CN104297702B - Measurement method and device of Bell-Bloom self-modulation three-axis magnetic field - Google Patents
Measurement method and device of Bell-Bloom self-modulation three-axis magnetic field Download PDFInfo
- Publication number
- CN104297702B CN104297702B CN201410584391.6A CN201410584391A CN104297702B CN 104297702 B CN104297702 B CN 104297702B CN 201410584391 A CN201410584391 A CN 201410584391A CN 104297702 B CN104297702 B CN 104297702B
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- light
- axis
- bell
- bloom
- 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.)
- Expired - Fee Related
Links
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
The invention relates to a measurement method and device of a Bell-Bloom self-modulation three-axis magnetic field. A conventional Bell-Bloom magnetometer utilizes a single beam to measure a scalar magnetic field, is simple in structure, is high in measurement accuracy and is widely applied to measurement of various scalar magnetic fields. The single-beam Bell-Bloom magnetometer can only measure the scalar magnetic fields, but three-axis magnetic field information is needed in many places in scientific researches and production life, and then a vector magnetometer is needed. Based on the single-beam Bell-Bloom magnetometer, the measurement method and device of the Bell-Bloom self-modulation three-axis magnetic field realize measurement of the three-axis magnetic field by utilizing the self-modulating action on detection light of atomic procession. Compared with the common vector magnetometer, the measurement device of the Bell-Bloom self-modulation three-axis magnetic field is not provided with a radio frequency coil or a magnetic shielding barrel, thereby having a simple light path, being compact in structure and achieving miniaturization and integration easily; the measurement device is low in heating temperature and needs fewer electric elements, so that systematic power consumption is lowered and operation conditions are met more easily; the measurement device utilizes the self-modulating action on detection light of the atomic procession, is lower in noise and is high in detection accuracy.
Description
Technical field
The present invention relates to a kind of method and device of Bell-Bloom automodulations three-axle magnetic field measurement, belongs to atom magnetometer
Technical field.
Background technology
Bell-Bloom is a kind of method of the measurement Scalar Magnetic Field based on optical pumping technology, and it utilizes the precession of atom
Realize magnetic-field measurement.Its universal thought is to use and alkali metal atom D1 line jump frequency identical circularly polarized lights, to atom
Pumping is carried out, when the modulating frequency of circularly polarized light and the equal precession frequency of atom, optical magnetic resonance occurs, by extracting resonance
Frequency can calculate magnetic field size.Bell-Bloom gaussmeters are one kind of atom magnetometer.
Atom magnetometer depends on the measurement to transmitting light, light by atomic air chamber after, due to the mutual shadow in light and magnetic field
Ring, its optical characteristics have certain change.Light clearly changes magnetic strength with the interaction in atom, atom and magnetic field
The type and operational mode of meter.Common atom magnetometer has SERF (Spin-exchange Relaxation-free, without certainly
Rotation exchanges relaxation) gaussmeter, Mx gaussmeters and Bell-Bloom gaussmeters, they are all based on optical pumping technology and realize magnetic measurement
's.SERF gaussmeters require to be run under atomic weak magnetic field, so or with the passive magnetic shield of excellent in shielding performance, volume
Cannot reduce, or magnetic compensation is carried out using coil, the magnetic disturbance of electric current in compensation precision and coil is all difficult to control to.Mx magnetic strength
Meter is needed on atomic air chamber plus an oscillating field, so the synchronicity of pumping and spin has a significant impact, during measurement magnetic field
The error that presence intercouples.For Bell-Bloom gaussmeters, under may operate in larger magnetic field even earth's magnetic field, institute
It is simple with SERF gaussmeter structure compareds with very low to magnetic field requirements, it is easy to integrated；Due to instead of vibration with modulated light source
, so the synchronicity error without pumping and spin, while also without the coupling error in two magnetic field, compared with Mx gaussmeters
Also have great advantage.
Conventional Bell-Bloom gaussmeters use single light beam simultaneously as pumping light and detection light, can only measure scalar
Magnetic field, and many places need more Magnetic Field in scientific research and productive life, that is, need to use vector magnetometer.Such as
What realizes high-precision three-axle magnetic field measurement using Bell-Bloom principles, is a vital research of atom magnetometer
Content, not yet there is at present relevant report.
The content of the invention
The technology of the present invention solve problem：Overcome the deficiencies in the prior art, there is provided a kind of axle magnetic of Bell-Bloom automodulations three
The method and device of field measurement, on the basis of single beam Bell-Bloom scalar magnetometers, using dual-beam three axle magnetic is realized
Field measurement, compared with common vector atom magnetometer, light path is simple, and compact conformation, power consumption is relatively low, and service condition easily reaches
Arrive, it is easy to which miniaturization is integrated, with very high accuracy of detection and practical value.
The technical solution of the present invention：A kind of method of Bell-Bloom automodulations three-axle magnetic field measurement, using atom
Three-axle magnetic field measurement is realized to the automodulation effect of detection light during precession, along the x-axis direction an additional magnetic field Bx, there is two beam laser
Act in alkali metal atom air chamber simultaneously, the circularly polarized light for there are the D1 line jump frequencies of a branch of amplitude modulation along the z-axis direction is made
For pumping light.According to the principle of single beam Bell-Bloom scalar magnetometers, alkali metal atom can be around under external magnetic field
Magnetic field precession.The precession frequency of alkali metal atom is with the relation of external magnetic field：
ωL=2 π γ B (1)
Wherein, γ is the gyromagnetic ratio of the atom.
Change x-axis magnetic field size, when precession frequency and modulating frequency meet resonance condition, resonate, by z-axis
Photodetector can find the Frequency point that resonance occurs.The resonance condition of single beam Bell-Bloom gaussmeters is：
ωL=m ωmod, m=1,2,3 ... (2)
Wherein, m=1, i.e. ω are worked asL=ωmodWhen, resonant amplitude is maximum, and covibration is most obvious.According to resonant amplitude most
Modulating frequency ω of general goalmodWith added magnetic field Δ Bx, you can calculate x-axis magnetic field：
Bx=ωmod/2πγ-ΔBx (3)
There is the line polarized light of a branch of continuous D2 lines jump frequency along the x-axis direction as detection light, the atom of polarization is being led
There is precession under the action of a magnetic field, polarization vector has automodulation effect to line polarized light, and by ByCause x-axis light intensity change and
By BzThe x-axis light intensity variation phase difference for causing is pi/2.Using z-axis light intensity signal as reference signal, x-axis light intensity signal is used as treating
Demodulated signal, using lock-in amplifier B is obtainedyAnd Bz。
Based on above-mentioned Bell-Bloom automodulations three-axle magnetic field measurement method, a kind of axle of Bell-Bloom automodulations three is designed
Magnetic field measuring device, including pumping laser device, detection light laser, alkali metal atom air chamber, photodetector, lock mutually amplify
Device, signal generator, the driver of acousto-optic modulator, acousto-optic modulator, reflecting mirror, beam expanding lens, the polarizer, quarter wave plate and anti-
Feedback controller.The output signal respectively x with three-axle magnetic field information is to output, y to output and z to output.
The magnetic-field measurement in x-axis direction：Signal generator (is exported to one modulated signal of driver of acousto-optic modulator, driven
Dynamic device output is loaded with diffracting effect of the acousto-optic crsytal to laser in the radiofrequency signal of modulated signal control acousto-optic modulator.Pumping light
The line polarized light that laser instrument is produced is injected in acousto-optic modulator through reflecting mirror, obtains 1 order diffraction light of amplitude modulation.Amplitude is adjusted
The line polarized light of system becomes directional light through beam expanding lens, and circularly polarized light, circularly polarized light pair are become after the polarizer and quarter wave plate
Alkali metal atom in air chamber realizes optical pumping, used as pumping light.Along the x-axis direction plus a magnetic field, under external magnetic field, alkali
Metallic atom is around the precession of main field direction, precession frequency ωL=2 π γ B, wherein γ are the gyromagnetic ratio of the atom.Change x-axis
Magnetic field size, when the precession frequency of atom and the modulating frequency of pumping light meet condition ωL=m ωmod, m=1,2,3 ... when send out
Raw resonance.By ByAnd BzCompensate to 0 point, using photodetector the change of light intensity is detected, find modulation during resonant amplitude maximum
Frequency and added magnetic field Δ Bx, now Bx=ωmod/2πγ-ΔBx。
Y-axis direction and the magnetic-field measurement in z-axis direction：The line polarized light that detection light laser 2 is produced is direct through reflecting mirror
Inject atomic air chamber, incident direction is vertical with pumping light direction and through pumping light.When there is a small magnetic field in y-axis or z-axis,
There is projection in precession vector of the atom around total magnetic field, have automodulation to act on detection light, detection light light intensity generating period in x-axis
Property change.And ByThe light intensity change of generation and BzThe light intensity change frequency of generation is identical, and phase contrast is pi/2.Using photodetector
The light intensity change of detection light is obtained, used as signal to be demodulated, and Pump intensity change is turned to reference signal.Reference signal with treat
Demodulated signal is input in lock-in amplifier simultaneously, in-phase the and out-of-phase passages of lock-in amplifier export respectively By
Corresponding magnitude of voltage and BzCorresponding magnitude of voltage.Fig. 4 is BzIn-phase outputs and B when=0yRelation curve, Fig. 5 is By=0
When out-of-phase output and BzRelation curve.Work as By=BzWhen=0, two passage outputs are all 0, so atom self-regulated
Natural zero crossing is made, it is very advantageous for closed loop is realized.The B that lock-in amplifier is exportedyCorresponding magnitude of voltage and BzIt is corresponding
In magnitude of voltage difference input feedback controller, the electric current of output is added separately in y-axis and z-axis line circle, accurate to compensate y-axis and z-axis
Magnetic field.When two passage outputs of lock-in amplifier are all 0, ByAnd BzAdded magnetic field size as on two axial lines circle.
Present invention advantage compared with prior art is：
(1) existing atom scalar magnetometer (such as Bell-Bloom gaussmeters, Mx gaussmeters) is entered by measuring atom
Dynamic frequency realizes magnetic-field measurement, but can only obtain the information of Scalar Magnetic Field.Comparatively speaking, method proposed by the present invention can be obtained
To three-axle magnetic field information, the demand of scientific research activity and practical application is met；
(2) existing atom vector magnetometer (such as SERF gaussmeters) is only used for the measurement of Weak magentic-field.Comparatively speaking,
Method proposed by the present invention can realize the reality under ground magnetic environment on the premise of superhigh precision (can detect that fT magnitudes) is ensured
When Vector Magnetic Field measurement.
(3) compared with other extract the atom magnetometer of Vector Message from scalar magnetometer, method proposed by the present invention
The automodulation of detection light is acted on using atom precession, it is not necessary to extra modulation or bias magnetic field, so the noise for introducing
It is lower, the measurement of superhigh precision can be realized.
Description of the drawings
Fig. 1 is the principle schematic of measuring method of the present invention；
Fig. 2 is the light path and structural representation of measurement apparatus of the present invention；
Fig. 3 is the corresponding resonance in x-axis magnetic field and dispersion curve；
Fig. 4 is the relation curve in y-axis magnetic field and lock-in amplifier in-phase output amplitudes；
Fig. 5 is the relation curve in z-axis magnetic field and lock-in amplifier out-of-phase output amplitudes.
Specific embodiment
As shown in figure 1, Bell-Bloom automodulations three-axle magnetic field measurement method proposed by the present invention, using atom precession pair
The automodulation effect of detection light, using double-beam measurement three-axle magnetic field measurement is realized.
As shown in Fig. 2 realizing that the specific implementation step of three-axle magnetic field measurement is as follows using measurement apparatus of the present invention：
Step one：The acquisition of the pumping light of amplitude modulation：
Exported to 10 1 modulated signals of driver of acousto-optic modulator using signal generator 9, generally sine wave or
Person's square wave.The line polarized light that pumping laser device 1 is produced is injected in acousto-optic modulator 11 through reflecting mirror 12, obtains amplitude modulation
1 order diffraction light.The line polarized light of amplitude modulation becomes directional light through beam expanding lens 13, through the polarizer 14 and quarter wave plate 15
After become circularly polarized light, obtain the pumping light of amplitude modulation.
Step 2：The magnetic-field measurement of x-axis：
Along the x-axis direction plus a big magnetic field, it is desirable toMake main field approximate along the x-axis direction.In outer magnetic
Under field action, alkali metal atom is around the precession of main field direction, precession frequency ωL=2 π γ B, wherein γ are the gyromagnet of the atom
Than.Change x-axis magnetic field size, when the precession frequency of atom and the modulating frequency of pumping light meet condition ωL=m ωmod, m=1,
2,3 ... when resonate.The change of light intensity is detected using photodetector 4, resonant amplitude maximum, dispersion curve is found and is crossed at 0 point
When externally-applied magnetic field Δ Bx(resonance point as shown in Figure 3), now ωL=ωmod, x-axis magnetic field size, B can be obtainedx=ωmod/2
πγ-ΔBx。
Step 3：The magnetic-field measurement of y-axis and z-axis：
The line polarized light that detection light laser 2 is produced is emitted directly toward atomic air chamber 3 through reflecting mirror 12, incident direction with take out
Fortune light direction is vertically and through pumping light.When y-axis or z-axis have a not higher than small magnetic field for main field, atom is around total magnetic
There is projection in the precession vector of field, have automodulation to act on detection light in x-axis, the change of detection light light intensity generating period.And
ByThe light intensity change of generation and BzThe light intensity change frequency of generation is identical, and phase contrast is pi/2.Detected using photodetector 4
The light intensity change of light, used as signal to be demodulated, and Pump intensity change is turned to reference signal.Reference signal and signal to be demodulated
It is input into simultaneously in lock-in amplifier 5, the homophase passage (in-phase) of lock-in amplifier and the poor passage (out-of- of pi/2 phase
Phase) B is exported respectivelyyCorresponding magnitude of voltage and BzCorresponding magnitude of voltage.Fig. 4 is BzIn-phase outputs and B when=0yPass
It is curve, Fig. 5 is ByOut-of-phase outputs and B when=0zRelation curve.Work as By=BzWhen=0, two passages are exported all
For 0, so the natural zero crossing of atom automodulation, very advantageous for closed loop is realized.The B that lock-in amplifier 5 is exportedyCorrespondence
Magnitude of voltage and BzIn corresponding magnitude of voltage difference input feedback controller 16, the electric current of output is added separately to y-axis and z-axis line circle
On, it is accurate to compensate y-axis and z-axis magnetic field.When two passage outputs of lock-in amplifier are all 0, ByAnd BzAs institute on two axial lines circle
Plus magnetic field size.
Above example is provided just for the sake of the description purpose of the present invention, and is not intended to limit the scope of the present invention.This
The scope of invention is defined by the following claims.The various equivalents made without departing from spirit and principles of the present invention and repair
Change, all should cover within the scope of the present invention.
Claims (7)
1. a kind of method of Bell-Bloom automodulations three-axle magnetic field measurement, it is characterised in that：An additional magnetic field along the x-axis direction
Bx, there are two beam laser while acting in alkali metal atom air chamber (3), there is a branch of pumping light along the z-axis direction, using photodetection
Device (4) detection light intensity change, while polarized atom, B is calculated according to x to output (6)x；There is a branch of inspection along the x-axis direction
There is precession in light-metering, the atom of polarization, there is automodulation effect to line polarized light, using photodetector under main field effect
(4) detect light intensity change, using z-axis light intensity signal as reference signal, x-axis light intensity signal as signal to be demodulated, using lock phase
Amplifier (5) obtains y to output (7) and z to output (8), so as to be calculated ByAnd Bz。
2. the method for Bell-Bloom automodulations three-axle magnetic field measurement according to claim 1, it is characterised in that：It is described to take out
Fortune light is the circularly polarized light of amplitude modulation, and wavelength is alkali metal atom D1 line jump frequency respective wavelengths.
3. the method for Bell-Bloom automodulations three-axle magnetic field measurement according to claim 1, it is characterised in that：The inspection
Light-metering is continuous line polarized light, and wavelength is alkali metal atom D2 lines or D1 line jump frequency respective wavelengths.
4. the method for Bell-Bloom automodulations three-axle magnetic field measurement according to claim 1, it is characterised in that：It is described to take out
Fortune light is orthogonal with detection light and at grade.
5. the method for Bell-Bloom automodulations three-axle magnetic field measurement according to claim 1, it is characterised in that：It is describedMain field is approximate along the x-axis direction；According to the principle of single beam Bell-Bloom scalar magnetometers, alkali gold
Category atom can be around magnetic field precession under external magnetic field, and the precession frequency of alkali metal atom is with the relation of external magnetic field：
ωL=2 π γ B (1)
Wherein, γ is the gyromagnetic ratio of the atom；
Change x-axis magnetic field size, when precession frequency and modulating frequency meet resonance condition, resonate, by the photoelectricity of z-axis
Detector can find the Frequency point that resonance occurs；The resonance condition of single beam Bell-Bloom gaussmeters is：
ωL=m ωmod, m=1,2,3 ... (2)
Wherein, m=1, i.e. ω are worked asL=ωmodWhen, resonant amplitude is maximum, and covibration is most obvious, according to resonant amplitude maximum
Modulating frequency ωmodWith added magnetic field △ Bx, that is, calculate x-axis magnetic field：
Bx=ωmod/2πγ-△Bx (3)。
6. the method for Bell-Bloom automodulations three-axle magnetic field measurement according to claim 1, it is characterised in that：By ByDraw
The x-axis light intensity for rising changes and by BzThe x-axis light intensity variation phase difference for causing for pi/2, with x-axis light intensity signal with frequency z-axis light
Strong signal obtains B as reference using lock-in amplifier demodulationyAnd Bz。
7. a kind of Bell-Bloom automodulations three-axle magnetic field measurement apparatus are designed based on claim 1 methods described, its feature exists
In：Mutually put including pumping laser device (1), detection light laser (2), alkali metal atom air chamber (3), photodetector (4), lock
Big device (5), signal generator (9), the driver (10) of acousto-optic modulator, acousto-optic modulator (11), reflecting mirror (12), beam expanding lens
(13), the polarizer (14), quarter wave plate (15) and feedback controller (16)；The output signal respectively x with three-axle magnetic field information
To output (6), y to output (7) and z to output (8)；
The magnetic-field measurement in x-axis direction is：Signal generator (9) is exported to (10) modulation letters of driver of acousto-optic modulator
Number, driver (10) output of acousto-optic modulator is loaded with the interior acousto-optic crystalline substance of radiofrequency signal control acousto-optic modulator (11) of modulated signal
Diffracting effect of the body to laser；The line polarized light that pumping laser device (1) is produced injects acousto-optic modulator through reflecting mirror (12)
(11) in, 1 order diffraction light of amplitude modulation is obtained, the line polarized light of amplitude modulation becomes directional light, Jing through beam expanding lens (13)
Crossing becomes circularly polarized light after the polarizer (14) and quarter wave plate (15), circularly polarized light is to the alkali metal atom reality in atomic air chamber (3)
Existing optical pumping, as pumping light；Along the x-axis direction plus a magnetic field, it is desirable toMain field is made approximately along x-axis
Direction, under external magnetic field, alkali metal atom is around the precession of main field direction, precession frequency ωL=2 π γ B, wherein γ are
The gyromagnetic ratio of the atom, changes x-axis magnetic field size, when the precession frequency of atom and the modulating frequency of pumping light meet condition ωL
=m ωmod, m=1,2,3 ... when resonate；By ByAnd BzCompensate to 0 point, the change of light intensity is detected using photodetector (4)
Change, find resonant amplitude it is maximum when modulating frequency and added magnetic field △ Bx, now Bx=ωmod/2πγ-△Bx；
The magnetic-field measurement in y-axis direction and z-axis direction is：The line polarized light that detection light laser (2) is produced is through reflecting mirror (12)
It is emitted directly toward alkali metal atom air chamber (3), incident direction is vertical with pumping light direction and through pumping light, when y-axis or z-axis are present
During one small magnetic field for being not higher than main field, there is projection in precession vector of the atom around total magnetic field in x-axis, have to detection light certainly
Modulating action, the change of detection light light intensity generating period, and ByThe light intensity change of generation and BzThe light intensity change frequency phase of generation
Together, phase contrast is pi/2；The light intensity change of detection light is obtained using photodetector (4), as signal to be demodulated, and pumping light
Light intensity change is turned to reference signal, and reference signal is input in lock-in amplifier (5) simultaneously with signal to be demodulated, lock-in amplifier
(5) homophase passage (in-phase) and out-phase passage (out-of-phase) exports respectively ByCorresponding magnitude of voltage and BzCorrespondence
Magnitude of voltage, work as By=BzWhen=0, the output of two passages is all 0, so the natural zero crossing of atom automodulation, for realizing closed loop
B very advantageous, that lock-in amplifier (5) is exportedyCorresponding magnitude of voltage and BzCorresponding magnitude of voltage difference input feedback control
In device (16), the electric current of output is added separately in y-axis and z-axis line circle, accurate to compensate y-axis and z-axis magnetic field, works as lock-in amplifier
When (5) two passage outputs are all 0, ByAnd BzAdded magnetic field size as on two axial lines circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584391.6A CN104297702B (en) | 2014-10-27 | 2014-10-27 | Measurement method and device of Bell-Bloom self-modulation three-axis magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584391.6A CN104297702B (en) | 2014-10-27 | 2014-10-27 | Measurement method and device of Bell-Bloom self-modulation three-axis magnetic field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104297702A CN104297702A (en) | 2015-01-21 |
| CN104297702B true CN104297702B (en) | 2017-04-12 |
Family
ID=52317505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410584391.6A Expired - Fee Related CN104297702B (en) | 2014-10-27 | 2014-10-27 | Measurement method and device of Bell-Bloom self-modulation three-axis magnetic field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104297702B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459282A (en) * | 2018-01-30 | 2018-08-28 | 中国科学院生物物理研究所 | Magneticencephalogram detection device and method based on atom magnetometer/gradometer |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301526B (en) * | 2015-11-10 | 2017-12-22 | 北京航空航天大学 | A kind of magnetic micro imaging method and device |
| CN105929458B (en) * | 2016-03-21 | 2018-06-15 | 吉林大学 | Aviation magnetic vector detection device and monitoring method |
| CN105896237B (en) * | 2016-05-26 | 2018-12-21 | 中国人民解放军国防科学技术大学 | A kind of axial magnetic field adjustment device and method of adjustment in optical pumping pump apparatus |
| CN106443520A (en) * | 2016-11-09 | 2017-02-22 | 北京航空航天大学 | Biaxial atomic spinning magnetometer |
| CN106725342B (en) * | 2017-01-09 | 2019-08-30 | 上海理工大学 | Magneticencephalogram detection device based on vector whirlpool light beam |
| CN106842074B (en) * | 2017-03-03 | 2019-07-02 | 中国人民解放军国防科学技术大学 | Three axial vector atom magnetometers and application method based on longitudinal magnetic field modulation |
| CN109752671B (en) * | 2017-11-03 | 2021-05-11 | 北京自动化控制设备研究所 | Stable control system for optical frequency shift of atomic magnetometer |
| CN108535668B (en) * | 2018-03-30 | 2019-08-16 | 中国科学院武汉物理与数学研究所 | A method of remnant field inside compensation laser atom magnetometer magnetic shielding cover |
| CN108717168B (en) * | 2018-05-04 | 2020-12-18 | 北京航天控制仪器研究所 | Scalar magnetic field gradient measuring device and method based on light field amplitude modulation |
| CN109738837B (en) * | 2019-02-22 | 2020-09-25 | 北京航空航天大学 | Residual magnetic field in-situ compensation method for single-beam SERF atomic magnetometer |
| CN110646751B (en) * | 2019-09-18 | 2021-09-14 | 北京自动化控制设备研究所 | Scalar atomic magnetometer closed-loop control system and method based on in-phase excitation |
| CN110672083B (en) * | 2019-10-17 | 2021-05-14 | 北京航空航天大学 | Single-axis modulation type magnetic compensation method of SERF (spin exchange fiber) atomic spin gyroscope |
| CN110673069B (en) * | 2019-11-07 | 2022-05-13 | 之江实验室 | Three-dimensional vector weak magnetic field detection device and detection method |
| CN112526413B (en) * | 2020-10-29 | 2022-10-21 | 浙江工业大学 | Method and system for realizing vector magnetic field measurement of SERF magnetometer |
| CN112363095A (en) * | 2020-11-27 | 2021-02-12 | 之江实验室 | Laser stabilization type SERF atomic magnetometer signal detection system based on acousto-optic modulation |
| CN112649765B (en) * | 2020-12-11 | 2022-07-15 | 北京自动化控制设备研究所 | Omnidirectional magnetic field measuring method and measuring system using same |
| CN112946539B (en) * | 2021-01-04 | 2023-09-01 | 北京航空航天大学 | Single-beam reflection type triaxial magnetic field measuring device based on SERF |
| CN113253165B (en) * | 2021-06-11 | 2021-09-24 | 中国科学院精密测量科学与技术创新研究院 | Novel all-optical atomic magnetometer implementation device |
| CN113721172A (en) * | 2021-07-27 | 2021-11-30 | 北京量子信息科学研究院 | Magnetometer and magnetometer detection method |
| CN113739821B (en) * | 2021-08-31 | 2022-06-17 | 北京航空航天大学 | Full-automatic magnetic compensation method of atomic spin gyroscope based on PID algorithm |
| CN115079059A (en) * | 2022-07-15 | 2022-09-20 | 东南大学 | A probe that is used for SERF atomic magnetometer to dismantle air chamber |
| CN118033499B (en) * | 2024-02-23 | 2024-09-20 | 北京航空航天大学 | Triaxial vector magnetic field measurement method for single-beam NMOR atomic magnetometer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438877A (en) * | 2013-09-02 | 2013-12-11 | 北京航空航天大学 | Inertia and magnetic field integration measuring method based on SERF (spin-exchange-relaxation-free) atomic spin effect |
| CN103869265A (en) * | 2014-03-26 | 2014-06-18 | 北京大学 | Atom magnetic sensor for optical pump magnetometer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7723985B2 (en) * | 2007-05-25 | 2010-05-25 | Geometrics, Inc. | Altered sweep bell-bloom magnetometer |
| JP5645011B2 (en) * | 2010-11-12 | 2014-12-24 | 独立行政法人情報通信研究機構 | Modulated light analyzer and electric field or magnetic field measuring probe device using the modulated light analyzer |
| US9097750B2 (en) * | 2013-01-17 | 2015-08-04 | Govt. Of India Anushakti Bhavan, Chatrapati Shivaji Maharaj Marg | Dual purpose atomic device for realizing atomic frequency standard and magnetic field measurement |
-
2014
- 2014-10-27 CN CN201410584391.6A patent/CN104297702B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438877A (en) * | 2013-09-02 | 2013-12-11 | 北京航空航天大学 | Inertia and magnetic field integration measuring method based on SERF (spin-exchange-relaxation-free) atomic spin effect |
| CN103869265A (en) * | 2014-03-26 | 2014-06-18 | 北京大学 | Atom magnetic sensor for optical pump magnetometer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459282A (en) * | 2018-01-30 | 2018-08-28 | 中国科学院生物物理研究所 | Magneticencephalogram detection device and method based on atom magnetometer/gradometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104297702A (en) | 2015-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104297702B (en) | Measurement method and device of Bell-Bloom self-modulation three-axis magnetic field | |
| Tang et al. | High-sensitivity operation of a single-beam atomic magnetometer for three-axis magnetic field measurement | |
| CN108519564B (en) | Three-axis solid-state atomic magnetic sensor based on diamond NV color center and magnetic field detection method | |
| CN103969604B (en) | Radio frequency atomic magnetometer and its method for measurement NMR signal | |
| US9964610B2 (en) | System for detecting zero-field resonance | |
| US20150022200A1 (en) | Optically pumped magnetometer and optical pumping magnetic force measuring method | |
| Gerginov et al. | Pulsed operation of a miniature scalar optically pumped magnetometer | |
| CN108519566B (en) | SERF atomic magnetometer device and method based on optical frequency shift modulation | |
| US8421455B1 (en) | Pulsed free induction decay nonlinear magneto-optical rotation apparatus | |
| CN109827559B (en) | Nuclear magnetic resonance gyroscope device for improving atomic polarization uniformity | |
| US20190293425A1 (en) | Gyrocope based on nitrogen vacancy centers in diamond | |
| Patton et al. | A remotely interrogated all-optical 87Rb magnetometer | |
| CN103412268A (en) | Single-beam unshielded atom magnetometer and detection method thereof | |
| CN114114096B (en) | Microwave-free diamond NV color center magnetometer based on magnetic flux collector | |
| RU199631U1 (en) | Quantum Mz magnetometer | |
| CN107656219A (en) | A kind of rubidium atom magnetometer | |
| CN104280023A (en) | Coherent layout confinement atomic clock and nuclear magnetic resonance atomic gyroscope integrated system | |
| CN110530497A (en) | Interference-type optical fiber vibrating sensing demodulating system and method based on optical-electronic oscillator | |
| CN107656220A (en) | A kind of method based on rubidium atom magneto-optic rotation effect measurement magnetic field | |
| Yin et al. | The influence of temperature and modulated magnetic field on the transmission intensity of atomic magnetometer | |
| CN112433186B (en) | Low-power nuclear magnetic resonance quantum magnetometer measurement system and measurement method thereof | |
| Li et al. | Optimization of the alkali-metal density ratio in a hybrid optical pumping atomic magnetometer | |
| Liu et al. | The Fiber Self-focusing Integrated Nitrogen Vacancy Magnetometer | |
| CN117330046A (en) | Remote magnetic detection type nuclear magnetic resonance gyroscope based on separated magnetic shielding | |
| Li et al. | High sensitivity closed-loop Rb optically pumped magnetometer for measuring nuclear magnetization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20171027 |