CN108627780A - Weak magnetic quantum sensor-based system based on vector Mathieu light beams - Google Patents
Weak magnetic quantum sensor-based system based on vector Mathieu light beams Download PDFInfo
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- CN108627780A CN108627780A CN201810375935.6A CN201810375935A CN108627780A CN 108627780 A CN108627780 A CN 108627780A CN 201810375935 A CN201810375935 A CN 201810375935A CN 108627780 A CN108627780 A CN 108627780A
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- light beams
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- mathieu
- mathieu light
- polarization
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- 230000010287 polarization Effects 0.000 claims abstract description 46
- 150000001340 alkali metals Chemical group 0.000 claims abstract description 33
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 32
- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 239000003446 ligand Substances 0.000 claims abstract description 15
- 150000003839 salts Chemical class 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000005389 magnetism Effects 0.000 claims abstract description 11
- 230000009466 transformation Effects 0.000 claims abstract description 11
- 230000008859 change Effects 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 12
- 239000002585 base Substances 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052792 caesium Inorganic materials 0.000 claims description 3
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000002059 diagnostic imaging Methods 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 229910052701 rubidium Inorganic materials 0.000 claims description 3
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000005622 photoelectricity Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/032—Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/40—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for measuring magnetic field characteristics of the earth
Abstract
The present invention relates to a kind of weak magnetic quantum sensor-based systems based on vector Mathieu light beams, cylindrical lens are passed through by the circle Gaussian beam that He Ne lasers are sent out, it is Elliptical Gaussian Beam by circle Gaussian Beam Transformation, then become planar light after reaching collimating and beam expanding system, the vector Mathieu light beams of salt free ligands are generated using diaphragm, axicon；When vector Mathieu light beams pass through alkali metal atom gas compartment, the indoor alkali metal atom of alkali metal atom gas is set to generate spin polarization by external magnetic field to be measured, and by the first and second photoelectric sensor, by the deflection angle of plane of polarization after polarization beam apparatus, and the variation of optical eddy is converted to the variation of electric signal and passes to amplifying circuit, it is handled for computer, to detect earth magnetism size.The present invention have the function of low in energy consumption, system structure it is simple, convenient for structure, detection information amount is big, spatial resolution is high, flexibility is good, be easy to expand, have a wide range of application the features such as.
Description
Technical field
The present invention is a kind of geomagnetic sensor based on quantum effect, is based particularly on a kind of vector Mathieu light beams
Weak magnetic quantum sensor-based system, can accurately, steadily detect earth's magnetic field.
Background technology
Traditionally, as measure earth magnetism geomagnetic sensor, it is known that there is magnetic flux gate (FG types) geomagnetic sensor to also have
A kind of improved geomagnetic sensor of Japan, technology may refer to Japan Patent, the entitled GEMONAGNETIC of patent
The mandate time of SENSOR, Patent No. US9465134B2, patent are on October 11st, 2016.Though foregoing invention can detect
To earth magnetism, still, however it remains the deficiency of some essence：1) detection earth magnetism traditionally needs alternating current to pass through magnet exciting coil
The iron core wound is subjected to magnetic saturation, prodigious power consumption is during which will produce, and easily receive the influence of external magnetic field, built
Journey is complicated, and performance is unstable.2) detection sensitivity of detection device is limited to the complexity of testing principle and system structure, can not
It is accurately measured based on quantum effect.3) detection device volume is big, cannot achieve miniaturization, construction cost is high, detection magnetic
Field limited spatial resolution, influences use scope.
Invention content
It is an object of the invention to deficiencies in view of the above technology, provide a kind of weak magnetic based on vector Mathieu light beams
Quantum sensor-based system so having the property of high sensitivity, while having performance steady since the system is to be based on quantum effect
Calmly, the features such as building process is simple.
Technical scheme of the present invention：A kind of weak magnetic quantum sensor-based system based on vector Mathieu light beams has and generates arrow
Measure the structure of Mathieu light beams and the weak magnetic quantum geomagnetism detecting structure based on vector Mathieu light beams, the generation vector
The structure of Mathieu light beams includes He-Ne lasers, cylindrical lens, collimating and beam expanding system, diaphragm, axicon；By He-Ne laser
The circle Gaussian beam that device is sent out passes through cylindrical lens, is Elliptical Gaussian Beam by circle Gaussian Beam Transformation, then reaches two lens
Become planar light after the collimating and beam expanding system of composition, using diaphragm, axicon, generates salt free ligands Mathieu light beams；The base
In the weak magnetic quantum geomagnetism detecting structure of vector Mathieu light beams include collimating and beam expanding system, magnetic screen, alkali metal atom, alkali
Metallic atom gas compartment, polarization beam apparatus, the first and second photodetector, amplifier, computer；Converted through axicon
Salt free ligands Mathieu light beams be the vector Mathieu light beams with certain frequency, vector Mathieu light beams itself carry with partially
The related spin angular momentaum of characteristic of shaking and with the relevant orbital angular momentum of phase characteristics, when vector Mathieu light beams by alkali gold
When belonging to atomic gas room, the indoor alkali metal atom of alkali metal atom gas is set to generate spin polarization by external magnetic field to be measured,
In this course, vector Mathieu light beams are had an effect with alkali metal atom, and vector Mathieu light beams itself is caused to carry
Spin angular momentaum and orbital angular momentum change, i.e., polarization characteristic changes with phase characteristics, show as plane of polarization hair
Quantity, size, the orientation of raw deflection and optical eddy change, and by the first and second photoelectric sensing after polarization beam apparatus
Device, the variation that the variation of the deflection angle of plane of polarization and optical eddy is converted to electric signal pass to amplifying circuit, for meter
Calculation machine is handled, to detect earth magnetism size.
The salt free ligands Mathieu light beams are the light field eigen solutions in elliptic cylinder coordinates system, with complete characteristic and certainly
More characteristic can be used for optical micromanipulation, medical imaging, optic communication and detection equivalent fields.
Alkali metal atom in the alkali metal atom gas compartment is one kind in sodium, potassium, rubidium, caesium.
The refractive index of the axicon is n=1.458, and base angle is γ=1 °, it can be achieved that optical beam transformation, and suitable for passing
The optical system of defeated high-energy and different frequency light wave.
The focal length of the cylindrical lens is f=130mm, it can be achieved that being Elliptical Gaussian Beam by circle Gaussian Beam Transformation.
The focal length of two lens is respectively f in the collimating and beam expanding system1=15mm, f2=190mm, can will be oval high
This optical beam transformation is at the plane wave modulated with oval G amplitude.
The polarization beam apparatus is three-dimensional polarization beam apparatus.
Compared with prior art, the beneficial effects of the invention are as follows：
1) device of detection earth magnetism traditionally needs alternating current that the iron core wound progress magnetic is satisfied by magnet exciting coil
With during which will produce prodigious power consumption, and easily receive the influence of external magnetic field, building process is complicated, and performance is unstable.This dress
Set utilize be vector Mathieu light beams be elliptic cylinder coordinates system in light field eigen solution, have complete characteristic, self-healing feature,
Non-diffraction beam.Essence eliminates the excessive problem of power consumption caused by iron core magnetic is satisfied, and the structure of system from principle
Simply, stability is good.
2) detection sensitivity of detection device is limited to the complexity of testing principle and system structure, can not be based on quantum and imitate
It should accurately be measured.The present invention is the salt free ligands Mathieu light beams based on quantum effect, vector Mathieu light beams and alkali
Metallic atom is had an effect, cause itself carry spin angular momentaum and orbital angular momentum change, i.e., polarization characteristic with
Phase characteristics change, and show as that plane of polarization deflects and the quantity of optical eddy, size, orientation etc. change.
The variation of the deflection angle of plane of polarization and optical eddy is converted to the variation of electric signal using photoelectric sensor, thus
With high sensitivity, the characteristics of high measurement accuracy.
3) detection device volume is big, cannot achieve miniaturization, and structure is complicated, detects magnetic field limited spatial resolution, influences
Use scope.The salt free ligands Mathieu light beams that the design uses are the light field eigen solutions in cylindroid cylindrical coordinate, are generated
Device is simple, and easily operated.
Description of the drawings
Fig. 1 is the weak magnetic quantum sensor-based system structural schematic diagram based on salt free ligands Mathieu light beams of the present invention.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of weak magnetic quantum sensor-based system based on vector Mathieu light beams, has and generates vector
The structure of Mathieu light beams, including He-Ne lasers 1, cylindrical lens 2, collimating and beam expanding system 3, diaphragm 4, axicon 5.By laser
The circle Gaussian beam that device is sent out passes through cylindrical lens 2, is Elliptical Gaussian Beam by circle Gaussian Beam Transformation, then reaches two lens
Become planar light after the collimating and beam expanding system 3 of composition, finally reaches the axicon 4 Jing Guo special designing, generating has complete spy
The salt free ligands Mathieu light beams of property.Weak magnetic quantum geomagnetism detecting structure based on vector Mathieu light beams includes collimator and extender system
System 6, magnetic screen 7, alkali metal atom 8, alkali metal atom gas compartment 9, polarization beam apparatus 10, the first and second photodetector 11,
12, amplifier 13, computer 14.Through the converted next vector Mathieu light beams with certain frequency of axicon 4, vector
Mathieu light beams itself carry related with polarization characteristic spin angular momentaum and with the relevant orbital angular momentum of phase characteristics, when
When vector Mathieu light beams pass through alkali metal atom gas compartment 9, since external magnetic field to be measured can be such that alkali metal atom 8 generates
Spin polarization, in this course, vector Mathieu light beams are had an effect with alkali metal atom 8, lead to itself carrying oneself
Angular momentum and orbital angular momentum change, i.e., polarization characteristic changes with phase characteristics, show as plane of polarization and occur partially
Turn and quantity, size, the orientation etc. of optical eddy change.Using the first and second photoelectric sensor 11,12 by plane of polarization
Deflection angle and the variation of optical eddy be converted to the variation of electric signal, pass to amplifying circuit 13, for computer 14 into
Row processing, to detect earth magnetism size.
The basic principle of the present invention：Use the salt free ligands Mathieu light beams based on quantum effect.Vector Mathieu light
Beam is the light field eigen solution in elliptic cylinder coordinates system, has complete characteristic and self-healing feature.Vector Mathieu light beams itself carry
Spin angular momentaum related with polarization characteristic and with the relevant orbital angular momentum of phase characteristics, when vector Mathieu light beams pass through
When alkali metal atom gas, since external magnetic field to be measured can make alkali metal atom generate spin polarization, in this course, arrow
Amount Mathieu light beams are had an effect with alkali metal atom, and the spin angular momentaum itself carried and orbital angular momentum is caused to occur
Variation, i.e., polarization characteristic changes with phase characteristics, show as plane of polarization deflect and the quantity of optical eddy, greatly
Small, orientation etc. changes.The variation of the deflection angle of plane of polarization and optical eddy is converted into electricity using photoelectric sensor
The variation of signal, passes to amplifying circuit, is handled for computer, to detect earth magnetism size.
In the present embodiment, the salt free ligands Mathieu light beams are the light field eigen solutions in elliptic cylinder coordinates system, have been had
Standby characteristic and self-healing feature can be applied to optical micromanipulation, medical imaging, optic communication and detection equivalent fields.The alkali
Alkali metal in metallic atom gas compartment 11 is one kind of sodium, potassium, rubidium, caesium.The axicon 5 has special structure,
Refractive index is n=1.458, and base angle is γ=1 °, can realize optical beam transformation, and high conversion efficiency.The cylindrical lens (2)
Focal length be f=130mm, can realize will circle Gaussian Beam Transformation be Elliptical Gaussian Beam.In the collimating and beam expanding system 3
The focal length of two lens is respectively f1=15mm, f2Elliptical Gaussian Beam is transformed into oval G amplitude tune by=190mm
The plane wave of system.The polarization beam apparatus 10 is three-dimensional polarization beam apparatus.
The course of work of the present embodiment：Cylindrical lens are passed through by the circle Gaussian beam that laser is sent out, circle Gaussian beam is become
It is changed to Elliptical Gaussian Beam, becomes planar light after then reaching the collimating and beam expanding system that two lens are constituted, finally reaches and passes through
The axicon of special designing generates the salt free ligands Mathieu light beam vector Mathieu light beams itself with complete characteristic and carries
Spin angular momentaum related with polarization characteristic and with the relevant orbital angular momentum of phase characteristics, when vector Mathieu light beams pass through
When alkali metal atom gas, since external magnetic field to be measured can make alkali metal atom generate spin polarization, in this course, arrow
Amount Mathieu light beams are had an effect with alkali metal atom, and the spin angular momentaum itself carried and orbital angular momentum is caused to occur
Variation, i.e., polarization characteristic changes with phase characteristics, show as plane of polarization deflect and the quantity of optical eddy, greatly
Small, orientation etc. changes.The variation of the deflection angle of plane of polarization and optical eddy is converted into electricity using photoelectric sensor
The variation of signal, passes to amplifying circuit, is handled for computer, to detect earth magnetism size.
The present embodiment detects earth's magnetic field, and the vector Mathieu light beams of use are the light in elliptic cylinder coordinates system
Eigen solution has complete characteristic, the characteristic with salt free ligands, and use Rd alkali metal atoms steam, realize it is highly sensitive
Degree, geomagnetism detecting that stability is strong, have low in energy consumption, system structure is simple, convenient for structure, detection information amount is big, space point
Resolution is high, flexibility is good, function is easy to expand, the features such as having a wide range of application.
Technical scheme of the present invention and advantageous effect is described in detail in above-described specific embodiment, answers
What is understood is not intended to restrict the invention the foregoing is merely presently most preferred embodiment of the invention, all principles in the present invention
Any modification, supplement and same replacement for being made in range etc., should all be included in the protection scope of the present invention.
The vector Mathieu light beams used in the present invention are the light field eigen solutions in elliptic cylinder coordinates system, have complete spy
Property, with salt free ligands etc. excellent characteristic, used photoelectric sensor electronic circuit, earth's magnetic field processing with analysis etc. more at
Ripe technology.The present invention inventive point be utilize the Mathieu light beams based on the light field eigen solution in elliptic cylinder coordinates system,
Detect atomic magnetic force meter in structure face.Vector Mathieu light beams itself carry related with polarization characteristic spin angular momentaum and with position
The relevant orbital angular momentum of phase behaviour, when vector Mathieu light beams pass through alkali metal atom gas, due to external magnetic to be measured
Field can make alkali metal atom generate spin polarization, and in this course, vector Mathieu light beams are made with alkali metal atom
With, cause itself carry spin angular momentaum and orbital angular momentum change, i.e., polarization characteristic becomes with phase characteristics
Change, shows as that plane of polarization deflects and the quantity of optical eddy, size, orientation etc. change.Utilize photoelectric sensor
The variation that the variation of the deflection angle of plane of polarization and optical eddy is converted to electric signal, passes to amplifying circuit, for calculating
Machine is handled, to detect earth magnetism size.The device has the spies such as low-power consumption, simple in structure, high sensitivity, stability height
Point.
Claims (7)
1. a kind of weak magnetic quantum sensor-based system based on vector Mathieu light beams has the structure for generating vector Mathieu light beams
With the weak magnetic quantum geomagnetism detecting structure based on vector Mathieu light beams, it is characterised in that：The generation vector Mathieu light
The structure of beam includes He-Ne lasers (1), cylindrical lens (2), collimating and beam expanding system (3), diaphragm (4), axicon (5)；By He-
The circle Gaussian beam that Ne lasers (1) are sent out passes through cylindrical lens (2), is Elliptical Gaussian Beam by circle Gaussian Beam Transformation, then
Become planar light after reaching the collimating and beam expanding system (3) that two lens are constituted, using diaphragm (4), axicon (4), generates nothing
Diffraction Mathieu light beams；The weak magnetic quantum geomagnetism detecting structure based on vector Mathieu light beams includes collimating and beam expanding system
(6), magnetic screen (7), alkali metal atom (8), alkali metal atom gas compartment (9), polarization beam apparatus (10), the first and second photoelectricity are visited
Survey device (11,12), amplifier (13), computer (14)；It is tool through the converted next salt free ligands Mathieu light beams of axicon (4)
There are the vector Mathieu light beams of certain frequency, vector Mathieu light beams itself to carry spin angular momentaum related with polarization characteristic
With with the relevant orbital angular momentum of phase characteristics, when vector Mathieu light beams pass through alkali metal atom gas compartment (9) when, by waiting for
The external magnetic field of survey makes the alkali metal atom (8) in alkali metal atom gas compartment (9) generate spin polarization, in this course,
Vector Mathieu light beams are had an effect with alkali metal atom (8), the spin angular motion for causing vector Mathieu light beams itself to carry
Amount and orbital angular momentum change, i.e., polarization characteristic changes with phase characteristics, shows as plane of polarization and deflects, and
Quantity, size, the orientation of optical eddy change, and after polarization beam apparatus (10) by the first and second photoelectric sensor (11,
12) variation that the variation of the deflection angle of plane of polarization and optical eddy is converted to electric signal passes to amplifying circuit (13),
It is handled for computer (14), to detect earth magnetism size.
2. the weak magnetic quantum sensor-based system according to claim 1 based on vector Mathieu light beams, it is characterised in that：Institute
The salt free ligands Mathieu light beams stated are the light field eigen solutions in elliptic cylinder coordinates system, have complete characteristic and self-healing feature, can use
In optical micromanipulation, medical imaging, optic communication and detection equivalent fields.
3. the weak magnetic quantum sensor-based system according to claim 1 based on vector Mathieu light beams, it is characterised in that：Institute
Alkali metal atom (8) in the alkali metal atom gas compartment (9) stated is one kind in sodium, potassium, rubidium, caesium.
4. the weak magnetic quantum sensor-based system according to claim 1 based on vector Mathieu light beams, it is characterised in that：Institute
The refractive index for the axicon (5) stated is n=1.458, and base angle is γ=1 °, it can be achieved that optical beam transformation, and suitable for transmission high energy
The optical system of amount and different frequency light wave.
5. the weak magnetic quantum sensor-based system according to claim 1 based on vector Mathieu light beams, it is characterised in that：Institute
The focal length for the cylindrical lens (2) stated is f=130mm, it can be achieved that being Elliptical Gaussian Beam by circle Gaussian Beam Transformation.
6. the weak magnetic quantum sensor-based system according to claim 1 based on vector Mathieu light beams, it is characterised in that：Institute
The focal length of two lens is respectively f in the collimating and beam expanding system (3) stated1=15mm, f2=190mm can become Elliptical Gaussian Beam
Change the plane wave with oval G amplitude modulation into.
7. the weak magnetic quantum sensor-based system according to claim 1 based on vector Mathieu light beams, it is characterised in that：Institute
The polarization beam apparatus (10) stated is three-dimensional polarization beam apparatus.
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| CN201810375935.6A CN108627780B (en) | 2018-04-24 | 2018-04-24 | Vector Mathieu beam-based weak magnetic quantum sensing system |
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| CN201810375935.6A CN108627780B (en) | 2018-04-24 | 2018-04-24 | Vector Mathieu beam-based weak magnetic quantum sensing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109342980A (en) * | 2018-10-31 | 2019-02-15 | 浙江工业大学 | Monochromatic light Mx atom magnetometer based on elliptical light |
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