CN114675524A - Miniature CPT atomic clock physical system device - Google Patents
Miniature CPT atomic clock physical system device Download PDFInfo
- Publication number
- CN114675524A CN114675524A CN202210363515.2A CN202210363515A CN114675524A CN 114675524 A CN114675524 A CN 114675524A CN 202210363515 A CN202210363515 A CN 202210363515A CN 114675524 A CN114675524 A CN 114675524A
- Authority
- CN
- China
- Prior art keywords
- cpt
- physical system
- triangular
- system device
- mirror
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 40
- 150000001340 alkali metals Chemical group 0.000 claims abstract description 25
- 230000001427 coherent effect Effects 0.000 claims abstract description 21
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 32
- 239000007789 gas Substances 0.000 claims description 21
- 239000011261 inert gas Substances 0.000 claims description 6
- 230000003595 spectral effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000002310 reflectometry Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/14—Apparatus for producing preselected time intervals for use as timing standards using atomic clocks
- G04F5/145—Apparatus for producing preselected time intervals for use as timing standards using atomic clocks using Coherent Population Trapping
Abstract
The invention relates to the technical field of Coherent Population Trapping (CPT) atomic clocks, in particular to a micro CPT atomic clock physical system device, which comprises a Bias-Tee biaser and a VCSEL laser, wherein the Bias-Tee biaser is used for coupling direct current and microwave and inputting the direct current and the microwave to the VCSEL laser, and the VCSEL laser is used for outputting coherent frequency modulation multicolor linearly polarized light; the laser device further comprises a lens, an attenuation sheet, a quarter-wave plate and a triangular atom gas chamber which are sequentially arranged along the emitting light path of the VCSEL laser device. The invention relates to a micro CPT atomic clock physical system device, which combines a triangular alkali metal atom air chamber and an optical triangular FP cavity, eliminates fundamental frequency and even-order sideband components in polychromatic light, and has low CPT resonance signal background; the proportion of the effective coherent bichromatic light to the total power of the laser is increased, and the frequency shift of the CPT resonance signal is small; the effective coherent bicolor light and alkali metal atoms have multiple actions, the action optical path is increased, and the CPT resonance signal amplitude is improved.
Description
Technical Field
The invention relates to the technical field of Coherent Population Trapping (CPT) atomic clocks, in particular to a miniature CPT atomic clock physical system device.
Background
The CPT atomic clock obtains the CPT resonance signal serving as the microwave frequency discrimination signal by utilizing the action of the bicolor light and the atoms, is a microwave atomic clock without a microwave resonant cavity, is easy to realize the atomic clock with small volume and low power consumption, and has stronger application competitiveness in the aspects of a communication network system, a navigation positioning system and the like.
At present, the popular scheme of the micro CPT atomic clock physical system is that a microwave modulation Vertical Cavity Surface Emitting Laser (VCSEL) outputs coherent frequency modulation multicolor light by direct current, wherein two light frequency components which resonate with alkali metal atoms, generally +/-1 order sidebands, are used for preparing coherent bichromatic light in a CPT state, the coherent bichromatic light reacts with the alkali metal atoms and then detects a transmission light beam, and a CPT resonance signal is extracted from the obtained photoelectric signal.
This solution has two disadvantages: 1. the coherent bicolor light and the alkali metal atoms have short optical path, so that the amplitude of the obtained CPT resonance signal is lower; 2. in addition to the two optical frequency components that resonate with the alkali metal atom, the coherent frequency modulated polychromatic light, which also includes optical frequency components that are detuned from the alkali metal atom (typically, the fundamental frequency, ± 2 order sidebands, ± 3 order sidebands, …) is transmitted and detected, resulting in a higher background of the obtained CPT resonance signal.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a miniature CPT atomic clock physical system device to solve the problems of low amplitude of a CPT resonance signal and high background noise signal.
The technical scheme for solving the technical problems is as follows: a micro CPT atomic clock physical system device comprises a Bias-Tee biaser and a VCSEL laser, wherein the Bias-Tee biaser is used for coupling direct current and microwaves and inputting the direct current and the microwaves to the VCSEL laser, and the VCSEL laser is used for outputting coherent frequency modulation multicolor linearly polarized light; the laser device also comprises a lens, an attenuation sheet, a quarter-wave plate and a triangular atomic gas chamber which are sequentially arranged along the emission light path of the VCSEL laser device; the lens is used for converting divergent light emitted by the VCSEL laser into parallel beams; the attenuation sheet is used for adjusting the light intensity of the light beam; the quarter-wave plate is used for converting linearly polarized light into circularly polarized light;
providing alkali metal atoms for resonating with circularly polarized light in the triangular atom gas chamber; three vertex angles of the triangular atom air chamber are sequentially provided with a concave surface partial reflection partial transmission mirror, a concave surface reflection mirror and a plane partial reflection partial transmission mirror; a photoelectric detector is arranged on an emergent light path of the planar partial reflection partial transmission mirror; the circularly polarized light beam is incident along the concave partial reflection partial transmission mirror, is reflected by the concave reflection mirror, is incident to the plane partial reflection partial transmission mirror, is partially transmitted out and is detected by the photoelectric detector, and is partially reflected and then is incident to the concave partial reflection partial transmission mirror to form an optical loop.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the concave partial reflection partial transmission mirror, the concave reflection mirror and the plane partial reflection partial transmission mirror form an optical FP (Fabry-Perot) cavity, and the length of the optical FP cavity is the sum of three side lengths of the triangular atomic gas chamber, namely the length L of the FP cavity is equal to L1+L2+L3。
The micro-CPT atomic clock physical system device of claim, wherein the optical FP cavity free spectral path FSR:
the frequency difference between the two low energy states of the alkali metal atom used as CPT configuration is Vhfs；
The optical FP cavity length L satisfies:
c is the speed of light, i.e.
Further, the alkali metal atom is87Rb or133Cs。
Further, inert gas is filled in the triangular atom gas chamber.
Further, the inert gas is Ar or Ne.
Furthermore, the outer layer of the triangular atomic gas chamber is provided with a solenoid coil, and a magnetic shielding shell is arranged outside the solenoid coil.
Further, the triangular atomic gas chamber, the concave partial reflection partial transmission mirror, the concave reflection mirror and the plane partial reflection partial transmission mirror are integrated into a single chip.
The beneficial effects of the invention are: the invention relates to a micro CPT atomic clock physical system device, which combines a triangular alkali metal atom air chamber and an optical triangular FP cavity, eliminates fundamental frequency and even-order sideband components in polychromatic light, and has low CPT resonance signal background; the proportion of the effective coherent bichromatic light to the total power of the laser is increased, and the frequency shift of the CPT resonance signal is small; the effective coherent bicolor light and alkali metal atoms have multiple actions, the action optical path is increased, and the CPT resonance signal amplitude is improved.
Drawings
FIG. 1 is a diagram of a conventional micro-CPT atomic clock physical system device;
FIG. 2 is a schematic diagram of the overall structure of the physical system device of the micro CPT atomic clock of the present invention;
FIG. 3(a) is a schematic diagram of the cavity length of the FP chamber of the device of the present invention, and FIG. 3(b) is a schematic diagram of the action of circularly polarized light and alkali metal atoms, |1>And |2>Two energy levels, |3, of the number m ═ 0 of ground state magnetic quanta of alkali metal atoms, respectively>An energy level of an alkali metal atom excited state F ═ 2 and a magnetic quantum number m ═ 1, VhfsIs energy level |1>And |2>Corresponding frequency difference between, v1、v2Respectively coupled with coherent bichromatic light (+ -1 order sideband);
FIG. 4 is a schematic diagram showing the relationship between the sideband frequencies of each order of frequency-modulated coherent polychromatic light emitted by a VCSEL laser and the FSR of an optical FP cavity, wherein the FSR represents the free spectral range of the optical FP cavity, the ordinate represents the normalized transmittance of the FP cavity, the abscissa represents the sideband of the second order, and 0 represents the fundamental frequency;
fig. 5 is a CPT resonance signal recorded in an embodiment of the present invention, and fig. 5(a) is a CPT resonance signal obtained by the apparatus of fig. 2; fig. 5(b) shows the CPT resonance signal obtained by the apparatus of fig. 1.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the device comprises a Bias-Tee biaser, 2, a VCSEL laser, 3, a lens, 4, an attenuation sheet, 5, a quarter-wave plate, 6, a triangular atom air chamber, 7, a concave partial reflection partial transmission mirror, 8, a concave reflection mirror, 9, a planar partial reflection partial transmission mirror, 10, a photoelectric detector, 11 and an atom air chamber.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
It should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are intended to be construed broadly, as if they were connected either fixedly or removably, or as integrally formed structures. The specific meaning of such terms in this patent may be understood by one of ordinary skill in the art as appropriate.
The current scheme of the micro-CPT atomic clock physical system is shown in figure 1, and two main problems of low CPT resonance signal amplitude and high background signal exist.
For example, patent (CN102778839B) provides a solution for realizing orthogonal circularly polarized light and simultaneously realizing CPT resonance signal by atomic interaction, which can obtain enhanced CPT resonance signal and improve the signal-to-noise ratio and contrast of the CPT signal. However, the optical frequency component detuned with the alkali metal atom in the scheme is detected by the photodetector, which forms the background noise of the CPT signal, and the optical path length of the effective optical frequency component affected with the alkali metal atom is short, which does not solve the above two disadvantages of the physical system of the micro CPT atomic clock.
The patent (CN105242521A) provides a method for implementing a micro atomic clock physical system by using elliptical polarized light to resonate with atoms and differentially detecting the optical rotation effect generated by the elliptical polarized light, which eliminates the background noise generated by the optical frequency component without interaction with atoms in the multi-color light output by the VCSEL.
Therefore, the invention provides a miniature CPT atomic clock physical system device to solve the problems in order to maintain the advantages that CPT resonance signals of a popular miniature CPT atomic clock physical system are less influenced by the change of the environmental magnetic field intensity, the laser frequency is easy to implement frequency stabilization and the like and simultaneously eliminate the defects of the problems.
The embodiment of the invention is as follows:
as shown in fig. 2, the micro CPT atomic clock physical system device designed by the present invention includes a Bias-Tee biaser 1 and a VCSEL laser 2, wherein the Bias-Tee biaser 1 is configured to couple a direct current and a microwave and input the direct current and the microwave to the VCSEL laser 2, set an input direct current of 1.2mA, set an input microwave frequency of 3.485GHz, and control a temperature of 30.5 degrees centigrade in the VCSEL laser 2 model of ULM 795-01-TN; the VCSEL laser 2 is used for outputting coherent frequency modulation multicolor linear polarized light with the wavelength of 794.98 nm; the laser device also comprises a lens 3, an attenuation sheet 4, a quarter wave plate 5 and a triangular atomic gas chamber 6 which are sequentially arranged along the emission light path of the VCSEL laser 2; the lens 3 is used for converting divergent light emitted by the VCSEL laser 2 into parallel beams; the attenuation sheet 4 is used for adjusting the light intensity of the light beam; the quarter-wave plate 5 is used for converting linearly polarized light into circularly polarized light.
As shown in fig. 3, alkali metal atoms for resonating with circularly polarized light are provided in the triangular atom gas cell 6; three vertex angles of the triangular atomic gas chamber 6 are sequentially provided with a concave partial reflection partial transmission mirror 7, a concave reflection mirror 8 and a plane partial reflection partial transmission mirror 9; a photoelectric detector 10 is arranged on an emergent light path of the plane part reflection part transmission mirror 9; the circularly polarized light beam enters along the concave partial reflection partial transmission mirror 7, is reflected by the concave reflection mirror 8, enters the plane partial reflection partial transmission mirror 9, is partially transmitted out and detected by the photoelectric detector 10, and enters the concave partial reflection partial transmission mirror 7 after being partially reflected to form an optical loop.
Wherein the alkali metal atom is87Rb or133Cs, preferably87An Rb atom; the triangular atomic gas chamber 6 is also filled with inert gas, and the inert gas is Ar or Ne.
Specifically, the concave partial reflection partial transmission mirror 7, the concave reflection mirror 8, and the plane partial reflection partial transmission mirror 9 constitute an optical FP cavity, and the optical FP cavity length is the sum of three side lengths of the triangular atomic gas cell 6, that is, the FP cavity length L ═ L1+L2+L3。
Optical FP cavity free spectral path:
the frequency difference between the two low energy states of the alkali metal atom used as CPT configuration is Vhfs；
The optical FP cavity length L meets the following conditions:
c is the speed of light, i.e.
When the above conditions are satisfied, a fundamental order sideband component in the frequency-modulated polychromatic light output by the VCSEL laser 2 resonates with the optical FP cavity and can transmit through the optical FP cavity; the fundamental frequency component, the even-order sideband component and the optical FP cavity are detuned and cannot penetrate through the optical FP cavity, so that useless background noise of the CPT resonance signal detected by the photoelectric detector 10 is reduced, and the quality of the CPT resonance signal is improved.
Furthermore, the outer layer of the triangular atomic gas chamber 6 is provided with a solenoid coil, and a magnetic shielding shell is arranged outside the solenoid coil to shield the interference of an external environment magnetic field.
The micro CPT atomic clock physical system device provided by the invention combines an alkali metal atom gas chamber with an optical triangular Fabry-Perot resonant cavity (FP cavity), and enables the optical FP cavity to resonate with a base order sideband (including a +/-1 order sideband, namely effective coherent bichromatic light) in coherent polychromatic light emitted by a VCSEL laser 2 and detune with an even order sideband (fundamental frequency, +/-2, +/-4 order sideband, …) by setting a proper optical FP cavity length, so that background noise generated by the even order sideband is eliminated by detecting a transmission light signal, and the background of the obtained CPT resonance signal is reduced. The ratio of effective coherent bichromatic light to the total power of the laser is improved, the coherent bichromatic light and alkali metal atoms act in the triangular optical FP cavity for multiple times, the acting optical path is increased, the amplitude of a CPT resonance signal is effectively improved, and the micro CPT atomic clock with higher frequency stability is realized.
Specifically, in the present embodiment, the reflectivity of the concave partial reflection transmission mirror 7 is 95%, and the focal length is 10 mm; the reflectivity of the concave reflector 8 is more than 99 percent, and the focal length is 15 mm; the reflectivity of the plane partial reflection partial transmission mirror 9 is 98%, and the optical FP cavity length L is set to 44mm, see in particular FIG. 3, L1Is 14mm and L2Is 15mm, L3Is 15 mm.87The Rb atom serves as the frequency difference V between the two lower energy states of the CPT configurationhfsIs 6.8GHz and meets the following requirements:
referring to fig. 4, the FP cavity is permeable to the ± 1 st order and the ± 3 rd order equi-basic sideband components, and is impermeable to the fundamental frequency and the ± 2 nd order equi-even sideband components, so that the background noise of the CPT resonance signal detected by the photodetector 10 is reduced, and the quality of the CPT resonance signal is improved.
It should be added that the triangular atomic gas chamber 6, the concave partial reflection partial transmission mirror 7, the concave reflection mirror 8 and the plane partial reflection partial transmission mirror 9 are integrated into a single chip, and can be integrated by a Micro Electro Mechanical System (MEMS) technology, and the optical FP cavity length is designed and strictly controlled by the MEMS technology.
Fig. 5 is a CPT resonance signal recorded in an experiment under the same experiment conditions in this embodiment, fig. 5(a) is the CPT resonance signal obtained by the apparatus in fig. 2, and fig. 5(b) is the CPT resonance signal obtained by the apparatus in fig. 1, it can be seen from the figure that the background noise of the CPT resonance signal obtained by the apparatus of the present invention is 0.8V, while the background noise of the popular CPT physical system is 1.8V, and in addition, the apparatus of the present invention has a larger amplitude and a narrower signal line width than the CPT resonance signal obtained by the popular apparatus, which indicates that the apparatus of the present invention can improve the quality of the CPT resonance signal and realize the micro CPT atomic clock with a better frequency stability.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A micro CPT atomic clock physical system device comprises a Bias-Tee biaser (1) and a VCSEL laser (2), wherein the Bias-Tee biaser (1) is used for coupling direct current and microwaves and inputting the direct current and the microwaves to the VCSEL laser (2), and the VCSEL laser (2) is used for outputting coherent frequency modulation multicolor linearly polarized light; the laser is characterized by further comprising a lens (3), an attenuation sheet (4), a quarter-wave plate (5) and a triangular atomic gas chamber (6) which are sequentially arranged along the emission light path of the VCSEL laser (2); the lens (3) is used for converting divergent light emitted by the VCSEL laser (2) into parallel beams; the attenuation sheet (4) is used for adjusting the light intensity of the light beam; the quarter-wave plate (5) is used for converting linearly polarized light into circularly polarized light;
alkali metal atoms for resonating with circularly polarized light are provided in the triangular atom gas chamber (6); three vertex angles of the triangular atomic gas chamber (6) are sequentially provided with a concave partial reflection partial transmission mirror (7), a concave reflection mirror (8) and a plane partial reflection partial transmission mirror (9); a photoelectric detector (10) is arranged on an emergent light path of the plane part reflection part transmission mirror (9); the circularly polarized light beam enters along the concave part reflecting part transmission mirror (7), is reflected by the concave reflection mirror (8), enters the plane part reflecting part transmission mirror (9), is partially transmitted out and detected by the photoelectric detector (10), and enters the concave part reflecting part transmission mirror (7) after being partially reflected to form an optical loop.
2. The micro CPT atomic clock physical system device according to claim 1, wherein the concave partially reflective partially transmissive mirror (7), the concave reflective mirror (8) and the planar partially reflective partially transmissive mirror (9) form an optical FP cavity, and the optical FP cavity length is the sum of three side lengths of the triangular atomic gas chamber (6), that is, the FP cavity length L ═ L1+L2+L3。
3. The micro-CPT atomic clock physical system device of claim 2, wherein the optical FP cavity free spectral path FSR:
the frequency difference between the two low energy states of the alkali metal atom used as CPT configuration is Vhfs；
The optical FP cavity length L satisfies:
c is the speed of light, i.e.
4. The physical system device of miniature CPT atomic clock as set forth in claim 1, wherein said alkali metal atom is87Rb or133Cs。
5. The micro-CPT atomic clock physical system device according to claim 1, wherein the triangular atomic gas chamber (6) is further filled with inert gas.
6. The micro-CPT atomic clock physical system device according to claim 5, wherein the inert gas is Ar or Ne.
7. The physical system device of a miniature CPT atomic clock as claimed in claim 1, wherein the outer layer of the triangular atomic gas chamber (6) is provided with a solenoid coil, and a magnetic shielding shell is arranged outside the solenoid coil.
8. A micro CPT atomic clock physical system device according to any one of claims 1 to 7, wherein the triangular atomic gas cell (6) is integrated with the concave partially reflective partially transmissive mirror (7), the concave reflective mirror (8) and the planar partially reflective partially transmissive mirror (9) as a single monolithic chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210363515.2A CN114675524B (en) | 2022-04-08 | 2022-04-08 | Miniature CPT atomic clock physical system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210363515.2A CN114675524B (en) | 2022-04-08 | 2022-04-08 | Miniature CPT atomic clock physical system device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114675524A true CN114675524A (en) | 2022-06-28 |
| CN114675524B CN114675524B (en) | 2024-02-09 |
Family
