CN104090482A - Optical system used for portable atomic clock and control method of optical system - Google Patents
Optical system used for portable atomic clock and control method of optical system Download PDFInfo
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- CN104090482A CN104090482A CN201410363741.6A CN201410363741A CN104090482A CN 104090482 A CN104090482 A CN 104090482A CN 201410363741 A CN201410363741 A CN 201410363741A CN 104090482 A CN104090482 A CN 104090482A
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- laser instrument
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- vcsel laser
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Abstract
The invention discloses an optical system used for a portable atomic clock. The optical system comprises a VCSEL laser device, a lens, a quarter-wave plate, a thermistor measuring circuit, a PID control circuit, a TEC assembly and a photoelectric detector. The VCSEL laser device is respectively and electrically connected with the thermistor measuring circuit, the PID control circuit and the TEC assembly, the VCSEL laser device and the quarter-wave plate are arranged on the two sides of the lens respectively, the side, away from the lens, of the quarter-wave plate is provided with the photoelectric detector, and the VCSEL laser device, the lens, the quarter-wave plate and the photoelectric detector are located on the same straight line. The optical system has the advantages of miniaturization and low power consumption, the size of the optical system is smaller than 10 ml, the power consumption of the optical system is smaller than 6mW, and the optical system can be used for the portable atomic clock.
Description
Technical field
The present invention relates to atomic clock technical field, particularly a kind of optical system for portable atomic clock and control method thereof.
Background technology
In contemporary science and technology, correct time frequency measurement is the basis of satellite navigation location and Network Information.Atomic clock, as precise time frequency source the most at present, has irreplaceable central role in each sciemtifec and technical sphere.Along with the continuous progress of technical merit, more urgent for the demand of the atomic clock of portable low energy consumption, miniaturization.In current Portable novel atomic clock technical field, ion microwave clock and CPT (Coherent Population Trapping) atomic clock is most important two research directions.
Compare with other traditional atomic clocks, ion microwave clock has incomparable superiority.In the application of satellite navigation and space station, the volume of conventional spaceborne rubidium clock is all more than or equal to 3L conventionally both at home and abroad, and by comparison, the frequency stability of ion microwave clock and frequency accuracy are all than the high 1-2 of a spaceborne rubidium clock order of magnitude.CPT atomic clock is Coherent Population Trapping based on atom imprison principle and a kind of New type atom clock of designing, its working mechanism is different from the atomic clocks such as traditional hydrogen, rubidium, caesium, its physical entity part does not need microwave cavity, is current at principle and the technical atomic clock that can realize minimum volume and lowest energy consumption.Because CPT atomic clock self has unique advantage, it not only can meet the demand of the high-end receiver of satellite navigation system ground, and can telecommunication system regularly, on a large scale communication network synchronous and accurately the technical field such as location obtain applying very widely.Because the volume of traditional electro-optical system is larger, power consumption is higher, and traditional electro-optical system cannot meet the requirement of portable atomic clock completely.
Therefore,, in order to realize miniaturization, low-power consumption, high performance portable atomic clock, the optical system that how to realize miniaturization, low-power consumption has become those skilled in the art's technical matters urgently to be resolved hurrily.At present, be starved of a kind of optical system for portable atomic clock, and this optical system is the optical system of miniaturization, low-power consumption.
Summary of the invention
One of object of the present invention is the above-mentioned shortcoming for prior art, and a kind of optical system for portable atomic clock is provided.
Two of object of the present invention is the above-mentioned shortcomings for prior art, and a kind of control method of the optical system for portable atomic clock is provided.
Optical system for portable atomic clock provided by the invention comprises VCSEL laser instrument, lens, quarter-wave plate, thermosensitive resistance measurement circuit, PID control circuit and TEC assembly;
Described VCSEL laser instrument is connected with described thermosensitive resistance measurement circuit, described PID control circuit and described TEC electrical component successively; Described VCSEL laser instrument and described quarter-wave plate are arranged at respectively the both sides of described lens, and the side away from described lens of described quarter-wave plate is provided with photodetector; Described VCSEL laser instrument, described lens, described quarter-wave plate and described photodetector are located along the same line;
Described VCSEL laser instrument is for generation of linearly polarized laser bundle; Described thermosensitive resistance measurement circuit is for measuring the temperature of described VCSEL laser instrument and the temperature signal measuring being sent to described PID control circuit; Described PID control circuit generates temperature control signals and this temperature control signals is sent to described TEC assembly after receiving the temperature signal from described thermosensitive resistance measurement circuit; Described TEC assembly generates drive current and this drive current is sent to described VCSEL laser instrument after receiving the temperature control signals from described PID control circuit, to control the working temperature of described VCSEL laser instrument;
Described lens form line of collimation polarized laser beam after making linearly polarized laser bundle from described VCSEL laser instrument by described lens; Described quarter-wave plate collimates circularly polarized laser bundle from the line of collimation polarized laser beam of described lens by forming after described quarter-wave plate for making.
