CN106802373A - A kind of atomic sensor system and electric field intensity measuremenrt method for measuring electric-field intensity - Google Patents
A kind of atomic sensor system and electric field intensity measuremenrt method for measuring electric-field intensity Download PDFInfo
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- CN106802373A CN106802373A CN201611096359.9A CN201611096359A CN106802373A CN 106802373 A CN106802373 A CN 106802373A CN 201611096359 A CN201611096359 A CN 201611096359A CN 106802373 A CN106802373 A CN 106802373A
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- 230000005684 electric field Effects 0.000 title claims abstract description 63
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- 230000008878 coupling Effects 0.000 claims description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0878—Sensors; antennas; probes; detectors
- G01R29/0885—Sensors; antennas; probes; detectors using optical probes, e.g. electro-optical, luminescent, glow discharge, or optical interferometers
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Abstract
The present invention relates to a kind of atomic sensor system for measuring electric-field intensity and the method for measurement electric-field intensity, mainly include the following steps that：Red exploring laser light and blue coupled laser are extended through laser filter into laser beam expander and to its beam shape；Red exploring laser light after extension is irradiated excitation to atom into atom vapor chamber, and the atom under the blue coupled laser after extension is encouraged into atom vapor chamber to red exploring laser light is irradiated；Spectral detector is measured to the red exploring laser light signal intensity through atom vapor chamber, and the frequency sweep according to red exploring laser light obtains its transmitted spectrum；Lock-in amplifier is amplified to the transmitted spectrum electric signal that spectral detector is exported, and exports to terminal, the transmitted light spectrogram of the red exploring laser light of terminal display, and calculates electric-field intensity by transmitted light spectrogram.The present invention is proposed to increase laser filter and expands link so that the atomic sensor system sensitivity of measurement electric-field intensity is higher.
Description
Technical field
The present invention relates to electric field intensity measuremenrt field, more particularly to a kind of atomic sensor system for measuring electric-field intensity and
The method for measuring electric-field intensity.
Background technology
The atomic sensor system core of existing measurement electric-field intensity is red exploring laser light and blueness in atom vapor chamber
The atom of coupled laser intersection, the atom at the coincidence position is subject to the excitation of red exploring laser light and blue coupled laser right
Electric field radiation is sensitive, can be used in the measurement of electric-field intensity；And the atom vapor of other parts is not due to having in atom vapor chamber
Encouraged by red exploring laser light and blue coupled laser, thus it is insensitive to electric field radiation, it is not involved in electric field intensity measuremenrt.
Because exploring laser light is that feux rouges, coupled laser are blue lights, and the beam diameter of general blue light is less than feux rouges, therefore red
The diameter of optical detection laser and blue light coupled laser intersection is the diameter of blue light coupled laser, feux rouges exploring laser light and blue light
The misaligned part of coupled laser is not engaged in electromagnetic induced transparency, under causing the electromagnetic induction transmission peak value of red exploring laser light
Drop so that the electromagnetic induction transmission peak value of red exploring laser light is directed through the transmission spectrum after atom vapor with red exploring laser light
Ratio decline, i.e., signal to noise ratio decline, cause the sensitivity of existing electric field atomic sensor system to decline.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of atomic sensor system for measuring electric-field intensity and measurement
The method of electric-field intensity, can be used for the measurement of pole weak electric field.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of atomic sensor system for measuring electric-field intensity
System, including：Detecting laser, coupled laser, laser filter, laser beam expander, atom vapor chamber, spectral detector,
Lock-in amplifier and terminal；
The detecting laser, for output red exploring laser light, the coupled laser swashs for output blue coupling
Light；
The laser filter, for being filtered to the red exploring laser light and blue coupled laser after transmit to institute
State laser beam expander；
The laser beam expander, for swashing to the red exploring laser light after laser filter filtering and blue coupling
The beam shape of light is exported to atom vapor chamber after being extended；
The atom vapor chamber, for being entered to atom by by the red exploring laser light after laser beam expander extension
Row irradiation excitation, meanwhile, under the blue coupled laser after laser beam expander extension is encouraged to red exploring laser light
Atom be irradiated, formed electromagnetic induced transparency phenomenon, making the transmissivity of red exploring laser light increases；
The spectral detector, for being measured to the red exploring laser light signal intensity through atom vapor chamber, and
Frequency sweep according to red exploring laser light obtains the transmitted spectrum of red exploring laser light；
The transmitted spectrum electric signal that the lock-in amplifier exports spectral detector is amplified, and exports to the end
End, the transmitted light spectrogram of the red exploring laser light of terminal display, and calculated according to the transmitted light spectrogram, obtain electric field
Intensity.
The beneficial effects of the invention are as follows：Red exploring laser light and blueness are improve by tunable, laser of narrowband wave filter
The frequency stability of coupled laser, has been effectively compressed the spectrum width of red exploring laser light transmission peaks, between improve peak value division
Every resolution ratio, and the smaller electric field strength of smaller frequency interval correspondence amplitude visits so as to improve atomic sensor system
Survey the sensitivity of electric-field intensity；By laser beam expander, the utilization ratio of red exploring laser light is improve, increased red spy
The signal to noise ratio that laser electromagnetic induction transmits peak-to-peak signal is surveyed, so as to improve the sensitive of atomic sensor system detection electric-field intensity
Degree.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the detecting laser and coupled laser are tunable laser, the ripple of the red exploring laser light
Scope long is：750nm~810nm, centre wavelength is：780nm, frequency sweeping ranges are：- 40MHz~+40MHz；The blueness
The wave-length coverage of coupled laser is：478nm~488nm, centre wavelength is：483nm.
Further, the laser filter is tunable, laser of narrowband wave filter, for by red exploring laser light and blueness
The line width of coupled laser is adjusted to kHz magnitudes and following, mirror of the laser filter including two reflectivity more than 99.99%
Face, two mirror reflection surfaces are positioned opposite, and the distance between two mirror reflection surfaces pass through piezoelectric ceramics quick regulation.
Further, the laser beam expander is used for the beam shape of red exploring laser light and blue coupled laser simultaneously
Cylinder or rectangle are expanded to, the laser beam expander includes speculum and diaphotoscope.
Beneficial effect using above-mentioned further scheme is：By red exploring laser light and blue coupled laser from linear extension
To face shape, so that atomic sensor system has compared with high directivity gain, atomic sensor system is improve to one party
To the detectivity of electric-field intensity；Red exploring laser light is expanded into the bodily form with blue coupled laser from linear, original is increased
Excited atom number in sub- vapor chamber, improves the sensitivity that atomic sensor system detects electric-field intensity.
Further, the laser beam expander includes cylindrical mirror and convex lens, and the atom vapor chamber is steamed for rectangle atom
Vapour chamber.
Another technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of electric field intensity measuremenrt method, it is special
Levy and be, comprise the following steps：
Step 1：Detecting laser output red exploring laser light, coupled laser output blue coupled laser；
Step 2：Red exploring laser light and blue coupled laser respectively enter laser beam expanding and fill after being filtered through laser filter
Put；
Step 3：Laser beam expander is extended to the beam shape of red exploring laser light and blue coupled laser；
Step 4：Red exploring laser light after extension is irradiated excitation to atom into atom vapor chamber, the indigo plant after extension
Atom under color coupled laser is encouraged into atom vapor chamber to red exploring laser light is irradiated, and forms electromagnetic induced transparency and shows
As making the transmissivity of red exploring laser light increases；
Step 5：Spectral detector is measured to the red exploring laser light signal intensity through atom vapor chamber, and according to
The frequency sweep of red exploring laser light and obtain the transmitted spectrum of red exploring laser light；
Step 6：Lock-in amplifier is amplified to the transmitted spectrum electric signal that spectral detector is exported, and exports to end
End, the transmitted light spectrogram of the red exploring laser light of terminal display, and calculated according to the transmitted light spectrogram, obtain electric-field intensity.
The beneficial effects of the invention are as follows：Red exploring laser light and blueness are improve by tunable, laser of narrowband wave filter
The frequency stability of coupled laser, has been effectively compressed the spectrum width of red exploring laser light transmission peaks, between improve peak value division
Every resolution ratio, and the smaller electric field strength of smaller frequency interval correspondence amplitude visits so as to improve atomic sensor system
Survey the sensitivity of electric-field intensity；By laser beam expander, the utilization ratio of red exploring laser light is improve, increased red spy
The signal to noise ratio that laser electromagnetic induction transmits peak-to-peak signal is surveyed, so as to improve the sensitive of atomic sensor system detection electric-field intensity
Degree.
Further, the detecting laser and coupled laser are tunable laser, the ripple of the red exploring laser light
Scope long is：750nm~810nm, centre wavelength is：780nm, frequency sweeping ranges are：- 40MHz~+40MHz；The blueness
The wave-length coverage of coupled laser is：478nm~488nm, centre wavelength is：483nm.
Further, the laser filter is tunable, laser of narrowband wave filter, for by red exploring laser light and blueness
The line width of coupled laser is adjusted to kHz magnitudes and following, mirror of the laser filter including two reflectivity more than 99.99%
Face, two mirror reflection surfaces are positioned opposite, and the distance between two mirror reflection surfaces pass through piezoelectric ceramics quick regulation.
Further, the laser beam expander is used for the beam shape of red exploring laser light and blue coupled laser simultaneously
Cylinder or rectangle are expanded to, the laser beam expander includes speculum and diaphotoscope.
Beneficial effect using above-mentioned further scheme is：By red exploring laser light and blue coupled laser from linear extension
To face shape, so that atomic sensor system has compared with high directivity gain, atomic sensor system is improve to one party
To the detectivity of electric-field intensity；Red exploring laser light is expanded into the bodily form with blue coupled laser from linear, original is increased
Excited atom number in sub- vapor chamber, improves the sensitivity that atomic sensor system detects electric-field intensity.
Further, the laser beam expander includes cylindrical mirror and convex lens, and the atom vapor chamber is steamed for rectangle atom
Vapour chamber.
Brief description of the drawings
Fig. 1 is the specific attachment structure schematic diagram of atomic sensor system of present invention measurement electric-field intensity；
Fig. 2 is electric field intensity measuremenrt method flow schematic diagram of the present invention；
Fig. 3 is the specific attachment structure schematic diagram of atomic sensor system of present invention measurement pole light current field intensity；
In accompanying drawing, the list of parts representated by each label is as follows：
1st, detecting laser, 2, coupled laser, 3, laser filter, 4, laser beam expander, 5, atom vapor chamber, 6,
Spectral detector, 7, lock-in amplifier, 8, terminal, 9,30kHz square wave sources, 10, optical modulator.
Specific embodiment
Principle of the invention and feature are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
As shown in figure 1, the atomic sensor system of the measurement electric-field intensity described in the specific embodiment of the invention 1, including：
Detecting laser 1, coupled laser 2, laser filter 3, laser beam expander 4, atom vapor chamber 5, spectral detector 6, lock
Phase amplifier 7 and terminal 8；
Detecting laser 1, for output red exploring laser light, coupled laser 2, for output blue coupled laser；
Laser filter 3, for being filtered to red exploring laser light and blue coupled laser after transmit to laser beam expanding
Device 4；
Laser beam expander 4, for the ripple to the red exploring laser light after the filtering of laser filter 3 and blue coupled laser
Harness shape is exported to atom vapor chamber 5 after being extended；
Atom vapor chamber 5, for being irradiated to atom by the red exploring laser light after laser beam expander 4 extends
Excitation, meanwhile, the atom under the blue coupled laser after the extension of laser beam expander 4 is encouraged to red exploring laser light is carried out
Irradiation, forms electromagnetic induced transparency phenomenon, and making the transmissivity of red exploring laser light increases；
Spectral detector 6, for being measured to the red exploring laser light signal intensity through atom vapor chamber 5, and root
The transmitted spectrum of red exploring laser light is obtained according to the frequency sweep of red exploring laser light；
The transmitted spectrum electric signal that lock-in amplifier 7 exports spectral detector 6 is amplified, and exports to terminal 8, whole
The transmitted light spectrogram of the red exploring laser light of the display of end 8, terminal 8 is simultaneously calculated according to transmitted light spectrogram, obtains electric-field intensity.
Detecting laser 1 and coupled laser 2 are tunable laser, and the wave-length coverage of red exploring laser light is：750nm
~810nm, centre wavelength is：780nm, frequency sweeping ranges are：- 40MHz~+40MHz；The wave-length coverage of blue coupled laser
For：478nm~488nm, centre wavelength is：483nm.
Laser filter 3 is tunable, laser of narrowband wave filter, for by red exploring laser light and blue coupled laser
Line width is adjusted to kHz magnitudes and following, minute surface of the laser filter 3 including two reflectivity more than 99.99%, two mirror-reflections
Face is positioned opposite, and the distance between two mirror reflection surfaces are adjusted by piezoelectric ceramics；Tunable, laser of narrowband wave filter improves
The frequency stability of red exploring laser light and blue coupled laser, has been effectively compressed the spectrum width of exploring laser light transmission peaks, carries
The resolution ratio at peak value division interval high, and the smaller electric field strength of smaller frequency interval correspondence amplitude, so as to improve atom
The detectivity of sensing system.
Laser beam expander 4 is used to for the beam shape of red exploring laser light and blue coupled laser to expand to cylinder simultaneously
Shape or rectangle, laser beam expander 4 include speculum and diaphotoscope, and laser beam expander 4 expands device and square including cylinder
Shape expands device.
It is that double-reflecting face type expands device that cylinder expands device, and its primary reflection surface uses the paraboloid of revolution, pair reflection
Face uses a focus of the hyperboloid of revolution, subreflector to be overlapped with the focus of primary reflection surface, and primary reflection surface axle center is opened aperture and permitted
Perhaps incident arrow beam of light is passed through, and arrow beam of light is incided on subreflector, is incided on primary reflection surface after subreflector reflection diffusion,
Thick cylindrical beam is formed after being reflected through primary reflection surface again.
Rectangle expands device by cylindrical mirror and convex lens group into the focus of cylindrical mirror overlaps with the focus of convex lens, incident
, by becoming covering of the fan light beam after cylindrical mirror, the covering of the fan light beam is by becoming rectangular light beam after convex lens for arrow beam of light.
Laser beam expander 4 brings up to the beam diameter of blue coupled laser straight slightly larger than red exploring laser light wave beam
Footpath, the exploring laser light ratio of electromagnetic induced transparency is participated in so as to improve, and increases electromagnetic induction transmission peak value, is improved atom and is passed
The signal to noise ratio of sensor system and sensitivity.
Laser beam expander 4 expands the range of exposures of red exploring laser light and blue coupled laser, can increase participation
The atom number of electric field detecting, the increase of atom number will reduce red exploring laser light transmission spectrum letter during without blue coupled laser
Number, while increasing red exploring laser light transmission peak value signal when having blue coupled laser；When there is external electrical field to radiate, atom
The increase of number will cause that the groove of peak value division is deeper, be conducive to the measurement of frequency interval between two peak values, improve atom
The signal to noise ratio of sensing system and sensitivity.
When pole light current field intensity is measured, preferred atom vapor chamber 5 should be rectangle atom vapor chamber, laser beam expander
4 expand device for rectangle, by cylindrical mirror and convex lens group into.
As shown in figure 1, the atomic sensor system of the measurement electric-field intensity described in the specific embodiment of the invention 1 also includes
30kHz square wave sources 9 and optical modulator 10；30kHz square wave sources 9, optical modulator 10 and lock-in amplifier 7 form optical heterodyne
System, improves signal to noise ratio and atomic sensor system sensitivity.
As shown in Fig. 2 the electric field intensity measuremenrt method described in the specific embodiment of the invention 2, comprises the following steps：
Step 1：The output red exploring laser light of detecting laser 1, the output blue coupled laser of coupled laser 2；
Step 2：Red exploring laser light and blue coupled laser respectively enter laser beam expanding and fill after being filtered through laser filter 3
Put 4；
Step 3：The beam shape of the red exploring laser light of laser beam expander 4 pairs and blue coupled laser is extended；
Step 4：Red exploring laser light after extension is irradiated excitation to atom into atom vapor chamber 5, after extension
Blue coupled laser is irradiated into the atom under the red exploring laser light excitation in 5 pairs, atom vapor chamber, forms electromagnetic induction saturating
Bright phenomenon, making the transmissivity of red exploring laser light increases；
Step 5：6 pairs of red exploring laser light signal intensities through atom vapor chamber 5 of spectral detector are measured, and root
The transmitted spectrum of red exploring laser light is obtained according to the frequency sweep of red exploring laser light；
Step 6：Lock-in amplifier 7 is amplified to the transmitted spectrum electric signal that spectral detector 6 is exported, and exports to end
End 8, terminal 8 shows the transmitted light spectrogram of red exploring laser light, and is calculated according to transmitted light spectrogram, obtains electric-field intensity.
Detecting laser 1 and coupled laser 2 are tunable laser, and the wave-length coverage of the red exploring laser light is
750nm~810nm, centre wavelength is 780nm, and frequency sweeping ranges are ± 40MHz；The wave-length coverage of the blue coupled laser
It is 478nm~488nm, centre wavelength is 483nm.
Laser filter 3 is tunable, laser of narrowband wave filter, for by red exploring laser light and blue coupled laser
Line width is adjusted to kHz magnitudes and following, minute surface of the laser filter 3 including two reflectivity more than 99.99%, two minute surfaces
Reflecting surface is positioned opposite, and the distance between two mirror reflection surfaces are adjusted by piezoelectric ceramics；Tunable, laser of narrowband wave filter is carried
The frequency stability of red exploring laser light and blue coupled laser high, the frequency spectrum for being effectively compressed exploring laser light transmission peaks is wide
Degree, improves the resolution ratio at peak value division interval, and smaller frequency interval corresponds to the smaller electric field strength of amplitude, so as to improve
The detectivity of atomic sensor system.
Laser beam expander 4 is used to for the beam shape of red exploring laser light and blue coupled laser to expand to cylinder simultaneously
Shape or rectangle, laser beam expander 4 include speculum and diaphotoscope, and laser beam expander 4 expands device and square including cylinder
Shape expands device.
It is that double-reflecting face type expands device that cylinder expands device, and its primary reflection surface uses the paraboloid of revolution, pair reflection
Face uses a focus of the hyperboloid of revolution, subreflector to be overlapped with the focus of primary reflection surface, and primary reflection surface axle center is opened aperture and permitted
Perhaps incident arrow beam of light is passed through, and arrow beam of light is incided on subreflector, is incided on primary reflection surface after subreflector reflection diffusion,
Thick cylindrical beam is formed after being reflected through primary reflection surface again.
Rectangle expands device by cylindrical mirror and convex lens group into the focus of cylindrical mirror overlaps with the focus of convex lens, incident
, by becoming covering of the fan light beam after cylindrical mirror, the covering of the fan light beam is by becoming rectangular light beam after convex lens for arrow beam of light.
Laser beam expander 4 brings up to the beam diameter of blue coupled laser straight slightly larger than red exploring laser light wave beam
Footpath, the exploring laser light ratio of electromagnetic induced transparency is participated in so as to improve, and increases electromagnetic induction transmission peak value, is improved atom and is passed
The signal to noise ratio of sensor system and sensitivity.
Laser beam expander 4 expands the range of exposures of red exploring laser light and blue coupled laser, can increase participation
The atom number of electric field detecting, the increase of atom number will reduce red exploring laser light transmission spectrum letter during without blue coupled laser
Number, while increasing red exploring laser light transmission peak value signal when having blue coupled laser；When there is external electrical field to radiate, atom
The increase of number will cause that the groove of peak value division is deeper, be conducive to the measurement of frequency interval between two peak values, improve atom
The signal to noise ratio of sensing system and sensitivity.
When pole light current field intensity is measured, preferred atom vapor chamber 5 should be rectangle atom vapor chamber, laser beam expander
4 expand device for rectangle, by cylindrical mirror and convex lens group into.
In the weak electric field ionization meter to aerial radiation pole as shown in Figure 3, its atomic sensor system attachment structure with
Embodiment 1 is identical, and both identical attachment structure parts, the difference of main introductory section preferred element are repeated no more here.This
In metering system, the preferred rectangular laser light beam using high directivity gain.To adapt to the red exploring laser light and indigo plant of rectangle
Color coupled laser light beam, atom vapor chamber no longer uses existing cylindrical atom vapor chamber, uses rectangle atom vapor chamber instead；Ensure
Red exploring laser light is tried one's best full of whole rectangle atom vapor chamber, and blue coupled laser is completely covered red exploring laser light with maximum
Atom in the utilization rectangle atom vapor chamber of limit.When the pole weak electric field to aerial radiation is measured, should rectangle is former
The normal direction of sub- vapor chamber rectangular surfaces, i.e. high-gain direction are directed at antenna, to improve detectivity.
During electric field measurement, first with the laser of two beam counterpropagates, i.e., blue coupled laser and red are detected
Laser, and blue coupled laser intensity is much larger than red exploring laser light intensity, by the outermost of the basic atom in atom vapor chamber
Layer electron excitation makes its electromagnetism field sensitive to external world to Rydberg upper state, now produces electromagnetic induced transparency phenomenon, is formed red
The transmission peaks of color exploring laser light spectrum；Then, apply the resonance state that tested electromagnetic field changes basic atom, now generate electromagnetism
Sense the division of transmission peak value；Finally, the division amount Ω of red exploring laser light transmission peak value is obtained by spectral detectorRF, and
Using Rabbe's test formula | ERF|=(h/ ξRF)ΩRFThe field intensity of tested electromagnetic field is calculated, in formula, | ERF| to be tested electric field
Intensity, h is planck constant, ξRFIt is atomic dipole moment, ΩRFIt is the frequency interval of exploring laser light spectrum division.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. it is a kind of measure electric-field intensity atomic sensor system, it is characterised in that including：Detecting laser, coupled laser,
Laser filter, laser beam expander, atom vapor chamber, spectral detector, lock-in amplifier and terminal；
The detecting laser, for output red exploring laser light, the coupled laser, for output blue coupled laser；
The laser filter, for being filtered to the red exploring laser light and blue coupled laser after transmit to described and swash
Light expands device；
The laser beam expander, for the red exploring laser light after laser filter filtering and blue coupled laser
Beam shape is exported to atom vapor chamber after being extended；
The atom vapor chamber, for being shone atom by by the red exploring laser light after laser beam expander extension
Excitation is penetrated, meanwhile, the original under the blue coupled laser after laser beam expander extension is encouraged to red exploring laser light
Son is irradiated, and forms electromagnetic induced transparency phenomenon, and making the transmissivity of red exploring laser light increases；
The spectral detector, for being measured to the red exploring laser light signal intensity through atom vapor chamber, and according to
The frequency sweep of red exploring laser light obtains the transmitted spectrum of red exploring laser light；
The transmitted spectrum electric signal that the lock-in amplifier exports spectral detector is amplified, and exports to the terminal,
The transmitted light spectrogram of the red exploring laser light of terminal display, and carried out being calculated electric-field strength according to the transmitted light spectrogram
Degree.
2. it is according to claim 1 it is a kind of measure electric-field intensity atomic sensor system, it is characterised in that the detection
Laser and coupled laser are tunable laser, and the wave-length coverage of the red exploring laser light is：750nm~810nm, in
Cardiac wave is a length of：780nm, frequency sweeping ranges are：- 40MHz~+40MHz；The wave-length coverage of the blue coupled laser is：
478nm~488nm, centre wavelength is：483nm.
3. it is according to claim 1 it is a kind of measure electric-field intensity atomic sensor system, it is characterised in that the laser
Wave filter is tunable, laser of narrowband wave filter, for the line width of red exploring laser light and blue coupled laser to be adjusted into kHz amounts
Level and following, minute surface of the laser filter including two reflectivity more than 99.99%, two mirror reflection surfaces are with respect to cloth
Put, the distance between two mirror reflection surfaces are adjusted by piezoelectric ceramics.
4. it is according to claim 1 it is a kind of measure electric-field intensity atomic sensor system, it is characterised in that the laser
Expand device for by the beam shape of red exploring laser light and blue coupled laser while expand to cylindrical or rectangle, it is described
Laser beam expander includes speculum and diaphotoscope.
5. it is according to claim 4 it is a kind of measure electric-field intensity atomic sensor system, it is characterised in that the laser
Expanding device includes cylindrical mirror and convex lens, and the atom vapor chamber is rectangle atom vapor chamber.
6. a kind of electric field intensity measuremenrt method, it is characterised in that comprise the following steps：
Step 1：Detecting laser output red exploring laser light, coupled laser output blue coupled laser；
Step 2：Red exploring laser light and blue coupled laser respectively enter laser beam expander after being filtered through laser filter；
Step 3：Laser beam expander is extended to the beam shape of red exploring laser light and blue coupled laser；
Step 4：Red exploring laser light after extension is irradiated excitation to atom into atom vapor chamber, the blue coupling after extension
The atom closed under laser is encouraged into atom vapor chamber to red exploring laser light is irradiated, and forms electromagnetic induced transparency phenomenon,
Making the transmissivity of red exploring laser light increases；
Step 5：Spectral detector is measured to the red exploring laser light signal intensity through atom vapor chamber, and according to red
The frequency sweep of exploring laser light obtains the transmitted spectrum of red exploring laser light；
Step 6：Lock-in amplifier is amplified to the transmitted spectrum electric signal that spectral detector is exported, and exports to terminal, whole
The transmitted light spectrogram of the red exploring laser light of end display, and electric-field intensity is calculated according to the transmitted light spectrogram.
7. a kind of electric field intensity measuremenrt method according to claim 6, it is characterised in that detecting laser and coupled laser
Device is tunable laser, and the wave-length coverage of the red exploring laser light is：750nm~810nm, centre wavelength is：780nm,
Frequency sweeping ranges are：- 40MHz~+40MHz；The wave-length coverage of the blue coupled laser is：478nm~488nm, center
Wavelength is：483nm.
8. a kind of electric field intensity measuremenrt method according to claim 6, it is characterised in that the laser filter is adjustable
Humorous, laser of narrowband wave filter, for the line width of red exploring laser light and blue coupled laser to be adjusted into kHz magnitudes and following, institute
Minute surface of the laser filter including two reflectivity more than 99.99% is stated, two mirror reflection surfaces are positioned opposite, two mirror-reflections
The distance between face is adjusted by piezoelectric ceramics.
9. a kind of electric field intensity measuremenrt method according to claim 6, it is characterised in that the laser beam expander is used for
The beam shape of red exploring laser light and blue coupled laser is expanded into cylinder or rectangle, the laser beam expander simultaneously
Including speculum and diaphotoscope.
10. a kind of electric field intensity measuremenrt method according to claim 9, it is characterised in that the laser beam expander bag
Cylindrical mirror and convex lens are included, the atom vapor chamber is rectangle atom vapor chamber.
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| CN201611096359.9A CN106802373B (en) | 2016-12-02 | 2016-12-02 | A kind of atomic sensor system and electric field intensity measuremenrt method measuring electric field strength |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN117157539A (en) * | 2021-04-09 | 2023-12-01 | 英国电讯有限公司 | Electromagnetic field receiver |
| US11940374B2 (en) | 2021-01-21 | 2024-03-26 | Honeywell International Inc. | Continuous tunable RF sensor using rydberg atoms with high transmissivity |
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| US11940374B2 (en) | 2021-01-21 | 2024-03-26 | Honeywell International Inc. | Continuous tunable RF sensor using rydberg atoms with high transmissivity |
| CN117157539A (en) * | 2021-04-09 | 2023-12-01 | 英国电讯有限公司 | Electromagnetic field receiver |
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| CN106802373B (en) | 2019-07-12 |
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