CN111193176A - High-precision laser frequency adjusting and stabilizing system - Google Patents
High-precision laser frequency adjusting and stabilizing system Download PDFInfo
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- CN111193176A CN111193176A CN201811350860.2A CN201811350860A CN111193176A CN 111193176 A CN111193176 A CN 111193176A CN 201811350860 A CN201811350860 A CN 201811350860A CN 111193176 A CN111193176 A CN 111193176A
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- laser
- control device
- frequency
- phase locking
- laser cavity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10053—Phase control
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention discloses a high-precision laser frequency regulation and stabilization system which comprises a laser cavity, a frequency detection device, an adjustable filtering control device, a laser phase locking device and an output coupling end, wherein the output coupling end is arranged at one end of the laser cavity, laser is generated in the laser cavity and is coupled to an optical fiber from the output coupling end, the frequency detection device is arranged in the laser cavity or serves as a separating part outside the laser cavity, the adjustable filtering control device and the laser phase locking device are arranged in the laser cavity, the output end of the frequency detection device is in signal connection with the input end of the adjustable filtering control device, and the output end of the adjustable filtering control device is in signal connection with the input end of the laser phase locking device. The laser output frequency of the invention calibrates the frequency detection device according to the design requirement, and the calibrated system drives the adjustable filtering control device according to the working requirement. The laser frequency change caused by external factors is adjusted by the laser phase locking device, so that the frequency fluctuation is stabilized in a certain range.
Description
Technical Field
The invention relates to the field of lasers, in particular to a high-precision laser frequency adjusting and stabilizing system.
Background
With the wider application range of the laser, the requirement on the stability of the output frequency of the laser is higher and higher. The frequency stabilizing device adopted by the existing laser realizes the locking of the laser frequency by utilizing a high-fineness Fabry-Perot optical resonant cavity. The method comprises the steps of obtaining a reflection signal of an optical resonant cavity through a polarizing optical prism, mixing the reflection signal with a signal sent by a driving source of an electro-optic modulator after the signal is received by a photoelectric detector, and obtaining a deviation-correcting signal of frequency through a low-pass filter to be used as a fast ring and a diffuse ring to be fed back to a frequency modulation port of the driving source of the electro-optic modulator and piezoelectric ceramics of a laser so as to narrow the line width and long-term drift of the laser. However, the above method is difficult to safely eliminate the frequency drift problem of the laser, and the output frequency of the laser needs to be stabilized by other means.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-precision laser frequency adjustment and stabilization system.
The technical scheme of the invention is as follows: a high-precision laser frequency adjustment and stabilization system comprises a laser cavity, a frequency detection device, an adjustable filtering control device, a laser phase locking device and an output coupling end, wherein the output coupling end is arranged at one end of the laser cavity, laser is generated in the laser cavity and is output from the output coupling end to be coupled onto an optical fiber, the frequency detection device is arranged in the laser cavity or serves as a separated part outside the laser cavity, the adjustable filtering control device and the laser phase locking device are arranged in the laser cavity, the output end of the frequency detection device is in signal connection with the input end of the adjustable filtering control device, and the output end of the adjustable filtering control device is in signal connection with the input end of the laser phase locking device.
Further, the frequency detection device is composed of an optical component, a detection element and a signal processing circuit.
Further, the adjustable filter control device is composed of an adjustable filter element and a drive circuit.
Further, the laser phase locking device is composed of an optical element and a driving circuit, wherein the optical element is a separated element in the laser cavity or a part of the laser cavity.
Further, the laser cavity is composed of optical and mechanical components, such that laser cavity damage is less than gain to produce laser light.
Further, the output coupling end is composed of one or more optical mechanical parts.
Further, all parts of the high-precision laser frequency adjusting and stabilizing system are controlled by a circuit.
Compared with the prior art, the invention has the beneficial effects that: the laser output frequency of the invention can calibrate the frequency detection device according to the design requirement, and the calibrated system drives the adjustable filtering control device according to the working requirement. The laser frequency change caused by external factors is adjusted by the laser phase locking device, so that the frequency fluctuation is stabilized in a certain range.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic system composition diagram of a high-precision laser frequency adjustment and stabilization system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Examples
Fig. 1 shows a high-precision laser frequency adjustment stabilizing system provided by an embodiment of the present invention, which comprises a laser cavity 1, a frequency detection device 2, an adjustable filtering control device 3, a laser phase locking device 4 and an output coupling end 5, all the components are controlled by a circuit, the output coupling end 5 is arranged at one end of the laser cavity 1, the laser cavity 1 consists of optical and mechanical components, so that the damage in the laser cavity 1 is less than the gain to generate laser, and outputs laser from an output coupling end 5, the output coupling end 5 is composed of one or more optical mechanical parts, thereby efficiently coupling the output laser light to the optical fiber, the frequency detection means 2 being arranged within the laser cavity 1 or as a separate component outside the laser cavity 1, or being part of the laser cavity 1, the adjustable filtering control device 3 and the laser phase locking device 4 are both arranged in the laser cavity 1.
The output end of the frequency detection device 5 is in signal connection with the input end of the adjustable filtering control device 3, and the output end of the adjustable filtering control device 3 is in signal connection with the input end of the laser phase locking device 4.
In a specific structural design, the frequency detection device 5 is composed of an optical component, a detection element and a signal processing circuit.
The adjustable filter control device 3 is composed of an adjustable filter element and a drive circuit.
The laser phase locking device 4 is composed of an optical element and a driving circuit, and the optical element is a separation element in the laser cavity 1 or a part of the laser cavity 1.
The working principle is as follows: the laser output frequency calibrates the frequency detection device 2 according to the design requirement, and the calibrated system drives the adjustable filtering control device 3 according to the working requirement. The laser frequency change caused by external factors is adjusted by the laser phase locking device 4, so that the frequency fluctuation is stabilized in a certain range.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a high accuracy laser frequency adjusts stable system which characterized in that: the tunable filter control device and the laser phase locking device are arranged in the laser cavity, the output coupling end is connected with an input end of the laser phase locking device through a signal, the tunable filter control device and the laser phase locking device are arranged in the laser cavity, the output end of the tunable filter control device is connected with the input end of the tunable filter control device through a signal, and the output end of the tunable filter control device is connected with the input end of the laser phase locking device through a signal.
2. A high precision laser frequency adjustment stabilization system according to claim 1, characterized in that: the frequency detection device consists of an optical component, a detection element and a signal processing circuit.
3. A high precision laser frequency adjustment stabilization system according to claim 1, characterized in that: the adjustable filtering control device consists of an adjustable filtering element and a driving circuit.
4. A high precision laser frequency adjustment stabilization system according to claim 1, characterized in that: the laser phase locking device consists of an optical element and a driving circuit, wherein the optical element is a separation element in a laser cavity or a part of a laser cavity.
5. A high precision laser frequency adjustment stabilization system according to claim 1, characterized in that: the laser cavity is composed of optical and mechanical components, so that the laser cavity damage is smaller than the gain to generate laser.
6. A high precision laser frequency adjustment stabilization system according to claim 1, characterized in that: the output coupling end is composed of one or more optical mechanical parts.
7. A high precision laser frequency regulation stabilizing system as claimed in any one of claims 1 to 6, wherein: all parts of the high-precision laser frequency adjusting and stabilizing system are controlled by circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811350860.2A CN111193176A (en) | 2018-11-14 | 2018-11-14 | High-precision laser frequency adjusting and stabilizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811350860.2A CN111193176A (en) | 2018-11-14 | 2018-11-14 | High-precision laser frequency adjusting and stabilizing system |
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| Publication Number | Publication Date |
|---|---|
| CN111193176A true CN111193176A (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811350860.2A Pending CN111193176A (en) | 2018-11-14 | 2018-11-14 | High-precision laser frequency adjusting and stabilizing system |
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| CN (1) | CN111193176A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1524327A (en) * | 2001-07-06 | 2004-08-25 | 英特尔公司 | Tunable laser control system |
| CN101719628A (en) * | 2009-11-23 | 2010-06-02 | 北京优立光太科技有限公司 | Portable semiconductor laser frequency stabilizer |
| CN102629731A (en) * | 2012-02-14 | 2012-08-08 | 浙江嘉莱光子技术有限公司 | Control method for simultaneously stabilizing laser wavelength and power and control device thereof |
| CN102629066A (en) * | 2012-04-05 | 2012-08-08 | 清华大学 | Laser source device of coherent anti-Stokes Raman scattering microscopic system and production method thereof |
| CN104104011A (en) * | 2014-08-08 | 2014-10-15 | 武汉光迅科技股份有限公司 | Broadband tunable laser |
| CN104242051A (en) * | 2014-09-18 | 2014-12-24 | 武汉光迅科技股份有限公司 | External cavity tunable laser and cavity mode locking method thereof |
| CN106299993A (en) * | 2016-03-11 | 2017-01-04 | 上海瑞柯恩激光技术有限公司 | Laser device and laser power monitor feedback method |
| CN106953232A (en) * | 2017-05-16 | 2017-07-14 | 深圳新飞通光电子技术有限公司 | A kind of dual-wavelength tunable laser, system and its method for realizing fast frequency hopping |
| CN107490918A (en) * | 2017-08-14 | 2017-12-19 | 中国科学院上海光学精密机械研究所 | A kind of ultra-low noise amplifier in optical frequency standard transmission |
| CN107919916A (en) * | 2016-10-10 | 2018-04-17 | 瞻博网络公司 | Integrated wavelength lock |
-
2018
- 2018-11-14 CN CN201811350860.2A patent/CN111193176A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1524327A (en) * | 2001-07-06 | 2004-08-25 | 英特尔公司 | Tunable laser control system |
| CN101719628A (en) * | 2009-11-23 | 2010-06-02 | 北京优立光太科技有限公司 | Portable semiconductor laser frequency stabilizer |
| CN102629731A (en) * | 2012-02-14 | 2012-08-08 | 浙江嘉莱光子技术有限公司 | Control method for simultaneously stabilizing laser wavelength and power and control device thereof |
| CN102629066A (en) * | 2012-04-05 | 2012-08-08 | 清华大学 | Laser source device of coherent anti-Stokes Raman scattering microscopic system and production method thereof |
| CN104104011A (en) * | 2014-08-08 | 2014-10-15 | 武汉光迅科技股份有限公司 | Broadband tunable laser |
| CN104242051A (en) * | 2014-09-18 | 2014-12-24 | 武汉光迅科技股份有限公司 | External cavity tunable laser and cavity mode locking method thereof |
| CN106299993A (en) * | 2016-03-11 | 2017-01-04 | 上海瑞柯恩激光技术有限公司 | Laser device and laser power monitor feedback method |
| CN107919916A (en) * | 2016-10-10 | 2018-04-17 | 瞻博网络公司 | Integrated wavelength lock |
| CN106953232A (en) * | 2017-05-16 | 2017-07-14 | 深圳新飞通光电子技术有限公司 | A kind of dual-wavelength tunable laser, system and its method for realizing fast frequency hopping |
| CN107490918A (en) * | 2017-08-14 | 2017-12-19 | 中国科学院上海光学精密机械研究所 | A kind of ultra-low noise amplifier in optical frequency standard transmission |
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Application publication date: 20200522 |