ID=82078498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210363515.2A Active CN114675524B (en) | 2022-04-08 | 2022-04-08 | Miniature CPT atomic clock physical system device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114675524B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116826521A (en) * | 2023-08-31 | 2023-09-29 | 中国航天三江集团有限公司 | Reflective atomic air chamber and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060022761A1 (en) * | 2004-07-16 | 2006-02-02 | Abeles Joseph H | Chip-scale atomic clock (CSAC) and method for making same |
| US20070076776A1 (en) * | 2005-07-22 | 2007-04-05 | Honeywell International Inc. | Technique for optically pumping alkali-metal atoms using cpt resonances |
| CN101425804A (en) * | 2008-10-28 | 2009-05-06 | 北京大学 | Coherent arrangement imprisoned atomic clock |
| US20140347140A1 (en) * | 2012-02-15 | 2014-11-27 | Wuhan Institute Of Physics And Mathematics, Chinese Academy Of Sciences | Physical system for chip-scale cpt atomic clock |
| US20150222285A1 (en) * | 2012-08-30 | 2015-08-06 | Ricoh Company, Ltd. | Atomic oscillator and interrogation method of coherent population trapping resonance |
| CN109491231A (en) * | 2019-01-19 | 2019-03-19 | 蚌埠学院 | A kind of left-right rotary circularly polarized light CPT atomic clock physical system device |
-
2022
- 2022-04-08 CN CN202210363515.2A patent/CN114675524B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060022761A1 (en) * | 2004-07-16 | 2006-02-02 | Abeles Joseph H | Chip-scale atomic clock (CSAC) and method for making same |
| US20070076776A1 (en) * | 2005-07-22 | 2007-04-05 | Honeywell International Inc. | Technique for optically pumping alkali-metal atoms using cpt resonances |
| CN101425804A (en) * | 2008-10-28 | 2009-05-06 | 北京大学 | Coherent arrangement imprisoned atomic clock |
| US20140347140A1 (en) * | 2012-02-15 | 2014-11-27 | Wuhan Institute Of Physics And Mathematics, Chinese Academy Of Sciences | Physical system for chip-scale cpt atomic clock |
| US20150222285A1 (en) * | 2012-08-30 | 2015-08-06 | Ricoh Company, Ltd. | Atomic oscillator and interrogation method of coherent population trapping resonance |
| CN109491231A (en) * | 2019-01-19 | 2019-03-19 | 蚌埠学院 | A kind of left-right rotary circularly polarized light CPT atomic clock physical system device |
Non-Patent Citations (1)
| Title |
|---|
| 王鑫;范琦;杜志静;郭文阁;常宏;张首刚;: "激光参量对CPT铷原子钟稳定度影响的数值分析", 时间频率学报, no. 02 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116826521A (en) * | 2023-08-31 | 2023-09-29 | 中国航天三江集团有限公司 | Reflective atomic air chamber and preparation method thereof |
| CN116826521B (en) * | 2023-08-31 | 2023-11-28 | 中国航天三江集团有限公司 | Reflective atomic air chamber and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114675524B (en) | 2024-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101690467B1 (en) | Optical module and atomic oscillator | |
| US7701302B2 (en) | Atomic frequency acquiring apparatus and atomic clock | |
| CN102799101B (en) | Physical system device for chip coherent population trapping (CPT) atomic clock | |
| US7911611B2 (en) | Optical system of atomic oscillator and atomic oscillator | |
| CN102778839B (en) | Physical system device of passive type CPT (Coherent Population Trapping) atomic clock | |
| EP3223540B1 (en) | Optical microphone system | |
| CN109491231A (en) | A kind of left-right rotary circularly polarized light CPT atomic clock physical system device | |
| CN110336182A (en) | Dark cavity laser | |
| JPH07120835B2 (en) | Optical integrated circuit | |
| CN114675524B (en) | Miniature CPT atomic clock physical system device | |
| JP2006173567A (en) | Surface-emitting laser device provided with optical sensor and optical waveguide device using the same | |
| CN110535005B (en) | Light and small photoelectric oscillator based on electromagnetic induction transparency principle and low-phase-noise microwave signal generation method | |
| CN110196549A (en) | A kind of device for realizing orthogonal circular polarizations light CPT atomic clock physical system | |
| US20150116046A1 (en) | Optical module and atomic oscillator | |
| JP3963998B2 (en) | Atomic oscillator | |
| JP2017139280A (en) | Quantum interference device, atomic oscillator, electronic apparatus and mobile | |
| CN114899702A (en) | Laser device offset frequency stabilizing device and method based on optical fiber ring resonator | |
| CN109038196B (en) | A kind of device directly generating narrow linewidth vortex laser | |
| CN102736510A (en) | Wristwatch with atomic oscillator | |
| CN114448517A (en) | Microwave communication device and method | |
| EP3564759A1 (en) | Physical module of chip-scale atomic clock | |
| JP2009194418A (en) | Atomic oscillator | |
| JP6136110B2 (en) | Quantum interference device, atomic oscillator and electronic equipment | |
| CN115986543A (en) | Narrow linewidth laser | |
| CN209980031U (en) | Device for realizing orthogonal circularly polarized light CPT atomic clock physical system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |