CN218867635U - Laser instrument frequency stabilization system - Google Patents
Laser instrument frequency stabilization system Download PDFInfo
- Publication number
- CN218867635U CN218867635U CN202320109567.7U CN202320109567U CN218867635U CN 218867635 U CN218867635 U CN 218867635U CN 202320109567 U CN202320109567 U CN 202320109567U CN 218867635 U CN218867635 U CN 218867635U
- Authority
- CN
- China
- Prior art keywords
- laser
- signal
- detection signal
- frequency stabilization
- stabilization system
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Landscapes
- Semiconductor Lasers (AREA)
Abstract
The utility model provides a laser instrument frequency stabilization system belongs to laser instrument frequency stabilization technical field. The laser frequency stabilization system comprises: the laser is used for sending an optical signal to be frequency stabilized; the optical splitting device is connected with the laser and is used for splitting an optical signal to be frequency stabilized into an output optical signal, a first detection signal and a second detection signal; the light absorption cell is connected with one end of the light splitting device, which is used for outputting a second detection signal, and is used for converting the second detection signal into a third detection signal; the signal acquisition device is used for acquiring a first detection signal and a third detection signal; the signal processing device comprises a microcontroller and a signal feedback circuit which are connected, the microcontroller is also connected with the signal acquisition device, and the feedback circuit is also connected with the laser; and the temperature control device is used for maintaining the working environment temperature of the laser within a preset temperature range. The utility model discloses a laser instrument frequency stabilization system can make the output optical signal that the laser instrument can be stable.
Description
Technical Field
The utility model relates to a laser instrument frequency stabilization technical field especially relates to a laser instrument frequency stabilization system.
Background
The semiconductor laser has the advantages of small volume, high efficiency, low cost, simple structure, convenient tuning and the like, so that the semiconductor laser is widely applied to the scientific research fields of precision metering, optical fiber communication, high-resolution laser spectrum, laser detection and the like. However, the free-running semiconductor laser is susceptible to environmental conditions, so that the output frequency generally fluctuates irregularly with time, and the laser frequency is stabilized by a frequency stabilization technique. The frequency stabilization technology of the semiconductor laser which is commonly used at present mainly comprises an optical feedback frequency stabilization technology, a direct electronic control frequency stabilization technology and a mixed frequency stabilization technology.
However, since the output optical signal of the laser at different temperatures has a certain fluctuation, the stability of the output signal cannot be ensured.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a laser instrument frequency stabilization system can make the output optical signal that the laser instrument can be stable.
The utility model discloses a further an aim is so that laser instrument steady frequency system changes and reaches steady state.
Particularly, the utility model provides a laser instrument frequency stabilization system includes:
the laser is used for sending an optical signal to be frequency stabilized;
the optical splitting device is connected with the laser and is used for splitting the optical signal to be frequency stabilized into an output optical signal, a first detection signal and a second detection signal, and the splitting ratio of the first detection signal to the second detection signal is 1 to 1;
the light absorption cell is connected with one end of the light splitting device, which is used for outputting the second detection signal, and is used for converting the second detection signal into a third detection signal;
the signal acquisition device is used for acquiring the first detection signal and the third detection signal;
the signal processing device comprises a microcontroller and a signal feedback circuit which are connected, the microcontroller is also connected with the signal acquisition device, and the feedback circuit is also connected with the laser;
and the temperature control device is used for maintaining the working environment temperature of the laser within a preset temperature range.
Optionally, the temperature control device comprises:
the thermistor is used for sensing the working environment temperature of the laser;
the temperature controller is connected with the thermistor and is used for monitoring the resistance value of the thermistor;
the semiconductor refrigerating sheet is connected with the temperature controller and is used for refrigerating or heating;
and two sides of the radiating fin are respectively attached to the semiconductor refrigerating fin and the laser.
Optionally, the temperature control device further comprises:
and the heat insulation layer is used for isolating the laser and the thermistor from the outside.
Optionally, the heat insulation layer covers the laser and the thermistor and forms a heat insulation cavity together with the heat sink.
Optionally, the temperature control device further comprises:
and the heat sink is arranged on one side of the semiconductor refrigeration piece, which is far away from the radiating fin, and is used for supporting the semiconductor refrigeration piece.
Optionally, the light splitting device includes:
the first coupler comprises a first input end, a first output end and a second output end, the first input end is connected with the laser, and the first coupler is used for dividing the optical signal to be frequency stabilized into an output optical signal and a detection optical signal and outputting the output optical signal and the detection optical signal through the first output end and the second output end respectively;
and the second coupler comprises a second input end, a third output end and a fourth output end, the second input end is connected with the second output end, and the second coupler is used for dividing the detection light signal into a first detection signal and a second detection signal and outputting the first detection signal and the second detection signal through the third output end and the fourth output end respectively.
Optionally, the signal acquisition device includes:
the first photoelectric detector is connected with the third output end;
the second photoelectric detector is connected with the output end of the light absorption cell;
and the power acquisition board is connected with the first photoelectric detector and the second photoelectric detector and used for converting optical signals into digital signals, and the power acquisition board is also connected with the microcontroller.
Optionally, the first coupler and the second coupler are both fiber couplers.
Optionally, the light absorption cell is an acetylene absorption cell.
According to the utility model discloses an embodiment, laser instrument frequency stabilization system has included temperature control module, can make the operational environment temperature of laser instrument stable, combines the frequency stabilization function of this laser instrument for the output optical signal that the laser instrument can be stable.
According to the utility model discloses an embodiment, temperature control device includes the semiconductor refrigeration piece, can refrigerate because can heat again, through the conduction of fin, can carry out temperature control effectively to the laser instrument under the ambient temperature of difference for the temperature of laser instrument maintains in reasonable within range.
According to the utility model discloses an embodiment, temperature control device includes the insulating layer, can effectively keep apart laser instrument and external environment to avoid or reduce ambient temperature to the influence of the operational environment temperature of laser instrument, make laser instrument frequency stabilization system change and reach steady state.
According to the utility model discloses an embodiment, temperature control device is still including setting up and keeping away from in the semiconductor refrigeration piece the heat sink of one side of fin, heat sink has played the effect of supporting each part of its top promptly, also has certain supplementary radiating effect.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a connection block diagram of a laser frequency stabilization system according to an embodiment of the present invention;
fig. 2 is a schematic layout of a temperature control device of a laser frequency stabilization system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a laser frequency stabilization system according to an embodiment of the present invention.
Reference numerals:
100-a laser frequency stabilizing system, 10-a laser, 20-a light splitting device, 21-a first coupler, 22-a second coupler, 30-a light absorption cell, 40-a signal acquisition device, 41-a first photoelectric detector, 42-a second photoelectric detector, 43-a power acquisition board, 50-a signal processing device, 51-a microcontroller, 52-a signal feedback circuit, 60-a temperature control device, 61-a thermistor, 62-a temperature controller, 63-a semiconductor refrigeration piece, 64-a cooling fin, 65-a heat insulation layer and 66-a heat sink.
Detailed Description
Fig. 1 is a connection block diagram of a laser frequency stabilization system 100 according to an embodiment of the present invention. As shown in fig. 1, in one embodiment, the laser frequency stabilization system 100 includes a laser 10, a light splitting device 20, a light absorption cell 30, a signal collecting device 40, a signal processing device 50, and a temperature control device 60. The Laser 10 is used for emitting an optical signal to be frequency stabilized, and the Laser 10 may be a DFB Laser 10 (Distributed Feedback Laser 10). The optical splitting device 20 is connected to the laser 10, and is configured to split the optical signal to be frequency-stabilized into an output optical signal, a first detection signal, and a second detection signal, where a splitting ratio of the first detection signal to the second detection signal is 1 to 1. The light absorption cell 30 is connected to one end of the light splitting device for outputting the second detection signal, and is configured to convert the second detection signal into a third detection signal, and the light absorption cell 30 may be an acetylene absorption cell. The signal acquisition device 40 is configured to acquire the first detection signal and the third detection signal. The signal processing device 50 comprises a microcontroller 51 and a signal feedback circuit 52 which are connected, wherein the microcontroller 51 is also connected with the signal acquisition device 40, and the feedback circuit is also connected with the laser 10. The signal processing device 50 may perform frequency stabilization according to a processing method in the prior art, that is, determine a variation amount of the optical signal by monitoring the power of the first detection signal, determine a variation direction of the optical wave by monitoring the optical power of the third detection signal at the maximum slope of the characteristic absorption peak, and further control the laser 10 at the maximum slope of the characteristic absorption peak by fine-tuning the working current of the laser 10, so that the laser 10 is locked to an initial state, thereby achieving the purpose of frequency locking, and enabling the output optical signal of the laser 10 to have a stable frequency. The temperature control device 60 is used to maintain the temperature of the working environment of the laser 10 within a preset temperature range.
The laser frequency stabilization system 100 of this embodiment includes a temperature control module, and can stabilize the temperature of the working environment of the laser 10, and combine the frequency stabilization function of the laser 10, so that the laser 10 can stably output an optical signal.
Fig. 2 is a schematic layout diagram of a temperature control device 60 of a laser frequency stabilization system 100 according to an embodiment of the present invention. As shown in fig. 2, in one embodiment, the temperature control device 60 includes a thermistor 61, a thermostat 62, a semiconductor cooling plate 63, and a heat sink 64. The thermistor 61 is used for sensing the temperature of the working environment of the laser 10, and the thermistor 61 may be directly in contact with the laser 10 or may be disposed near the laser 10. The temperature controller 62 is connected to the thermistor 61 and configured to monitor a resistance of the thermistor 61, and since the resistance of the thermistor 61 reflects an ambient temperature of the laser, the temperature controller 62 may determine a working ambient temperature of the laser 10 according to the resistance of the thermistor 61, and then determine whether the laser 10 needs to be heated or cooled. The semiconductor refrigerating sheet 63 is connected with the temperature controller 62 and used for refrigerating or heating. The principle of the semiconductor cooling plate 63 for cooling and heating is prior art and will not be described herein. Both sides of the heat sink 64 are respectively bonded to the semiconductor cooling plate 63 and the laser 10. The heat or cold of the semiconductor cooling plate 63 can be carried to the laser 10 by the arrangement of the heat sink 64.
The temperature control device 60 of the present embodiment includes the semiconductor cooling plate 63, since both heating and cooling can be performed, and the temperature of the laser 10 can be effectively controlled at different environmental temperatures by conduction of the cooling plate 64, so that the temperature of the laser 10 can be maintained within a reasonable range.
In a further embodiment, as shown in fig. 2, the temperature control device 60 further comprises a thermal insulation layer 65 for isolating the laser 10 and the thermistor 61 from the outside. In one embodiment, a thermal insulation layer 65 covers the laser 10 and the thermistor 61 and forms a thermal insulation cavity together with the heat sink 64.
The laser frequency stabilization system 100 of the present embodiment can stabilize the output wavelength of the laser 10 at ± 0.15pm, so that the system can be used for calibrating a precision optical measurement instrument.
The temperature control device 60 in this embodiment includes the thermal insulation layer 65, which can effectively isolate the laser 10 from the external environment, so as to avoid or reduce the influence of the ambient temperature on the working environment temperature of the laser 10, and make the laser frequency stabilization system 100 more easily reach the stable state.
In a further embodiment, as shown in fig. 2, the temperature control device 60 further includes a heat sink 66 disposed on a side of the semiconductor chilling plate 63 away from the heat sink 64 for supporting the semiconductor chilling plate 63. The heat sink 66 may be made of an aluminum alloy.
The heat sink 66 of the present embodiment functions to support various components thereon and also has a certain auxiliary heat dissipation function.
Fig. 3 is a schematic diagram of a laser frequency stabilization system 100 according to an embodiment of the present invention. As shown in fig. 3, in one embodiment, the optical splitting device 20 includes a first coupler 21 and a second coupler 22, and optionally, the first coupler 21 and the second coupler 22 are both fiber couplers. The first coupler 21 includes a first input end, a first output end and a second output end, the first input end is connected to the laser 10, and the first coupler 21 is configured to divide an optical signal to be frequency-stabilized into an output optical signal and a probe optical signal and output the output optical signal through the first output end and the second output end, respectively. Here, the splitting ratio of the output optical signal to the probe optical signal may be 4:1, that is, 80% of the optical signal to be frequency-stabilized is distributed to the first output terminal, and 20% is distributed to the second output terminal. The second coupler 22 includes a second input terminal, a third output terminal and a fourth output terminal, the second input terminal is connected to the second output terminal, and the second coupler 22 is configured to divide the probe optical signal into a first probe signal and a second probe signal and output the first probe signal and the second probe signal through the third output terminal and the fourth output terminal, respectively. The signal acquisition device 40 includes a first photodetector 41 and a second photodetector 42. The first photodetector 41 is connected to the third output terminal. And a second photodetector 42 connected to the output of the light absorbing cell 30. The power collecting board 43 is connected to both the first photodetector 41 and the second photodetector 42, and is used for converting the optical signal into a digital signal. The power acquisition board 43 is also connected to the microcontroller 51 for transmitting digital signals to the microcontroller.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. A laser frequency stabilization system, comprising:
the laser is used for sending an optical signal to be frequency stabilized;
the optical splitting device is connected with the laser and is used for splitting the optical signal to be frequency stabilized into an output optical signal, a first detection signal and a second detection signal, and the splitting ratio of the first detection signal to the second detection signal is 1 to 1;
the light absorption cell is connected with one end of the light splitting device, which is used for outputting the second detection signal, and is used for converting the second detection signal into a third detection signal;
a signal acquisition device for acquiring the first detection signal and the third detection signal;
the signal processing device comprises a microcontroller and a signal feedback circuit which are connected, the microcontroller is also connected with the signal acquisition device, and the feedback circuit is also connected with the laser;
and the temperature control device is used for maintaining the working environment temperature of the laser within a preset temperature range.
2. The laser frequency stabilization system of claim 1, wherein the temperature control device comprises:
the thermistor is used for sensing the working environment temperature of the laser;
the temperature controller is connected with the thermistor and is used for monitoring the resistance value of the thermistor;
the semiconductor refrigerating sheet is connected with the temperature controller and is used for refrigerating or heating;
and two sides of the radiating fin are respectively attached to the semiconductor refrigerating fin and the laser.
3. The laser frequency stabilization system of claim 2, wherein the temperature control device further comprises:
and the heat insulation layer is used for isolating the laser and the thermistor from the outside.
4. The laser frequency stabilization system of claim 3,
the heat insulation layer covers the laser and the thermistor and forms a heat insulation cavity together with the radiating fin.
5. The laser frequency stabilization system of claim 3, wherein the temperature control device further comprises:
and the heat sink is arranged on one side of the semiconductor refrigeration piece, which is far away from the radiating fin, and is used for supporting the semiconductor refrigeration piece.
6. The laser frequency stabilization system of any one of claims 1-5, wherein the light splitting means comprises:
the first coupler comprises a first input end, a first output end and a second output end, the first input end is connected with the laser, and the first coupler is used for dividing the optical signal to be frequency stabilized into the output optical signal and the detection optical signal and outputting the output optical signal and the detection optical signal through the first output end and the second output end respectively;
and the second coupler comprises a second input end, a third output end and a fourth output end, the second input end is connected with the second output end, and the second coupler is used for dividing the detection light signal into the first detection signal and the second detection signal and outputting the first detection signal and the second detection signal through the third output end and the fourth output end respectively.
7. The laser frequency stabilization system of claim 6, wherein the signal acquisition device comprises:
the first photoelectric detector is connected with the third output end;
the second photoelectric detector is connected with the output end of the light absorption cell;
and the power acquisition board is connected with the first photoelectric detector and the second photoelectric detector and is used for converting optical signals into digital signals, and the power acquisition board is also connected with the microcontroller.
8. The laser frequency stabilization system of claim 6,
the first coupler and the second coupler are both optical fiber couplers.
9. The laser frequency stabilization system of claim 1,
the light ray absorption tank is an acetylene absorption tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320109567.7U CN218867635U (en) | 2023-01-19 | 2023-01-19 | Laser instrument frequency stabilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320109567.7U CN218867635U (en) | 2023-01-19 | 2023-01-19 | Laser instrument frequency stabilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218867635U true CN218867635U (en) | 2023-04-14 |
Family
ID=87367096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320109567.7U Active CN218867635U (en) | 2023-01-19 | 2023-01-19 | Laser instrument frequency stabilization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218867635U (en) |
-
2023
- 2023-01-19 CN CN202320109567.7U patent/CN218867635U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100382398C (en) | Method and device for stabilizing double-longitudinal mold laser frequency based on thermoelectric cryostat | |
| WO1997015969A3 (en) | Optical transmission link capable of high temperature operation without cooling with an optical receiver module having temperature independent sensitivity performance and optical transmitter module with laser diode source | |
| CN110850129B (en) | Broadband-controllable photon millimeter wave noise signal generator and signal generating method thereof | |
| CN105186282B (en) | High frequency stabilization tunable narrow-linewidth laser and application method | |
| US20020109892A1 (en) | Light transmitter and optical transfer system | |
| US5717712A (en) | Laser communication system with temperature controlled | |
| CN218867635U (en) | Laser instrument frequency stabilization system | |
| US6698224B2 (en) | Electronic apparatus having at least two electronic parts operating at different temperatures | |
| CN114447760B (en) | Temperature control optical module and working method thereof | |
| Fetterman et al. | Submillimeter heterodyne detection and harmonic mixing using Schottky diodes | |
| CN210321776U (en) | Fiber grating light source system | |
| US5920583A (en) | Dual laser with thermoelectric cooling | |
| CN204615150U (en) | Based on the low drifting laser attemperating unit of double T EC | |
| CN100452571C (en) | Frequency-doubling crystal temperature gradient compensation method temperature control apparatus | |
| CN112134626A (en) | Laser device for realizing optical wavelength and power control by solely adopting temperature compensation | |
| CN208781092U (en) | A kind of temperature controlling box and femtosecond frequency comb of grading control | |
| CN110542444A (en) | fiber grating demodulation system | |
| CN212850508U (en) | Laser device for realizing optical wavelength and power control by solely adopting temperature compensation | |
| CN113131953B (en) | Terahertz security check equipment and radio frequency system and temperature control device thereof | |
| Hou et al. | High power multiple wavelength diode laser stack for DPSSL application without temperature control | |
| Tang et al. | Temperature control circuit design of high-precision laser diode based on type III compensation network | |
| CN218240571U (en) | Temperature control adjustable filter based on grating | |
| Reyes et al. | A cryogenic solid state LO source at 1.9 THz | |
| CN109002070B (en) | Hierarchical control temperature control box, hierarchical control method and femtosecond frequency comb | |
| US20230155679A1 (en) | Temperature-independent Optical Link |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |