CN106200354A - A kind of optical-fiber type CPT atomic clock physical system - Google Patents
A kind of optical-fiber type CPT atomic clock physical system Download PDFInfo
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- CN106200354A CN106200354A CN201610633456.0A CN201610633456A CN106200354A CN 106200354 A CN106200354 A CN 106200354A CN 201610633456 A CN201610633456 A CN 201610633456A CN 106200354 A CN106200354 A CN 106200354A
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- optical fiber
- air chamber
- atomic air
- atomic
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- 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
Abstract
The present invention provides a kind of optical-fiber type CPT atomic clock physical system, this system includes: tail optical fiber VCSEL laser instrument, fibre optic attenuator, optical fiber quarter wave plate, atomic air chamber assembly and tail optical fiber photodetector, wherein, described fibre optic attenuator is connected with described tail optical fiber VCSEL laser instrument by optical fiber；Described optical fiber quarter wave plate is connected with described fibre optic attenuator by optical fiber；Described atomic air chamber assembly is connected with described optical fiber quarter wave plate by optical fiber；Described tail optical fiber photodetector is connected with described atomic air chamber assembly by optical fiber；Described atomic air chamber assembly includes atomic air chamber, C field coil, Metal constant temperature groove and magnetic cup shield tape.The present invention compared in prior art without being co-axially mounted, reduce installation and the difficulty of debugging light path and installation volume is little, and the atomic air chamber in the present invention can realize light and interact with alkali metal atom in optical fiber during optical fiber multiple total reflection, improve signal to noise ratio, thus improve the stability of output CPT optical signal.
Description
Technical field
The present invention relates to microminiature Technology of Atomic Frequency Standards field, particularly relate to a kind of full fiber type CPT atomic clock department of physics
System.
Background technology
Optical fiber is fibre-optic abbreviation, is a kind of fiber being made up of glass or plastics, can conduct instrument as light.
Transmission principle is the total reflection of light.First being proposed optical fiber by front Hong Kong Chinese University principal Gao Kunhe George A.Hockham can
For the imagination of communication transfer, therefore high Kun obtains Nobel Prize in physics in 2009.
Optical fiber technology is typically made up of three parts: optical signal transmitting terminal, connects for the optical fiber and optical signal transmitting optical signal
Receiving end.Optical fiber technology has embodied in this three part.Optical fiber sensing technology is a new technique, utilizes and transmits optical signal
Optical fiber perception environmental change (including environmental change and the change of optical fiber external environment in optical fiber), be embodied in the change of optical signal by light
Signal receiving end receives, and is finally restored the change information of environment by the change of electronic equipment process signal.Due to optical fiber
The advantages such as sensing has light structure, and design is simple, its application is more and more extensive.
Atomic clock i.e. atomic time frequency standard (Atomic Frequency Standard), after within 1948, coming out, half
The research of atomic clock of individual many century has had significant progress.Conventional atom clock forms industry entry commercial field already and produces,
And be widely used.Greatly to satellite communication and satellite navigation, such as GPS, Beidou navigation etc. is little to microwave base station towers, radio
The nucleus equipments such as broadcasting station are just provided with atomic clock.There is no atomic clock, long distance positioning to tens meters, several meters or even several lis
Meter Gen Ben cannot imagine.
During the atomic interaction of two coherent lasers and Λ energy level, when frequency difference and the ground state two energy level frequency difference phase of bi-coloured light
With, i.e. during resonance Raman, atom is prepared into coherent superposition state, referred to as CPT state.The atom being in CPT state decouples with light field, no
Again with light field interactions.1976, Alzetta et al. was using two frequency laser to act in the experiment of Na atomic group, first
Secondary it is found that CPT phenomenon.Nineteen eighty-two, first CPT phenomenon is applied to atomic clock by Thomas et al., changes conventional atom clock technology
In " state selection " and " state excites " technology, and the two is united two into one, not in use by microwave cavity, so that atomic clock
Volume and power consumption be greatly reduced, and greatly reduce optical frequency shift.In view of being prone to miniaturization and high performance feature, passive-type
CPT atomic clock was paid attention to by various countries after 1998.
Passive-type CPT (coherent population trapping, Coherent Population Trapping) atomic clock, because relatively passing
System rubidium atomic clock eliminates microwave cavity, so its volume is little, lightweight and low in energy consumption, is highly suitable to be applied for various portable
In formula electronic equipment.
At present, the passive-type CPT atomic clock physical system overwhelming majority uses the optics of free space, such as collimation thoroughly
Mirror, light intensity decays sheet, quarter wave plate, therefore the volume of overall physical system is limited to Traditional optics volume.Additionally, it is former
The heater of edema of the legs during pregnancy room generally uses the bifilar parallel heater strip being wound in atomic air chamber or the MOS being placed in atomic air chamber side
Pipe.The CPT atomic clock physical system of this structure has following several shortcoming:
1. having the angle of divergence due to the emergent light spot of free space VCSEL laser instrument, collimating lens is used for having to be sent out
The line polarized light dissipating angle is changed into parallel lines polarized light, therefore it is required that the exit portal center of VCSEL laser tube, Jiao of collimating lens
Point, quarter wave plate center, atomic air chamber axis and photodetector center must be coaxial.This requirement increases installation
With the difficulty of debugging light path, affect the frequency stability of atomic clock.
2. in the case of atomic air chamber temperature is certain, in the light interaction with alkali metal atom, for improving CPT letter
Number signal to noise ratio, need to increase the length of light and atomic interaction, due to the just directional light after collimation, signal to noise ratio to be improved
The length of atomic air chamber can only be increased, so that the volume of atomic clock and power consumption increase.
3. the heater of atomic air chamber generally uses and is wound in the bifilar parallel heater strip of atomic air chamber or is placed in atom gas
The metal-oxide-semiconductor of side, room, easily produces electromagnetostatic field, direct interference atomic air chamber internal magnetic field during heating, affect atomic clock output
The stability of CPT signal.
4. atomic air chamber is owing to being to use traditional glass blown technique to make, and inevitable is injecting alkali metal and buffer gas
Forming a little glass pointed cone at seal, the dissymmetrical structure of this atomic air chamber can affect the compact of CPT atomic clock
Property and stability.
Summary of the invention
Present invention solves the technical problem that and be: overcome the deficiencies in the prior art, it is provided that a kind of optical-fiber type CPT atomic clock physics
System, reduces and installs and the difficulty of debugging light path, improve the stability of output CPT signal, reduce volume, reduce merit
Consumption.
The technical solution of the present invention:
A kind of optical-fiber type CPT atomic clock physical system, including: tail optical fiber VCSEL laser instrument, fibre optic attenuator, optical fiber 1/4 ripple
Sheet, atomic air chamber assembly and tail optical fiber photodetector；Wherein, described tail optical fiber VCSEL laser instrument, described fibre optic attenuator, described
Optical fiber quarter wave plate, described atomic air chamber assembly pass sequentially through optical fiber with described tail optical fiber photodetector and are connected；Described atom gas
Chamber component includes atomic air chamber, C field coil, Metal constant temperature groove and magnetic cup shield tape, and wherein, described atomic air chamber will be for injecting alkali gold
The optical fiber of the hollow belonging to atom and buffer gas draws cone technology to be sealed to form by optical fiber；Described atomic air chamber and described optical fiber 1/
4 wave plates are connected；Described C field coil is along the outer wall being axially set around described atomic air chamber of described atomic air chamber, in institute
State atomic air chamber and produce the uniform magnetic field being parallel to the circularly polarized light direction of propagation；Described atomic air chamber is embedded at described Metal constant temperature
Groove, described Metal constant temperature groove is for controlling the temperature of described atomic air chamber；Described Metal constant temperature groove is located at by described magnetic cup shield tape bag；
Described tail optical fiber VCSEL laser instrument is used for producing line polarized light, and described line polarized light is decayed after described fibre optic attenuator, decay
Line polarized light is converted to circularly polarized light through described optical fiber quarter wave plate, and under conditions of buffer gas and uniform magnetic field, described circle is inclined
The light that shakes occurs to interact with alkali metal atom in described atomic air chamber and produces CPT optical signal, described tail optical fiber photodetector
For receiving described CPT optical signal, and described CPT optical signal is converted to the CPT signal of telecommunication.
Further, in above-mentioned optical-fiber type CPT atomic clock physical system, described Metal constant temperature groove includes heating plate, temperature
Sensor and metallic channel；Wherein, described heating plate is arranged at the bottom of described metallic channel, is used for heating described metallic channel；Described
Temperature sensor is arranged at the sidewall of described metallic channel, for the temperature of the described metallic channel of detection in real time；Described metallic channel is used for
It is embedded described atomic air chamber and heats described atomic air chamber.
Further, in above-mentioned optical-fiber type CPT atomic clock physical system, described heating plate includes METAL HEATING PROCESS silk and thin film
Insulating trip；Wherein, one of them end of described METAL HEATING PROCESS silk is provided with the first lead-in wire, and another end is provided with second and draws
Line；The plating of described METAL HEATING PROCESS silk is located at described film-insulated.
Further, in above-mentioned optical-fiber type CPT atomic clock physical system, the quantity of described heating plate is two, in heating
In two faces of sheet be coated with METAL HEATING PROCESS silk face as front, wherein, what the reverse side of two heating plates was corresponding is fitted in one
Rise；First lead-in wire of two heating plates is connected to each other, and the second lead-in wire is connected to each other.
Further, in above-mentioned optical-fiber type CPT atomic clock physical system, the quantity of described heating plate is two, in heating
In two faces of sheet be coated with METAL HEATING PROCESS silk face as front, wherein, what the reverse side of two heating plates was corresponding is fitted in one
Rise；First lead-in wire of one of them heating plate goes between with the second of another heating plate and is connected, or described one of them add
Second lead-in wire of backing is connected with the first lead-in wire of another heating plate described.
Further, in above-mentioned optical-fiber type CPT atomic clock physical system, the side that described METAL HEATING PROCESS silk arranges with " returning " type
Formula is arranged.
Further, in above-mentioned optical-fiber type CPT atomic clock physical system, it is exhausted that described thin film is located in the plating of described METAL HEATING PROCESS silk
Embolium.
The present invention compared with prior art has the advantages that
1) present invention is by tail optical fiber VCSEL laser instrument, fibre optic attenuator, optical fiber quarter wave plate, atomic air chamber assembly and tail optical fiber light
Electric explorer is connected by optical fiber, compared in prior art without being co-axially mounted, reduce install and debugging light path difficulty
Degree, and installation volume is little, it is easy to and miniaturization and through engineering approaches produce.
2) to realize light former with alkali metal in optical fiber during optical fiber multiple total reflection for the atomic air chamber in the present invention
Son interacts, and therefore compared to the atomic air chamber of prior art, can obtain longer the interaction distance under equal length,
Improve signal to noise ratio, thus improve the stability of output CPT optical signal.
3) structural symmetry of Atom air chamber of the present invention is good, it is possible to uniform winding C field coil such that it is able to produce all
Even magnetic field, and improve the stability of output CPT optical signal.
Accompanying drawing explanation
Fig. 1 shows the structural representation of the optical-fiber type CPT atomic clock physical system that embodiments of the invention provide；
Fig. 2 shows the Metal constant temperature groove structure chart that embodiments of the invention provide；
Fig. 3 shows the heating plate structural representation that embodiments of the invention provide.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the invention are described in further detail:
Fig. 1 shows the structural representation of the optical-fiber type CPT atomic clock physical system that embodiments of the invention provide.Such as figure
Shown in 1, the invention provides a kind of optical-fiber type CPT atomic clock physical system, this system includes: tail optical fiber VCSEL laser tube 1, light
Fine attenuator 2, optical fiber quarter wave plate 3, atomic air chamber assembly and tail optical fiber photodetector 8.Wherein,
Tail optical fiber VCSEL laser instrument 1 is used for producing line polarized light.
Fibre optic attenuator 2 is connected with tail optical fiber VCSEL laser instrument 1 by optical fiber, is used for line polarized light of decaying.
Optical fiber quarter wave plate 3 is connected with fibre optic attenuator 2 by optical fiber, for line polarized light is converted to circularly polarized light.
When being embodied as, the quick shaft direction of spin fiber quarter wave plate 3, make the polarization direction of line polarized light and the fast of optical fiber quarter wave plate 3
Angle between direction of principal axis is 45., thus obtain circularly polarized light.
Atomic air chamber assembly is connected with optical fiber quarter wave plate 3 by optical fiber, is used for placing alkali metal atom and cushion gas
Body, and make alkali metal atom produce CPT optical signal with the interaction of circularly polarized light generation light with atom.It is understood that
It is that buffer gas selects the gas that those skilled in the art commonly use, such as nitrogen, at uniform magnetic field and the environment of buffer gas
Under, it is possible to effectively make the interaction of metallic atom and circularly polarized light generation light with atom.
Tail optical fiber photodetector 8 is connected with atomic air chamber assembly by optical fiber, is used for receiving CPT optical signal, and by CPT
Optical signal is converted to the CPT signal of telecommunication.
Atomic air chamber assembly includes atomic air chamber 4, C field coil 5, Metal constant temperature groove 6 and magnetic cup shield tape 7, wherein, atom gas
Room 4 is that the optical fiber of the hollow by injecting alkali metal atom and buffer gas draws cone technology to be sealed to form by optical fiber；Atomic air chamber 4
It is connected with optical fiber quarter wave plate 3；C field coil 5 is along the outer wall being axially set around atomic air chamber 4 of atomic air chamber 4, for former
Edema of the legs during pregnancy room 4 produces the uniform magnetic field being parallel to the circularly polarized light direction of propagation；Atomic air chamber 4 is embedded at Metal constant temperature groove 6, and metal is permanent
Temperature groove 6 is for controlling the temperature of atomic air chamber 4；Metal constant temperature groove 6 is located at by magnetic cup shield tape 7 bag, is used for preventing external magnetic field to former
The interference in the magnetic field in edema of the legs during pregnancy room 4.
Specifically, atomic air chamber 4 is to use optical fiber to draw cone technology that the optical fiber of hollow is elongated and sealed, so that atom
Air chamber 4 obtains structural symmetry, it is possible to uniform winding C field coil 5 such that it is able to produces uniform magnetic field, and improves output CPT
The stability of optical signal.
Line polarized light launched by tail optical fiber VCSEL laser instrument 1, and line polarized light is by fiber-optic transfer to fibre optic attenuator 2, and optical fiber declines
Subtracting device 2 intensity of line polarized light to be decayed, the line polarized light after decay is converted to circular polarization after optical fiber quarter wave plate 3
Light, circularly polarized light enters atomic air chamber 4, and atomic air chamber 4 is heated by Metal constant temperature groove 6, so that in atomic air chamber 4
Alkali metal atom number increases, and in the environment of buffer gas and C field coil 5 produce uniform magnetic field, circularly polarized light is former with alkali metal
Son interacts, and produces CPT optical signal, and CPT optical signal transmission to tail optical fiber photodetector 8, tail optical fiber photodetector 8 connects
Receive CPT optical signal, and CPT optical signal is converted to the CPT signal of telecommunication.It should be noted that light in atomic air chamber 4 with total reflection
Mode be transmitted so that circularly polarized light and alkali metal atom occur the distance interacted elongated, improve noise
Ratio, thus improve the stability of output CPT optical signal.
The present invention is by tail optical fiber VCSEL laser instrument, fibre optic attenuator, optical fiber quarter wave plate, atomic air chamber assembly and tail optical fiber photoelectricity
Detector is connected by optical fiber, compared in prior art without being co-axially mounted, reduce install and debugging light path difficulty,
And installation volume is little, it is easy to miniaturization and through engineering approaches produce.And it is many at optical fiber that the atomic air chamber in the present invention can realize light
Interact, therefore compared to the atomic air chamber of prior art, in phase with alkali metal atom in optical fiber during secondary total reflection
With longer the interaction distance can be obtained under length, improve signal to noise ratio, thus improve the stability of output CPT optical signal.
Further, the atomic air chamber structural symmetry in the present invention is good, can be wound around C field coil uniformly such that it is able to produce all
Even magnetic field, it is possible to increase the stability of output CPT optical signal.
Fig. 2 shows the structure chart of the Metal constant temperature groove that the embodiment of the present invention provides.As in figure 2 it is shown, Metal constant temperature groove 6 wraps
Include heating plate 60, temperature sensor 61 and metallic channel 62.Wherein,
Heating plate 60 is arranged at the bottom of metallic channel 62, is used for heating metallic channel 62.When being embodied as, heating plate 60 is permissible
Gluing is in the bottom of metallic channel 62.It is to be appreciated that heating plate 60 has multiple with the connected mode of the bottom of metallic channel 62, this
Embodiment is not limited.
Temperature sensor 61 is arranged at the sidewall of metallic channel 62, for the temperature of detection metallic channel 62 in real time.
Metallic channel 62 is used for being embedded atomic air chamber 4 and heating described atomic air chamber 4.
During work, atomic air chamber 4 is heated by heating plate 60 by metallic channel 62, and temperature sensor 61 can be examined in real time
Survey the temperature of metallic channel 62 such that it is able to detect the temperature of atomic air chamber 4 in real time.
Fig. 3 shows the heating plate structural representation that the embodiment of the present invention provides.As it is shown on figure 3, heating plate 60 includes gold
Belonging to heater strip 603 and film-insulated 602, when being embodied as, the material of METAL HEATING PROCESS silk 603 is not limited at the present embodiment
Fixed.The material of film-insulated 602 can be plastics, it is to be understood that the constituent material of film-insulated can have multiple,
The present embodiment is not limited.Wherein,
METAL HEATING PROCESS silk 603 has two ends, and one of them end of METAL HEATING PROCESS silk 603 is provided with the first lead-in wire
6011, another end is provided with the second lead-in wire 6012.It is to be appreciated that the first lead-in wire 6011 and the second lead-in wire 6012 are respectively
It is connected with external circuit, produces heat by METAL HEATING PROCESS silk 603 is energized.
METAL HEATING PROCESS silk 603 is arranged at film-insulated 602.When being embodied as, it is exhausted that thin film is located in METAL HEATING PROCESS silk 603 plating
The one side of embolium 602.METAL HEATING PROCESS silk 603 is arranged at film-insulated 602 in the way of the arrangement of " returning " type, so that metal
The length of heater strip 603 increases, and adds the resistance of METAL HEATING PROCESS silk 603 such that it is able to well uniformly produce heat.
In above-described embodiment, the quantity of heating plate 60 is two, to be coated with METAL HEATING PROCESS silk in two faces of heating 60
Face be front, wherein, corresponding the fitting together of reverse side of two heating plates 60；First lead-in wire of two heating plates 60
6011 are connected to each other, and the second lead-in wire 6012 is connected to each other.Owing to the METAL HEATING PROCESS silk 603 of two heating plates 60 is the most flat
OK such that it is able to effectively offset the magnetic field that the METAL HEATING PROCESS silk of energising produces, such that it is able to prevent from disturbing the magnetic of atomic air chamber 4
?.
In above-described embodiment, the quantity of heating plate 60 is two, to be coated with METAL HEATING PROCESS in two faces of heating plate 60
The face of silk 603 is front, wherein, and corresponding the fitting together of reverse side of two heating plates 60, so that two heating plates
The METAL HEATING PROCESS silk 603 of 60 is parallel to each other；First lead-in wire 6011 and the of another heating plate 60 of one of them heating plate 60
Two lead-in wires 6012 are connected, or the second lead-in wire 6012 of this one of them heating plate 60 draws with the first of another heating plate 60
Line 6011 is connected.Owing to the METAL HEATING PROCESS silk 603 of two heating plates 60 is parallel to each other such that it is able to effectively offset the gold of energising
Belong to the magnetic field that heater strip produces, such that it is able to prevent from disturbing the magnetic field of atomic air chamber 4.
The present invention is by tail optical fiber VCSEL laser instrument, fibre optic attenuator, optical fiber quarter wave plate, atomic air chamber assembly and tail optical fiber photoelectricity
Detector is connected by optical fiber, compared in prior art without being co-axially mounted, reduce install and debugging light path difficulty,
And installation volume is little, it is easy to miniaturization and through engineering approaches produce, and the atomic air chamber in the present invention to realize light many at optical fiber
Interact, therefore compared to the atomic air chamber of prior art, in phase with alkali metal atom in optical fiber during secondary total reflection
With longer the interaction distance can be obtained under length, improve signal to noise ratio, thus improve the stability of output CPT optical signal.
Further, the atomic air chamber structural symmetry in the present invention is good, can be wound around C field coil uniformly such that it is able to produce all
Even magnetic field, it is possible to increase the stability of output CPT optical signal.
Embodiment described above is the present invention more preferably detailed description of the invention, and those skilled in the art is at this
The usual variations and alternatives carried out in the range of bright technical scheme all should comprise within the scope of the present invention.
Claims (7)
1. an optical-fiber type CPT atomic clock physical system, it is characterised in that including: tail optical fiber VCSEL laser instrument (1), optical fiber attenuation
Device (2), optical fiber quarter wave plate (3), atomic air chamber assembly and tail optical fiber photodetector (8)；Wherein,
Described tail optical fiber VCSEL laser instrument (1), described fibre optic attenuator (2), described optical fiber quarter wave plate (3), described atomic air chamber
Assembly passes sequentially through optical fiber with described tail optical fiber photodetector (8) and is connected；
Described atomic air chamber assembly includes atomic air chamber (4), C field coil (5), Metal constant temperature groove (6) and magnetic cup shield tape (7), its
In, described atomic air chamber (4) is that the optical fiber of the hollow by injecting alkali metal atom and buffer gas draws cone technology close by optical fiber
Envelope forms；Described atomic air chamber (4) is connected with described optical fiber quarter wave plate (3)；Described C field coil (5) is along described atomic air chamber
(4) the outer wall being axially set around described atomic air chamber (4), is parallel to circularly polarized light for producing at described atomic air chamber (4)
The uniform magnetic field of the direction of propagation；Described atomic air chamber (4) is embedded at described Metal constant temperature groove (6), and described Metal constant temperature groove (6) is used
In the temperature controlling described atomic air chamber (4)；Described Metal constant temperature groove (6) is located at by described magnetic cup shield tape (7) bag；
Described tail optical fiber VCSEL laser instrument (1) is used for producing line polarized light, and described line polarized light is after described fibre optic attenuator (2)
Decay, the line polarized light of decay is converted to circularly polarized light through described optical fiber quarter wave plate (3), at buffer gas and uniform magnetic field
Under the conditions of described circularly polarized light in described atomic air chamber (4) with alkali metal atom occur interact produce CPT optical signal, institute
State tail optical fiber photodetector (8) and be used for receiving described CPT optical signal, and described CPT optical signal is converted to the CPT signal of telecommunication.
Optical-fiber type CPT atomic clock physical system the most according to claim 1, it is characterised in that: described Metal constant temperature groove (6)
Including heating plate (60), temperature sensor (61) and metallic channel (62)；Wherein,
Described heating plate (60) is arranged at the bottom of described metallic channel (62), is used for heating described metallic channel (62)；
Described temperature sensor (61) is arranged at the sidewall of described metallic channel (62), detects described metallic channel (62) in real time
Temperature；
Described metallic channel (62) is used for being embedded described atomic air chamber (4) and heating described atomic air chamber (4).
Optical-fiber type CPT atomic clock physical system the most according to claim 2, it is characterised in that: described heating plate (60) wraps
Include METAL HEATING PROCESS silk (603) and film-insulated (602)；Wherein,
One of them end of described METAL HEATING PROCESS silk (603) is provided with the first lead-in wire (6011), and another end is provided with
Two lead-in wires (6012)；
Described METAL HEATING PROCESS silk (603) is arranged at described film-insulated (602).
Optical-fiber type CPT atomic clock physical system the most according to claim 3, it is characterised in that: described heating plate (60)
Quantity is two, in two faces of heating plate (60) be coated with METAL HEATING PROCESS silk face as front, wherein,
Corresponding the fitting together of reverse side of two heating plates (60)；
First lead-in wire (6011) of two heating plates (60) is connected to each other, and the second lead-in wire (6012) is connected to each other.
Optical-fiber type CPT atomic clock physical system the most according to claim 3, it is characterised in that: described heating plate (60)
Quantity is two, in two faces of heating plate (60) be coated with METAL HEATING PROCESS silk face as front, wherein,
Corresponding the fitting together of reverse side of two heating plates (60)；
First lead-in wire (6011) of one of them heating plate (60) is connected with second lead-in wire (6012) of another heating plate (60)
Connect, or second lead-in wire (6012) of one of them heating plate described (60) goes between with the first of described another heating plate (60)
(6011) it is connected.
6. according to the optical-fiber type CPT atomic clock physical system described in any one of claim 3-6, it is characterised in that: described metal
Heater strip (603) is arranged in the way of the arrangement of " returning " type.
Optical-fiber type CPT atomic clock physical system the most according to claim 3, it is characterised in that: described METAL HEATING PROCESS silk
(603) described film-insulated (602) are located in plating.
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| CN106932738A (en) * | 2017-03-14 | 2017-07-07 | 北京航天控制仪器研究所 | A kind of optical-fiber type CPT atom magnetometer physical systems |
| CN107014555A (en) * | 2017-03-15 | 2017-08-04 | 兰州空间技术物理研究所 | A kind of measurement apparatus of atomic air chamber internal damping gas pressure intensity |
| CN107068525A (en) * | 2017-05-08 | 2017-08-18 | 中国科学院武汉物理与数学研究所 | A kind of device for being used under vacuum environment produce Atomic Vapor |
| CN111044954A (en) * | 2019-12-19 | 2020-04-21 | 北京航天控制仪器研究所 | Multimodal closed-loop non-directional blind area CPT magnetic measurement method |
| CN112230038A (en) * | 2020-09-04 | 2021-01-15 | 国网浙江省电力有限公司丽水供电公司 | Novel all-optical current sensor and current measuring method |
| CN114280911A (en) * | 2020-09-27 | 2022-04-05 | 北京华信泰科技股份有限公司 | CPT atomic clock physical system |
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