Preferably, the operation wavelength of described VCSEL laser instrument is 795nm.
Preferably, the power consumption of described VCSEL laser instrument is 4mW, and its volume is 3ml.
Preferably, the working temperature of described VCSEL laser instrument is 70 ℃.
The control method of the optical system for portable atomic clock provided by the invention adopts the described optical system for portable atomic clock, and this control method comprises the steps:
Utilize VCSEL laser instrument to produce linearly polarized laser bundle, this linearly polarized laser bundle transmits to lens; After linearly polarized laser bundle scioptics from VCSEL laser instrument, form line of collimation polarized laser beam, this line of collimation polarized laser beam is transmitted to quarter-wave plate; Line of collimation polarized laser beam from lens collimates circularly polarized laser bundle by formation after quarter-wave plate, and this collimation circularly polarized laser bundle transmits to photodetector;
Utilize photodetector to receive collimation circularly polarized laser bundle the detection by quarter-wave plate;
Utilize thermosensitive resistance measurement circuit measure the temperature of VCSEL laser instrument and the temperature signal measuring is sent to PID control circuit according to the change in resistance of thermistor;
PID control circuit generates temperature control signals and this temperature control signals is sent to TEC assembly after receiving the temperature signal from thermosensitive resistance measurement circuit;
TEC assembly generates drive current and this drive current is sent to VCSEL laser instrument after receiving the temperature control signals from PID control circuit, to control the working temperature of VCSEL laser instrument.
The present invention has following beneficial effect:
Optical system provided by the invention has advantages of miniaturization, low-power consumption, and its volume is less than 10ml, and its power consumption is less than 6mW, and described optical system can be used in portable atomic clock.
Accompanying drawing explanation
The schematic diagram of the optical system for portable atomic clock that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, summary of the invention of the present invention is further described.
As shown in Figure 1, the optical system for portable atomic clock that the present embodiment provides comprises VCSEL (vertical cavity surface lase, Vertical Cavity Surface Emitting Laser) laser instrument 1, lens 2, quarter-wave plate 3, thermosensitive resistance measurement circuit 4, PID (proportion integration differentiation, Proportion Integration Differentiation) control circuit 5, TEC (semiconductor cooler, Thermoelectric Cooler) assembly 6 and photodetector 7.
VCSEL laser instrument 1 is electrically connected to thermosensitive resistance measurement circuit 4, PID control circuit 5 and TEC assembly 6 successively.VCSEL laser instrument 1 and quarter-wave plate 3 are arranged at respectively the both sides of lens 2, and the side away from lens 2 of quarter-wave plate 3 is provided with photodetector 7.VCSEL laser instrument 1, lens 2, quarter-wave plate 3 and photodetector 7 are located along the same line.
VCSEL laser instrument 1 is for generation of linearly polarized laser bundle.Thermosensitive resistance measurement circuit 4 is for measuring the temperature of VCSEL laser instrument 1 and the temperature signal measuring is sent to PID control circuit 5 according to the change in resistance of thermistor.PID control circuit 5 generates temperature control signals and this temperature control signals is sent to TEC assembly 6 after receiving the temperature signal from thermosensitive resistance measurement circuit 4.TEC assembly 6 generates drive current and this drive current is sent to VCSEL laser instrument 1 after receiving the temperature control signals from PID control circuit 5, to control the working temperature of VCSEL laser instrument 1.
Lens 2 are for making the rear formation line of collimation polarized laser beam of linearly polarized laser bundle scioptics 2 from VCSEL laser instrument 1.Quarter-wave plate 3 collimates circularly polarized laser bundle from the line of collimation polarized laser beam of lens 2 by the rear formation of quarter-wave plate 3 for making.Photodetector 7 is for receiving the collimation circularly polarized laser bundle by quarter-wave plate 3.
Preferably, the operation wavelength of VCSEL laser instrument 1 is 795nm.Preferably, the power consumption of VCSEL laser instrument 1 is 4mW, and its volume is 3ml.Preferably, the working temperature of VCSEL laser instrument 1 is 70 ℃.
The control method of the optical system for portable atomic clock that the present embodiment provides comprises the steps:
S1: utilize VCSEL laser instrument 1 to produce linearly polarized laser bundle, this linearly polarized laser bundle is to lens 2 transmission; From the rear formation line of collimation polarized laser beam of linearly polarized laser bundle scioptics 2 of VCSEL laser instrument 1, this line of collimation polarized laser beam is to quarter-wave plate 3 transmission; Line of collimation polarized laser beam from lens 2 collimates circularly polarized laser bundle by the rear formation of quarter-wave plate 3, and this collimation circularly polarized laser bundle is to photodetector 7 transmission;
S2: utilize photodetector 7 to receive and survey by the collimation circularly polarized laser bundle of quarter-wave plate 3;
S3: utilize thermosensitive resistance measurement circuit 4 measure the temperature of VCSEL laser instrument 1 and the temperature signal measuring is sent to PID control circuit 5 according to the change in resistance of thermistor;
S4:PID control circuit 5 generates temperature control signals and this temperature control signals is sent to TEC assembly 6 after receiving the temperature signal from thermosensitive resistance measurement circuit 4;
S5:TEC assembly 6 generates drive current and this drive current is sent to VCSEL laser instrument 1 after receiving the temperature control signals from PID control circuit 5, to control the working temperature of VCSEL laser instrument 1.
The optical system that the present embodiment provides has advantages of miniaturization, low-power consumption, and its volume is less than 10ml, and its power consumption is less than 6mW, and described optical system can be used in portable atomic clock.
Should be appreciated that the above detailed description of technical scheme of the present invention being carried out by preferred embodiment is illustrative and not restrictive.Those of ordinary skill in the art modifies reading the technical scheme that can record each embodiment on the basis of instructions of the present invention, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (5)
1. for an optical system for portable atomic clock, it is characterized in that, this optical system comprises VCSEL laser instrument, lens, quarter-wave plate, thermosensitive resistance measurement circuit, PID control circuit, TEC assembly and photodetector;
Described VCSEL laser instrument is connected with described thermosensitive resistance measurement circuit, described PID control circuit and described TEC electrical component successively; Described VCSEL laser instrument and described quarter-wave plate are arranged at respectively the both sides of described lens, and the side away from described lens of described quarter-wave plate is provided with described photodetector; Described VCSEL laser instrument, described lens, described quarter-wave plate and described photodetector are located along the same line;
Described VCSEL laser instrument is for generation of linearly polarized laser bundle; Described thermosensitive resistance measurement circuit is for measuring the temperature of described VCSEL laser instrument and the temperature signal measuring is sent to described PID control circuit according to the change in resistance of thermistor; Described PID control circuit generates temperature control signals and this temperature control signals is sent to described TEC assembly after receiving the temperature signal from described thermosensitive resistance measurement circuit; Described TEC assembly generates drive current and this drive current is sent to described VCSEL laser instrument after receiving the temperature control signals from described PID control circuit, to control the working temperature of described VCSEL laser instrument;
Described lens form line of collimation polarized laser beam after making linearly polarized laser bundle from described VCSEL laser instrument by described lens; Described quarter-wave plate collimates circularly polarized laser bundle from the line of collimation polarized laser beam of described lens by forming after described quarter-wave plate for making.
2. the optical system for portable atomic clock according to claim 1, is characterized in that, the operation wavelength of described VCSEL laser instrument is 795nm.
3. the optical system for portable atomic clock according to claim 1, is characterized in that, the power consumption of described VCSEL laser instrument is 4mW, and its volume is 3ml.
4. the optical system for portable atomic clock according to claim 1, is characterized in that, the working temperature of described VCSEL laser instrument is 70 ℃.
5. for a control method for the optical system of portable atomic clock, this control method adopts the optical system for portable atomic clock described in claim 1-4 any one, it is characterized in that, this control method comprises the steps:
Utilize VCSEL laser instrument to produce linearly polarized laser bundle, this linearly polarized laser bundle transmits to lens; After linearly polarized laser bundle scioptics from VCSEL laser instrument, form line of collimation polarized laser beam, this line of collimation polarized laser beam is transmitted to quarter-wave plate; Line of collimation polarized laser beam from lens collimates circularly polarized laser bundle by formation after quarter-wave plate, and this collimation circularly polarized laser bundle transmits to photodetector;
Utilize photodetector to receive collimation circularly polarized laser bundle the detection by quarter-wave plate;
Utilize thermosensitive resistance measurement circuit measure the temperature of VCSEL laser instrument and the temperature signal measuring is sent to PID control circuit according to the change in resistance of thermistor;
PID control circuit generates temperature control signals and this temperature control signals is sent to TEC assembly after receiving the temperature signal from thermosensitive resistance measurement circuit;
TEC assembly generates drive current and this drive current is sent to VCSEL laser instrument after receiving the temperature control signals from PID control circuit, to control the working temperature of VCSEL laser instrument.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410363741.6A CN104090482A (en) | 2014-07-28 | 2014-07-28 | Optical system used for portable atomic clock and control method of optical system |
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| CN201410363741.6A CN104090482A (en) | 2014-07-28 | 2014-07-28 | Optical system used for portable atomic clock and control method of optical system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297598A (en) * | 2014-10-20 | 2015-01-21 | 北京无线电计量测试研究所 | Multi-parameter testing device and method of VCSEL |
| US20220190554A1 (en) * | 2020-12-16 | 2022-06-16 | Macom Technology Solutions Holdings, Inc. | Pam driver with distributed modulation current setpoint feedback |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6320472B1 (en) * | 1999-01-26 | 2001-11-20 | Kernco, Inc. | Atomic frequency standard |
| US20090001979A1 (en) * | 2007-06-27 | 2009-01-01 | Hitachi High-Technologies Corporation | Magnetic field measuring apparatus |
| CN102063054A (en) * | 2011-02-22 | 2011-05-18 | 合肥威师智能电子电器厂 | CPT (Coherent Population Trapping) atomic clock |
| CN102778839A (en) * | 2011-12-20 | 2012-11-14 | 中国科学院武汉物理与数学研究所 | Physical system device of passive type CPT (Coherent Population Trapping) atomic clock |
| US20130200955A1 (en) * | 2012-02-07 | 2013-08-08 | Seiko Epson Corporation | Light-emitting device module and atomic oscillator |
| CN103823356A (en) * | 2014-03-07 | 2014-05-28 | 中国科学院武汉物理与数学研究所 | PXI (PCI eXtensions for Instrumentation) system-based passive CPT (Coherent Population Trapping) atomic clock experimental facility and method |
-
2014
- 2014-07-28 CN CN201410363741.6A patent/CN104090482A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6320472B1 (en) * | 1999-01-26 | 2001-11-20 | Kernco, Inc. | Atomic frequency standard |
| US20090001979A1 (en) * | 2007-06-27 | 2009-01-01 | Hitachi High-Technologies Corporation | Magnetic field measuring apparatus |
| CN102063054A (en) * | 2011-02-22 | 2011-05-18 | 合肥威师智能电子电器厂 | CPT (Coherent Population Trapping) atomic clock |
| CN102778839A (en) * | 2011-12-20 | 2012-11-14 | 中国科学院武汉物理与数学研究所 | Physical system device of passive type CPT (Coherent Population Trapping) atomic clock |
| US20130200955A1 (en) * | 2012-02-07 | 2013-08-08 | Seiko Epson Corporation | Light-emitting device module and atomic oscillator |
| CN103823356A (en) * | 2014-03-07 | 2014-05-28 | 中国科学院武汉物理与数学研究所 | PXI (PCI eXtensions for Instrumentation) system-based passive CPT (Coherent Population Trapping) atomic clock experimental facility and method |
Non-Patent Citations (4)
| Title |
|---|
| 史学明: "CPT原子频标电路的研究与设计", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, no. 3, 15 March 2013 (2013-03-15) * |
| 张振伟: "CPT原子频标的参数研究和电路优化", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, no. 01, 15 January 2014 (2014-01-15) * |
| 徐建: "被动型相干布局囚禁原子钟系统关键技术研究", 《中国博士学位论文全文数据库 工程科技II辑》, no. 07, 15 July 2012 (2012-07-15) * |
| 赵军: "可应用于芯片级光学器件上VCSEL激光器控制系统", 《中国优秀硕士学位论文全文数据库 信息科技辑》, no. 11, 15 November 2009 (2009-11-15) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297598A (en) * | 2014-10-20 | 2015-01-21 | 北京无线电计量测试研究所 | Multi-parameter testing device and method of VCSEL |
| CN104297598B (en) * | 2014-10-20 | 2018-04-17 | 北京无线电计量测试研究所 | A kind of multi-parameters test device and method of VCSEL |
| US20220190554A1 (en) * | 2020-12-16 | 2022-06-16 | Macom Technology Solutions Holdings, Inc. | Pam driver with distributed modulation current setpoint feedback |
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Application publication date: 20141008 |