser head crystal temperature effect control circuit and semiconductor laser diode current control circuit;
Described governor circuit, it is used for realization to the control of fiber-coupling end-pumped solid-state laser, comprises functions such as realizing data processing, logic control, interface communication;
Described ambient temperature detection circuit, it is connected with described governor circuit, is used for realization to detection, judgement, the warning output function of ambient temperature;
Described laser head temperature sensing circuit, it is connected with described governor circuit, is used for realization to detection, judgement, the warning output function of laser head temperature;
Described semiconductor laser diode temperature sensing circuit, it is connected with described governor circuit, is used for realization to the temperature control of semiconductor laser diode;
Described laser head crystal temperature effect control circuit, it is connected with described governor circuit, is used for realization to the temperature control of the crystal in the laser head;
Described semiconductor laser diode current control circuit, it is connected with described governor circuit, is used for realization to setting and the control of the operating current of semiconductor laser diode, has guaranteed that the operating current of semiconductor laser diode remains at set point.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described control system also is circumscribed with operation panel circuit and/or communication interface circuit;
Described operation panel circuit is connected with described governor circuit, and external input key plate and LCD display, is used for realizing parameter display, parameter input, status display function;
Described communication interface circuit connects described governor circuit, and by the external PC of RS232 data wire, is used for realizing parameter display, parameter input, status display function.
In control system described in the utility model, described operation panel circuit and described communication interface circuit can use simultaneously, also can only use one of them.
Further, described control system also is provided with the acousto-optic-electric source control circuit, and it is connected with described governor circuit, is used for realization the mode of operation of fiber-coupling end-pumped solid-state laser is selected and the operating frequency adjustment.
Further, described control system also is provided with the built-in mechanical shutter control circuit of laser head, it is connected with described governor circuit, also is connected with laser head built-in electromagnetic valve coil, is used for controlling the built-in mechanical shutter of laser head by the electric current of governor circuit control laser head built-in electromagnetic valve coil.
Further, described control system also is provided with the power circuit that is connected with described governor circuit, is used to described control system that working power is provided.
Further, described ambient temperature detection circuit is mounted on the temp probe A in the controller, is used for realizing that the temperature signal with temp probe A detects is sent to governor circuit.
Further, described laser head temperature sensing circuit is mounted on the temp probe B in the laser head, is used for realizing that the temperature signal with temp probe B detects is sent to governor circuit.
Further, described semiconductor laser diode temperature sensing circuit is mounted on the temp probe C on the semiconductor laser diode, is used for realizing that the temperature signal with temp probe C detects is sent to governor circuit;
Described semiconductor laser diode temperature sensing circuit also connects the cooling piece a on the semiconductor laser diode temperature, is used for by the controlling capacity of refrigeration of governor circuit realization to cooling piece a.
Further, described laser head crystal temperature effect control circuit is mounted on the temp probe D on the crystal in the laser head, is used for realizing that the temperature signal with temp probe D detects is sent to governor circuit;
Described laser head crystal temperature effect control circuit also is mounted on the cooling piece b on the crystal in the laser head, is used for by the controlling capacity of refrigeration of governor circuit realization to cooling piece b.
The beneficial effects of the utility model are: when the temperature change of semiconductor laser diode, control system described in the utility model can be regulated corresponding temperature-control circuit and current control circuit automatically, regulate operating current, and the variations in temperature of following the tracks of semiconductor laser diode, change refrigerating capacity, guarantee the semiconductor laser diode module temperature constant, the laser power stability of output; When crystal temperature effect in the laser head changed, described control system can be regulated corresponding temperature-control circuit automatically, followed the tracks of crystal temperature effect variation in the laser head, changed refrigerating capacity, guaranteed crystal temperature effect temperature constant in the laser head, the laser power stability of output; Also be provided with multiple Laser output pattern in the described control system, can satisfy the instructions for use of different occasions.
Description of drawings
Fig. 1 is the structural representation of control system described in the utility model;
In the accompanying drawing, the list of parts of each label representative is as follows:
1, governor circuit, 2, ambient temperature detection circuit, 3, laser head temperature sensing circuit, 4, the semiconductor laser diode temperature sensing circuit, 5, laser head crystal temperature effect control circuit, 6, semiconductor laser diode current control circuit, 7, operation panel circuit, 8, communication interface circuit, 9, the acousto-optic-electric source control circuit, 10, the built-in mechanical shutter control circuit of laser head, 11, power circuit.
Embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used for explaining the utility model, is not be used to limiting scope of the present utility model.
The utility model is not only applicable to the distribution type fiber-optic coupling end-pumped solid-state laser, is applicable to the integral fibre-optic coupling end-pumped solid-state laser yet, and embodiment described below is for the distribution type fiber-optic coupling end-pumped solid-state laser.
Fiber-coupling end-pumped solid-state laser comprises that controller is connected controller and comprises the PCB circuit board and connect parts, semiconductor laser diode, acousto-optic power supply, Switching Power Supply on it with laser head; Above-mentioned Switching Power Supply one termination 220VAC civil power, an end is connected with the PCB circuit board, for the PCB circuit board provides the supply of galvanic current source; The PCB circuit board is connected on the semiconductor laser diode by cable, for above-mentioned semiconductor laser diode provides energy; It is luminous energy that semiconductor laser diode is used for electric energy conversion, produces laser, and by optical fiber laser energy is transferred to laser head; Acousto-optic power supply one end is connected on the PCB circuit board by cable, and the PCB circuit board provides power supply and control signal for it, and the described acousto-optic power supply other end is connected on the AOM parts of laser head inside by radio frequency line, the output radiofrequency signal, the switch of control AOM parts, the effect by the AOM parts can reach the operating frequency of control laser and the purpose of mode of operation.
On the described PCB circuit board control system described in the utility model is set namely, its structure comprises governor circuit 1 and the ambient temperature detection circuit 2 that is connected with described governor circuit 1 respectively, laser head temperature sensing circuit 3, semiconductor laser diode temperature sensing circuit 4, laser head crystal temperature effect control circuit 5 and semiconductor laser diode current control circuit 6 as shown in Figure 1;
Described governor circuit 1, it is used for realization to the control of fiber-coupling end-pumped solid-state laser;
Described ambient temperature detection circuit 2, it is connected with described governor circuit 1, is used for realization to detection, judgement, the warning output function of ambient temperature;
Described laser head temperature sensing circuit 3, it is connected with described governor circuit 1, is used for realization to detection, judgement, the warning output function of laser head temperature;
Described semiconductor laser diode temperature sensing circuit 4, it is connected with described governor circuit 1, is used for realization to the temperature control of semiconductor laser diode;
Described laser head crystal temperature effect control circuit 5, it is connected with described governor circuit 1, is used for realization to the temperature control of the crystal in the laser head;
Described semiconductor laser diode current control circuit 6, it is connected with described governor circuit 1, is used for realization to setting and the control of the operating current of semiconductor laser diode.
Described control system also is circumscribed with operation panel circuit 7 and/or communication interface circuit 8.Described operation panel circuit 7 is connected with described governor circuit 1, and external input key plate and LCD display, is used for realizing parameter display, parameter input, status display function.Described operation panel circuit 7 is connected on the PCB circuit board by cable, and the user can observe and revise the parameter of laser easily by the LCD picture.The effect of keypad is the input instruction, and the input instruction is processed control integration each unit of function circuit on the PCB circuit board through governor circuit 1.LCD display reads the information from governor circuit 1, and is presented on the LCD.
Described communication interface circuit 8 connects described governor circuit 1, and by the external PC of RS232 data wire, is used for realizing parameter display, parameter input, status display function.
Described control system also is provided with acousto-optic-electric source control circuit 9.For acousto-optic-electric source control circuit 9, it is connected with governor circuit 1, and input message is to governor circuit 1, and governor circuit 1 is accepted and processed, and controls the output state of described acousto-optic-electric source control circuit 9 control circuits, thus the output state of guide sound photoelectric source.And acousto-optic power supply output signal is to the AOM parts of laser head inside, and the effect of AOM parts is output frequency or output modes of regulating laser.Thereby, by acousto-optic-electric source control circuit 9, can reach the purpose of control laser output frequency or output mode, realize the mode of operation of fiber-coupling end-pumped solid-state laser is selected and the operating frequency adjustment.
Described control system also is provided with the built-in mechanical shutter control circuit 10 of laser head, for the built-in mechanical shutter control circuit 10 of laser head, it connects governor circuit 1 and laser head built-in electromagnetic valve coil, input message is to governor circuit 1, governor circuit 1 is accepted and is processed, and controls the output state of the built-in mechanical shutter control circuit 10 of above-mentioned laser head.The built-in mechanical shutter control circuit 10 output connected electromagnetic valve coils of laser head, electric current on the control electromagnetic valve coil, the position of change electromagnetically operated valve.
Described control system also is provided with power circuit 11, and for described power circuit 11, it is connected with described governor circuit 1, is used to described control system that working power is provided.
For ambient temperature detection circuit 2, it is mounted on the temp probe A in the controller, and when the temperature change in the controller, the signal of telecommunication on the temp probe A is followed change; Above-mentioned ambient temperature detection circuit 2 connects governor circuit 1, the upper signal of telecommunication that changes of temp probe A is sent to governor circuit 1, this signal is accepted and processed to governor circuit 1, temperature value is presented in the guidance panel on the LCD, and judge and to detect temperature whether in the scope that arranges, as exceeding the scope of setting, governor circuit 1 sends alarm signal, stop Laser output, guarantee the safety of laser.
For laser head temperature sensing circuit 3, laser head temperature sensing circuit 3 is mounted on the temp probe B in the laser head, and when the temperature change in the laser head, the signal of telecommunication on the temp probe B is followed change; Above-mentioned laser head temperature sensing circuit 3 connects governor circuit 1, the upper signal of telecommunication that changes of temp probe B is sent to governor circuit 1, this signal is accepted and processed to governor circuit 1, temperature value is presented in the guidance panel on the LCD, and judge and to detect temperature whether in the scope that arranges, as exceeding the scope of setting, governor circuit 1 sends alarm signal, stop Laser output, guarantee the safety of laser.
For semiconductor laser diode temperature sensing circuit 4, it connects temp probe C, and temp probe C is installed in the semiconductor laser diode surface; It also is mounted on the cooling piece a on the semiconductor laser diode, and semiconductor laser diode is accepted the PCB circuit board electric energy is provided, and converts electrical energy into luminous energy, produces laser.In this process, some electric energy is converted to heat energy, and the semiconductor laser diode temperature is raise.Such as the processing of not lowering the temperature, not only can affect the useful life of semiconductor laser diode, even can cause semiconductor laser diode to damage; And semiconductor laser diode Output of laser energy variation with temperature and changing, therefore must guarantee temperature stabilization on the semiconductor laser diode, could obtain stable laser energy.The signal of telecommunication on the temp probe C changes with the variation of temperature on the semiconductor laser diode, the signal of telecommunication of this variation after treatment, be sent to governor circuit 1 by holding wire, governor circuit 1 is according to receiving information, by controlling the switching time of above-mentioned semiconductor laser diode temperature detection control circuit internal switch pipe, regulate the size of the upper electric current of cooling piece C, change the refrigerating capacity of cooling piece a, reach the purpose of control semiconductor laser diode temperature.
For semiconductor laser diode current control circuit 6, it provides energy by power circuit 11 and works, and connects governor circuit 1, and connection PCB circuit board outer semiconductor laser diode is the stable electric power supply of semiconductor laser diode.As previously mentioned, semiconductor laser diode is to be luminous energy and lasing parts with electric energy conversion, and the stability of electric current directly affects the stability of Output of laser energy on the semiconductor laser diode.Therefore, be provided with high-precision current detection circuit in the above-mentioned semiconductor laser diode current detection control circuit, current signal is converted into voltage through Hall element in the semiconductor laser diode, amplifies through amplifier, is sent to governor circuit 1 by holding wire; Voltage signal after amplifying simultaneously, be connected to constant current source control circuit in the semiconductor laser diode current detection control circuit, feedback circuit in constant current source control circuit compares with the current controling signal computing from governor circuit 1, the output current of control constant current source control circuit reaches the purpose of controlling the semiconductor laser diode electric current.
For laser head crystal temperature effect control circuit 5, temp probe D, cooling piece b in its connection laser head on the crystal connect governor circuit 1.The variation of temp probe D power on signal is followed the interior crystal temperature effect of laser head and is changed and change.Crystal temperature effect detects in the control circuit and is provided with temperature detection, refrigeration circuit in the above-mentioned laser head, can according to the signal from governor circuit 1, automatically regulate the temperature of crystal in the laser head; And with the treated governor circuit 1 that outputs to of temp probe D power on signal, 1 pair of this signal of governor circuit carries out calculation process, and current temperature value is presented on the LCD display in the guidance panel.
In addition, the cooling piece a that is installed in the present embodiment on the semiconductor laser diode is connected on the PCB circuit board by cable, can guarantee the semiconductor laser diode temperature stabilization; The cooling piece b, temp probe, the mechanical shutter that are installed on the interior crystal of laser head are connected on the PCB circuit board by cable.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1. the control system of a fiber-coupling end-pumped solid-state laser, it is characterized in that, comprise governor circuit and the ambient temperature detection circuit that is connected with described governor circuit respectively, laser head temperature sensing circuit, semiconductor laser diode temperature sensing circuit, laser head crystal temperature effect control circuit and semiconductor laser diode current control circuit;
Described governor circuit, it is used for realization to the control of fiber-coupling end-pumped solid-state laser;
Described ambient temperature detection circuit, it is connected with described governor circuit, is used for realization to detection, judgement, the warning output function of ambient temperature;
Described laser head temperature sensing circuit, it is connected with described governor circuit, is used for realization to detection, judgement, the warning output function of laser head temperature;
Described semiconductor laser diode temperature sensing circuit, it is connected with described governor circuit, is used for realization to the temperature control of semiconductor laser diode;
Described laser head crystal temperature effect control circuit, it is connected with described governor circuit, is used for realization to the temperature control of the crystal in the laser head;
Described semiconductor laser diode current control circuit, it is connected with described governor circuit, is used for realization to setting and the control of the operating current of semiconductor laser diode.
2. control system according to claim 1 is characterized in that, described control system also is circumscribed with operation panel circuit and/or communication interface circuit;
Described operation panel circuit is connected with described governor circuit, and external input key plate and LCD display, is used for realizing parameter display, parameter input, status display function;
Described communication interface circuit connects described governor circuit, and by the external PC of RS232 data wire, is used for realizing parameter display, parameter input, status display function.
3. control system according to claim 1, it is characterized in that, described control system also is provided with the acousto-optic-electric source control circuit, and it is connected with described governor circuit, will be for the mode of operation selection and the operating frequency adjustment that realize fiber-coupling end-pumped solid-state laser.
4. control system according to claim 1, it is characterized in that, described control system also is provided with the built-in mechanical shutter control circuit of laser head, it is connected with described governor circuit, also with laser head built-in electromagnetic valve coil be connected, be used for controlling the built-in mechanical shutter of laser head by the electric current of governor circuit control laser head built-in electromagnetic valve coil.
5. control system according to claim 1 is characterized in that, described control system also is provided with the power circuit that is connected with described governor circuit, is used to described control system that working power is provided.
6. control system according to claim 1 is characterized in that, described ambient temperature detection circuit is mounted on the temp probe A in the controller, is used for realizing that the temperature signal with temp probe A detects is sent to governor circuit.
7. control system according to claim 1 is characterized in that, described laser head temperature sensing circuit is mounted on the temp probe B in the laser head, is used for realizing that the temperature signal with temp probe B detects is sent to governor circuit.
8. control system according to claim 1, it is characterized in that, described semiconductor laser diode temperature sensing circuit is mounted on the temp probe C on the semiconductor laser diode, is used for realizing that the temperature signal with temp probe C detects is sent to governor circuit;
Described semiconductor laser diode temperature sensing circuit also connects the cooling piece a on the semiconductor laser diode temperature, is used for by the controlling capacity of refrigeration of governor circuit realization to cooling piece a.
9. control system according to claim 1 is characterized in that, described laser head crystal temperature effect control circuit is mounted on the temp probe D on the crystal in the laser head, is used for realizing that the temperature signal with temp probe D detects is sent to governor circuit;
Described laser head crystal temperature effect control circuit also is mounted on the cooling piece b on the crystal in the laser head, is used for by the controlling capacity of refrigeration of governor circuit realization to cooling piece b.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220384273 CN202906191U (en) | 2012-08-03 | 2012-08-03 | Control system of fiber-coupling end-surface pumped solid-state laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220384273 CN202906191U (en) | 2012-08-03 | 2012-08-03 | Control system of fiber-coupling end-surface pumped solid-state laser |
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| CN 201220384273 Expired - Fee Related CN202906191U (en) | 2012-08-03 | 2012-08-03 | Control system of fiber-coupling end-surface pumped solid-state laser |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068464A (en) * | 2015-07-02 | 2015-11-18 | 北京国科世纪激光技术有限公司 | Control system and method for green laser |
| CN106451047A (en) * | 2016-06-16 | 2017-02-22 | 光惠（上海）激光科技有限公司 | Novel intelligent self-test optical fiber laser device and power-on self-test method for same |
| CN108418084A (en) * | 2018-05-08 | 2018-08-17 | 核工业理化工程研究院 | The optics cabin atmosphere monitoring device and control method of great-power solid laser |
| CN110736545A (en) * | 2018-07-20 | 2020-01-31 | 大族激光科技产业集团股份有限公司 | laser head temperature monitoring device and method |
| CN117589428A (en) * | 2024-01-19 | 2024-02-23 | 中国工程物理研究院激光聚变研究中心 | Device and method for evaluating pumping characteristics of semiconductor laser |
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2012
- 2012-08-03 CN CN 201220384273 patent/CN202906191U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068464A (en) * | 2015-07-02 | 2015-11-18 | 北京国科世纪激光技术有限公司 | Control system and method for green laser |
| CN105068464B (en) * | 2015-07-02 | 2018-05-22 | 北京国科世纪激光技术有限公司 | The control system and method for a kind of green (light) laser |
| CN106451047A (en) * | 2016-06-16 | 2017-02-22 | 光惠（上海）激光科技有限公司 | Novel intelligent self-test optical fiber laser device and power-on self-test method for same |
| CN106451047B (en) * | 2016-06-16 | 2020-05-15 | 光惠（上海）激光科技有限公司 | Intelligent self-checking optical fiber laser and power-on self-checking method thereof |
| CN108418084A (en) * | 2018-05-08 | 2018-08-17 | 核工业理化工程研究院 | The optics cabin atmosphere monitoring device and control method of great-power solid laser |
| CN110736545A (en) * | 2018-07-20 | 2020-01-31 | 大族激光科技产业集团股份有限公司 | laser head temperature monitoring device and method |
| CN117589428A (en) * | 2024-01-19 | 2024-02-23 | 中国工程物理研究院激光聚变研究中心 | Device and method for evaluating pumping characteristics of semiconductor laser |
| CN117589428B (en) * | 2024-01-19 | 2024-06-04 | 中国工程物理研究院激光聚变研究中心 | Device and method for evaluating pumping characteristics of semiconductor laser |
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Granted publication date: 20130424 Termination date: 20210803 |
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