CN106772158B - A kind of probe of caesium optical pumped magnetometer - Google Patents
A kind of probe of caesium optical pumped magnetometer Download PDFInfo
- Publication number
- CN106772158B CN106772158B CN201611125930.5A CN201611125930A CN106772158B CN 106772158 B CN106772158 B CN 106772158B CN 201611125930 A CN201611125930 A CN 201611125930A CN 106772158 B CN106772158 B CN 106772158B
- Authority
- CN
- China
- Prior art keywords
- light
- optical
- caesium
- atomic absorption
- light passing
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/26—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux using optical pumping
Abstract
The invention discloses a kind of probes of caesium optical pumped magnetometer, including Atomic absorption room, spherical housing with one filled with atomic gas, principle are the optical pumping effect measurement external magnetic fields of the 894nm monochromatic light emitted by caesium spectrum lamp and atomic gas interaction, and Atomic absorption is wound with excitation coil on room；Photocell, the tangent setting of spherical housing with Atomic absorption room pass through the light that Atomic absorption room is projected for detecting pump light；Light passing window, at least there are three, be uniformly wound around on spherical housing, each light passing window connects a columnar optical channel, constitutes optical axis, the opening direction of optical channel all the way and faces away from the side that photronic spherical housing is arranged, the angle of two neighboring optical axis is equal；The light of caesium spectrum lamp, sending passes through combined lens, and the right-circularly polarized light for becoming monochromatic is irradiated on photocell behind Atomic absorption room.Optical pumped magnetometer provided by the invention probe working region without dead angle, small in size, low energy consumption.
Description
Technical field
The present invention relates to magnetic field detection instrument technical fields, more particularly to a kind of probe of caesium optical pumped magnetometer.
Background technique
Caesium optical pumped magnetometer is one kind of optically detected magnetic resonance magnetometer, can be worked under earth's magnetic field, commercial caesium optical pumping
Magnetometer all works in the case where light excites operating mode.For single probe, when the pumping of the caesium absorption chamber in external magnetic field and optical pumping
When light direction of illumination (i.e. optical axis) is at an angle, the probe no signal output of caesium optical pumping causes caesium optical pumped magnetometer not work, no
Workable angular regions are known as dead zone.As shown in Figure 1, caesium optical pumped magnetometer has 2 dead zones, if with horizontal direction for 0 °, light
Axis direction is then 90 °, and the dead zone range of the probe of caesium optical pumped magnetometer is 0 °~5 °, 80 °~90 °, is referred to as equator dead zone
With the two poles of the earth dead zone.External magnetic field and probe axis angle should be avoided to fall into dead zone in use.
In the prior art, in order to solve the dead-time problem of caesium optical pumped magnetometer, usually there are 2 kinds of schemes: a kind of using universal
The angle of the mechanical mechanism adjustment probe of type is saved, as shown in Fig. 2, this method tracking performance is good, precision is high, but if wants
Accomplish to automatically track, then needs complicated mechanical mechanism and control circuit, volume weight and cost all very high.Another scheme is
The dead zone of each probe is mutually staggered by the independent probe for being mutually 45 degree with 3, can guarantee under any circumstance at least one
The optical axis and external magnetic field angle of a probe be not in dead zone.But 3 sets of independent probes of this method needs, i.e. 3 caesium absorption chambers,
3 photoelectric devices etc., volume, weight and the power consumption of the caesium optical pumped magnetometer for the composition that causes thus to pop one's head in are equally very big.
Summary of the invention
The spy without dead angle, the caesium optical pumped magnetometer that small in size, low energy consumption that the object of the present invention is to provide a kind of working regions
Head.
To achieve the above object, the present invention provides a kind of probes of caesium optical pumped magnetometer, comprising:
Atomic absorption room has a spherical housing filled with atomic gas, for by incident light and atomic gas phase
Interaction generates pump light and transmits outward；Excitation coil is wound on the Atomic absorption room；
Photocell, the tangent setting of spherical housing with the Atomic absorption room, for detecting pump light by the atom
The light that absorption chamber projects；
Light passing window, at least there are three, be uniformly wound around on the spherical housing, each light passing window connection one is cylinder-shaped
Optical channel, form optical axis all the way, it is described photronic described spherical outer that the opening direction of the optical channel faces away from setting
The side of shell, two neighboring optical axis included angle are equal；
Caesium spectrum lamp, the light-emitting window of each caesium spectrum lamp and the light passing road identical as the light passing window quantity
Opening be correspondingly arranged, by high frequency pumping shine；
Combined lens, it is identical as the light passing window quantity, it is set between each caesium spectrum lamp and the light passing road, institute
Stating combined lens includes optical filter, polarizing film and 1/4 slide, for the light of the incident caesium spectrum lamp to be become 894nm
Monochromatic right-circularly polarized light.
Optionally, the light passing window be three, formed 3 road optical axises, the optical axis with perpendicular to the photronic diameter
Angle be in 30 degree to 60 degree.
Optionally, the Atomic absorption room, the enclosed construction that light passing window is integral type, the optical channel and the light passing window
Connecting pin shape and the shape of the light passing window match.
Optionally, the light passing window is the light hole opened up on the Atomic absorption room, and the opening of the optical channel is logical
Translucent construction closing is crossed, and the optical channel and the Atomic absorption room are integral type sealing structure.
Optionally, the atomic gas is Cs atom gas.
Optionally, the combined lens are successively to be bonded by optical filter, polarizing film and 1/4 slide by binder,
Light-emitting window of the optical filter close to the caesium spectrum lamp.
The specific embodiment provided according to the present invention, the invention discloses following technical effects: caesium light provided by the invention
The probe for pumping magnetometer includes an Atomic absorption room, a photocell, three light passing windows, and light identical with light passing window quantity
Channel constitutes the mutual angulation in 3 tunnels using multiple light passing windows and the multiple optical channels being arranged on Atomic absorption room at an angle
The optical axis of degree so that the dead angle of probe that every road optical axis is constituted mutually is staggered, with can guarantee under any circumstance at least one
The optical axis and external magnetic field angle of probe be not in dead zone, to realize probe working region without dead angle.And this probe only has
One Atomic absorption room, a photocell compare existing three independent probe schemes: 3 caesium absorption chambers, three photoelectric devices
For the probe of composition, component has lacked 2/3rds, so that volume is smaller, compact-sized, energy consumption is also accordingly reduced, while also dropping
Low production cost.Compared to the existing scheme using cating nipple adjustment mechanical angle, this programme is not necessarily to mechanical device control
The rotation for making probe, improves reliability, reduces costs.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is that the working region of caesium optical pumped magnetometer probe in the prior art divides figure；
Fig. 2 is the structural schematic diagram adjusted the angle in the prior art using universal joint；
Fig. 3 is the perspective view of the probe of caesium optical pumped magnetometer provided by the invention；
Fig. 4 is the main view of the probe of caesium optical pumped magnetometer provided by the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The spy without dead angle, the caesium optical pumped magnetometer that small in size, low energy consumption that the object of the present invention is to provide a kind of working regions
Head.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 3 is the perspective view of the probe of caesium optical pumped magnetometer provided by the invention；Fig. 4 is caesium optical pumping magnetic provided by the invention
The main view of the probe of power instrument.As shown in Figure 3-4, the probe of caesium optical pumped magnetometer provided by the invention, including Atomic absorption room
1, photocell 2, light passing window 3, optical channel 4, caesium spectrum lamp 5 and combined lens 6,
Atomic absorption room 1 has a spherical housing 1 filled with atomic gas, for by incident light and atomic gas
Interaction generates pump light and transmits outward；Excitation coil 7, excitation coil and caesium optical pumped magnetometer are wound on Atomic absorption room 1
Electronic circuit be connected, for generate optical magnetic resonance measurement external magnetic field.Its principle is the 894nm that is emitted by caesium spectrum lamp mono-
The optical pumping effect measurement external magnetic field of coloured light and atomic gas interaction.
Photocell 2, the tangent setting of spherical housing with Atomic absorption room 1 are penetrated for detecting laser by Atomic absorption room 1
Light out.
Light passing window 3, there are three, it is uniformly wound around on spherical housing 1, each light passing window 3 connects a columnar optical channel
4, optical axis all the way is constituted, the opening of optical channel 4 faces away from the side of the spherical housing of setting photocell 2, and two neighboring light is logical
The angle of the central axis in road 4 is equal, i.e., the angle of adjacent two-way optical axis is equal.
Caesium spectrum lamp 5, there are three, the light-emitting window of each caesium spectrum lamp 5 and the opening in a light passing road 4 are correspondingly arranged, and are passed through
High frequency pumping shines, and the light which issues includes each optic spectrum line of Cs atom, as wavelength is 894nm, 852nm
Optic spectrum line etc..
Combined lens 6, there are three, it is respectively arranged between each caesium spectrum lamp 5 and light passing road 4, combined lens 6 include filtering
Piece, polarizing film and 1/4 slide, for the light of incident caesium spectrum lamp to be become to the monochromatic right-circularly polarized light of 894nm wavelength.
A kind of optional embodiment, combined lens are successively to be bonded by optical filter, polarizing film and 1/4 slide by binder,
Light-emitting window of the optical filter close to the caesium spectrum lamp.It ensure that being incident on the indoor light of Atomic absorption is the required light of detection
Line avoids veiling glare from being mixed into, and improves measurement accuracy.
As an alternative embodiment, as shown in Figures 3 and 4, light passing window 3 can be three, and optical channel 4 is also three
A, the angle of the central axis of optical channel 4 and the diameter perpendicular to photocell 2 is in 30 degree to 60 degree.3 tunnels are constituted in this way to be mutually
The optical axis of angle, so that the dead angle of probe that every road optical axis is constituted mutually is staggered, can guarantee under any circumstance at least one
The optical axis and external magnetic field angle of a probe be not in dead zone, to realize probe working region without dead angle.
As an alternative embodiment, the Atomic absorption room 1, the enclosed construction that light passing window 3 is integral type, light are logical
Road 4 matches with the connecting pin shape of light passing window 3 and the shape of light passing window 3, and existing Atomic absorption room itself is a closing
The structure of light transmission, certainly, atom absorption chamber 1 should also be as being the structure for closing light transmission in the present invention, then in setting light passing
Window 3 and optical channel 4 require consideration for how to guarantee that improved Atomic absorption room is also enclosed construction, in present embodiment, atom
Absorption chamber 1 and light passing window 3 are the enclosed construction of integral type, i.e., only limit the direction of propagation of light by optical channel 4, can be realized
Probe works without dead angle.
Guarantee improved Atomic absorption room be also the optional embodiment of another kind of enclosed construction be light passing window 3 be
The opening of the light hole opened up on Atomic absorption room 1, optical channel 4 is closed by translucent construction, and optical channel 4 and Atomic absorption room
1 is integral type sealing structure.It is also filled with atomic gas in optical channel 4, the direction of propagation of light is limited by optical channel 4, with
Realize working without dead angle for probe.
In the above-described embodiments, the atomic gas is Cs atom gas.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (4)
1. a kind of probe of caesium optical pumped magnetometer characterized by comprising
Atomic absorption room has a spherical housing filled with atomic gas, for by incident light and atomic gas phase interaction
It is transmitted outward with pump light is generated；Excitation coil is wound on the Atomic absorption room；
Photocell, the tangent setting of spherical housing with the Atomic absorption room, for detecting pump light by the Atomic absorption
The light that room is projected；
Light passing window, there are three, it is uniformly wound around on the spherical housing, it is logical that each light passing window connects a columnar light
Road, constitutes optical axis all the way, and the opening direction of the optical channel faces away from the one of the setting photronic spherical housing
The angle of side, two neighboring optical axis is equal；Three light passing windows constitute 3 optical axises, optical axis with perpendicular to described photronic
The angle of diameter is in 30 degree to 60 degree；
Caesium spectrum lamp, light-emitting window and each optical channel of each caesium spectrum lamp identical as the light passing window quantity
Opening is correspondingly arranged, and is shone by high frequency pumping；
Combined lens, it is identical as the light passing window quantity, it is set between each caesium spectrum lamp and the optical channel, described group
Closing eyeglass includes optical filter, polarizing film and 1/4 slide, for the light of the incident caesium spectrum lamp to be become to the list of 894nm
Color right-circularly polarized light；
The light passing window, the enclosed construction that Atomic absorption room is integral type；
Or the light passing window can also be the light hole opened up on the Atomic absorption room, the opening of the optical channel passes through saturating
Photo structure closing, and the optical channel and the Atomic absorption room are integral type sealing structure.
2. the probe of caesium optical pumped magnetometer according to claim 1, which is characterized in that the Atomic absorption room, light passing window
For the enclosed construction of integral type, the optical channel and the connecting pin shape of the light passing window and the shape phase of the light passing window
Match.
3. the probe of caesium optical pumped magnetometer according to claim 1, which is characterized in that the atomic gas is Cs atom gas
Body.
4. the probe of caesium optical pumped magnetometer according to claim 1, which is characterized in that the combined lens are by filtering
Piece, polarizing film and 1/4 slide are successively bonded by binder, light-emitting window of the optical filter close to the caesium spectrum lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611125930.5A CN106772158B (en) | 2016-12-09 | 2016-12-09 | A kind of probe of caesium optical pumped magnetometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611125930.5A CN106772158B (en) | 2016-12-09 | 2016-12-09 | A kind of probe of caesium optical pumped magnetometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106772158A CN106772158A (en) | 2017-05-31 |
| CN106772158B true CN106772158B (en) | 2019-07-12 |
Family
ID=58877664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611125930.5A Active CN106772158B (en) | 2016-12-09 | 2016-12-09 | A kind of probe of caesium optical pumped magnetometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106772158B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462000A1 (en) * | 1990-06-14 | 1991-12-18 | Commissariat A L'energie Atomique | Resonance magnetometer with optical pumping using a plurality of beams |
| EP0575670A1 (en) * | 1991-04-08 | 1993-12-29 | CAE ELECTRONICS Ltd. | Dead-zone free optically pumped Mz magnetometer |
| US5602475A (en) * | 1994-04-04 | 1997-02-11 | Texas Instruments Incorporated | Laser pumped magnetometer |
| CN103823245A (en) * | 2013-12-27 | 2014-05-28 | 杭州瑞声海洋仪器有限公司 | Omnidirectional helium optical pumping magnetic force instrument |
| CN103869373A (en) * | 2012-12-12 | 2014-06-18 | 上海精密计量测试研究所 | Detection method of optical pumping magnetic measuring device |
| CN104181604A (en) * | 2014-09-03 | 2014-12-03 | 上海通用卫星导航有限公司 | Self-excited caesium-133 element optical pumping magnetometer |
| CN104198967A (en) * | 2014-09-28 | 2014-12-10 | 上海通用卫星导航有限公司 | Compact light component device for cesium optical pumping magnetometer |
| CN104698404A (en) * | 2015-03-02 | 2015-06-10 | 北京大学 | Atomic magnetic sensor applied to full-optical optical pump magnetometer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9970999B2 (en) * | 2012-06-06 | 2018-05-15 | Northrop Grumman Systems Corporation | Nuclear magnetic resonance probe system |
| JP6222974B2 (en) * | 2013-04-25 | 2017-11-01 | キヤノン株式会社 | Optical pumping magnetometer and magnetic sensing method |
-
2016
- 2016-12-09 CN CN201611125930.5A patent/CN106772158B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462000A1 (en) * | 1990-06-14 | 1991-12-18 | Commissariat A L'energie Atomique | Resonance magnetometer with optical pumping using a plurality of beams |
| EP0575670A1 (en) * | 1991-04-08 | 1993-12-29 | CAE ELECTRONICS Ltd. | Dead-zone free optically pumped Mz magnetometer |
| US5602475A (en) * | 1994-04-04 | 1997-02-11 | Texas Instruments Incorporated | Laser pumped magnetometer |
| CN103869373A (en) * | 2012-12-12 | 2014-06-18 | 上海精密计量测试研究所 | Detection method of optical pumping magnetic measuring device |
| CN103823245A (en) * | 2013-12-27 | 2014-05-28 | 杭州瑞声海洋仪器有限公司 | Omnidirectional helium optical pumping magnetic force instrument |
| CN104181604A (en) * | 2014-09-03 | 2014-12-03 | 上海通用卫星导航有限公司 | Self-excited caesium-133 element optical pumping magnetometer |
| CN104198967A (en) * | 2014-09-28 | 2014-12-10 | 上海通用卫星导航有限公司 | Compact light component device for cesium optical pumping magnetometer |
| CN104698404A (en) * | 2015-03-02 | 2015-06-10 | 北京大学 | Atomic magnetic sensor applied to full-optical optical pump magnetometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106772158A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103528797B (en) | A kind of new system detected for optical system eyeglass transmitance and reflectance | |
| CN107421469B (en) | A kind of torsion sensor based on inclination less fundamental mode optical fibre grating | |
| CN205861529U (en) | It is applied to the optical system of retro-reflecting coefficient test device | |
| CN105489262B (en) | Universal spot light simulation system | |
| CN104698404A (en) | Atomic magnetic sensor applied to full-optical optical pump magnetometer | |
| CN107014803B (en) | A kind of Raman spectrum detecting device | |
| CN105509926A (en) | Light path coupling device and fluorescence temperature sensing optical system | |
| CN104737000A (en) | Arrangement for an analysis system, analysis system having the arrangement and method for use of the arrangement | |
| CN105973855A (en) | Infrared visible light fluorescence detection system | |
| CN105806468A (en) | Fiber bragg grating vibration sensor and detection device thereof | |
| CN105866090A (en) | Ultraviolet visible light fluorescence detection system | |
| CN106093599A (en) | A kind of optic probe and electromagnetic field measurements equipment and their measuring method | |
| CN106772158B (en) | A kind of probe of caesium optical pumped magnetometer | |
| CN101776787B (en) | Polarization direction continuous collaborative regulating device for micro-Raman spectroscopy | |
| CN103792201A (en) | Light pressure sensor for detecting multi-component gas and detection method thereof | |
| CN109900646A (en) | Optical fiber type bimodal imaging system and optical fiber type bimodal imaging method | |
| JP5429519B2 (en) | Reflective magneto-optical sensor | |
| CN206546219U (en) | Optical fiber temperature-measurement device based on rare earth ion up-conversion fluorescence | |
| CN102902075B (en) | Compact dual-channel atomic filter | |
| CN106482833A (en) | A kind of Wavelength calibration device based on single-stage Lyot type optical filter | |
| CN105873344A (en) | Transverse gradient multi-layer film reflective element based X-ray monoenergetic imaging method | |
| CN208207285U (en) | A kind of integrated coupling module | |
| CN103940512B (en) | A kind of polarization adjusting process for dual detector direct current Zeeman atomic absorption and device | |
| CN107678107A (en) | A kind of integrated coupling module | |
| CN106197325A (en) | Integration visual field fiber spectrometer optical fiber arrangement detecting system and detection method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |