CN203759269U - Combined inertia sensor based on multi-component atom interferometer - Google Patents
Combined inertia sensor based on multi-component atom interferometer Download PDFInfo
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Abstract
The utility model discloses a combined inertia sensor based on a multi-component atom interferometer, which relates to the technical field of atom interference measuring inertia. The sensor comprises a first inertia amount sensitive type cold atom interferometer and a second inertia amount sensitive type cold atom interferometer, which have the same structure, and a vacuum communication chamber. The vacuum communication chamber is communicated with two atom interference zones of the first inertia amount sensitive type cold atom interferometer and the second inertia amount sensitive type cold atom interferometer along the horizontal direction. The combined inertia sensor based on a multi-component atom interferometer is advantageous in that two alkali metal atoms are simultaneously and independently controlled in the same physical unit by means of multi-frequency laser, The acceleration speed and gravity gradient of the atom are measured by adopting a three-pulse Pi/2-Pi-Pi/2 Raman laser sequence; the rotating rate of the other atom is measured by adopting a four-pulse Pi/2-Pi-Pi-Pi/2 Raman laser sequence;<{EN8}>the inertial sensor can play an important role in fields like inertial navigation, resource exploration, earthquake monitoring and physics research. the inertial sensor can play an important role in fields like inertial navigation, resource exploration, earthquake monitoring and physics research.
Description
Technical field
The utility model relates to intervening atom and measures inertial technology field, relates in particular to a kind of combination inertial sensor based on many components atomic interferometer.
Background technology
Acceleration of gravity, gravity gradient and slewing rate are three common inertia physical quantitys, and they are carried out to high-acruracy survey has important application in fields such as metering, mapping, geology, earthquake, national defence and resource explorations.For example by acceleration of gravity and gravity gradient, can inverting obtain quality below earth's surface and the distribution characteristics of density, so gravity survey method is being brought into play very important effect in fields such as resource exploration, geologic structure analysis and geophysical research.In geophysical research, the fluctuating of the earth's rotation rate can provide internal structure and dynamic (dynamical) valuable information of the relevant earth, very sensitive gyroscope can be used in measures the local rotation effect that movement and tidal effect due to earthquake generation, plate cause, and the understanding of earthquake rotation effect is contributed to design special building structure, reduces the fragility of buildings to earthquake.The high-acruracy survey of slewing rate also can be applied to the key areas such as test of navigation and general relativity.
At present, the most representative technical scheme of measurement absolute gravity acceleration has two kinds: macroscopical freely falling body scheme and cold atom are interfered scheme.Wherein macroscopical freely falling body scheme has realized commercialization completely, the FG5 type absolute gravimeter of being produced as U.S. Micro-g Lacoste company; Cold atom interferes scheme to have higher measuring accuracy (can reach 10
-12g).For the measuring method of gravity gradient, also there are in the world the multiple proven technique schemes such as low-temperature superconducting, rotary accelerometer, electrostatic suspension and intervening atom, and started commercialization running.The mature technology scheme of measuring slewing rate has mechanical gyroscope, laser interference gyroscope and fibre optic gyroscope, gyroscope based on intervening atom effect is also in the laboratory prototype design stage at present, but its high measuring accuracy makes them become the most competitive technical scheme of gyroscope of future generation.
Cold atom interference scheme is the moment of inertia precision measurement scheme of tool potentiality.This technical scheme is used the chainless cold atom in vacuum to roll into a ball as measuring media, compare as the scheme of measuring media with traditional macro object that utilizes, this scheme can drop to minimumly by acted on system deviation that measuring media introduces and noise level by measuring media itself and external environment condition, makes thus measuring accuracy generally higher than prior art.Within 1991, Steven Chu group has realized gravimetry with the cooling sodium atom of laser first, has passed through its resolution in 2013 that is optimized to of scheme for several times and has reached 6.7 * 10
12g.1998, the Kasevich group of Stanford Univ USA realized the measurement of vertical gravity gradient first by intervening atom effect, and had reached 4E/Hz in 1998
1/2measurement sensitivity (1E=10
-10g/m).The people such as Gustavson in 1997 have realized the gyroscope based on intervening atom effect first, and have reached 6 * 10 in 2000
10the rotation measuring precision of rad/s.
In traditional inertia measurement scheme, be that a scheme can only be measured one of them inertia physical quantity mostly.But because atomic interferometer can be experienced acceleration, gravity gradient and rotation simultaneously, therefore as long as select suitable measurement scheme just can utilize single one physical device to realize the measurement of a plurality of the moment of inertias.The six axle the moment of inertia sensors of realizing based on intervening atom effect in 2006 such as the people such as B.canel of Paris, FRA astronomical observatory, when using different Raman light configurations can realize acceleration and slewing rate, measure (B.canel et al., PRL 97,010402 (2006)); The new method that the people such as the Susannah M.Dickerson of Stanford Univ USA adopt CCD to take pictures can be measured rotation and the gravity (Susannah M.Dickerson et al., PRL 111,083001 (2013)) of both direction simultaneously.2008, Kasevich group realized the gyrostatic model machine based on intervening atom effect of miniaturization, and the angular velocity of measuring earth rotation is Ω/Ω
e=1.0007 ± 0.0005, also with it, measured the gravity (1.6 * 10 of horizontal direction
7g/Hz
1/2) and gravity gradient value (270E/m) (Ken Takase, Precision rotation rate measurements with a mobile atom interferometer, PHD Thesis, Stanford University (2008)).
The cooperative of gravity gradient and other inertia physical quantity has very important significance in inertial navigation field, because inertial navigation device cannot separate the variation zone of the variation of gravity and acceleration, so the cumulative meeting of Gravity changer carrys out deviation to positioning belt, and by can obtaining the variation of gravity to the integration of gravity gradient and deducting corresponding deviations, thereby increase substantially the precision of location.In above-mentioned various schemes, Jin You Kasevich group has realized rotation and the gradiometry based on same set of measurement mechanism, but due to the phase mutual interference of measurement scheme, when making this scheme to realize multiple physical quantity, measures.And the scheme that timesharing is measured will extend the time of measuring on the one hand, sampling rate is reduced greatly; On the other hand, influencing each other between each physical quantity of rejecting that cannot be real-time, cannot further improve the precision of measuring.
Summary of the invention
The purpose of this utility model is just to overcome the shortcoming and defect that prior art exists, a kind of combination inertial sensor based on many components atomic interferometer is provided, solve the insurmountable gravity gradient that comprises of prior art in the interior simultaneously-measured problem of a plurality of the moment of inertias, when improving measuring accuracy, reduce cost, complicacy and the space hold of measuring system, reach small integrated and the through engineering approaches of physical system.
The purpose of this utility model is achieved in that
For acceleration of gravity, gravity gradient and rotation are carried out to synchronous real-time measurement, mainly based on two component atom synchronous operation technology and previously described inertia measurement technology based on atomic interferometer, [people such as French A.Bonnin once utilized two component atom synchronous operation technology in same atomic interferometer, to handle object (the Phys. Rev.A that diatomic component (Rb-85 and Rb-87) reaches common mode inhibition vibration noise simultaneously
88, 043615,2013), but they are not applied to this technology the synchro measure field of a plurality of inertia physical quantitys].
Specifically:
One, the combination inertial sensor based on many components atomic interferometer (abbreviation sensor)
This sensor comprises the 1st, 2 the moment of inertia responsive type cold atom interferometer and the vacuum communicating chambeies that structure is identical;
The 1st described the moment of inertia responsive type cold atom interferometer comprise vacuum tank, Three-Dimensional Magnetic ligh trap reversed magnetic field coil to, bias magnetic field coil to, alkaline metal sample and photodetector and the 1st, 3,4 laser beam transmitters;
Its position and annexation are:
Vacuum tank is a kind of full hermetic container, comprises Three-Dimensional Magnetic ligh trap vacuum chamber and intervening atom district vacuum chamber;
Alkaline metal sample is arranged in vacuum tank;
Centered by the central point of Three-Dimensional Magnetic ligh trap vacuum chamber, six direction along space symmetr is respectively arranged with the 1st laser beam transmitter that three pairs of transmit directions all point to this center, a pair of the 1st laser beam transmitter of vertical direction of simultaneously take is axle, be provided with symmetrically Three-Dimensional Magnetic ligh trap reversed magnetic field coil pair, form Three-Dimensional Magnetic ligh trap;
Above Three-Dimensional Magnetic ligh trap, the intervening atom district vacuum chamber of take is axle, is provided with bias magnetic field coil pair, and photodetector is arranged at the bottom of intervening atom district vacuum chamber, constituting atom interference region;
It is characterized in that:
Vacuum communicating chamber is communicated with the Liang Ge intervening atom district of the 1st, 2 the moment of inertia responsive type cold atom interferometers in the horizontal direction, and horizontal direction two ends, Bing Liangge intervening atom district are respectively arranged with the 3rd, 4 laser beam transmitters of two pairs of correlation;
In alkaline metal sample, include 2～4 kinds of alkali metal atoms or isotope;
1st, 3,4 laser beam transmitters are a kind of multifrequency Laser emission terminal, can launch respectively the multi-frequency laser beam for above-mentioned alkali metal atom or isotope energy level transition.
Two, the measuring method of the combination inertial sensor based on many components atomic interferometer (abbreviation measuring method)
This measuring method is utilized multifrequency laser two kinds of alkali metal atoms of while independent manipulation in Same Physical unit, to a kind of atom, adopts three pulse pi/2-π-pi/2 raman laser sequences to come acceleration measurement and gravity gradient; To another kind of atom, adopt four pulse pi/2-π-π-pi/2 Raman light laser sequences to measure slewing rate;
Include two processes of data acquisition and data processing:
The first, data acquisition:
1. the cold atom interferometer of the 1st, 2 the moment of inertia sensitivities is vertically with different two cold atom groups of containing two components of component speed transmitting, adjust the not initial velocity of homoatomic component, make the 1st, 2,3,4 cold atom groups of different component atomic groups 4 one-components of separated formation in space, and the peak that the 2nd, 4 synchronous atomic groups of the atom component two that makes sensing gravity rise is just covered by the 2nd raman laser light beam, and the synchronous atomic group peak of another atom component two is higher than the 2nd raman laser light beam, be used for sensing slewing rate;
2. utilize laser or microwave method for pumping or Raman Coherent Population Trapping count transfer method by the atom transfer in each atomic group or screen on the magnetic sublevel of magnetic quantum number mF=0 of some ground state levels;
3. with the 1st, 2 raman laser light beams, the 2nd, 4 cold atom groups are carried out to three pulse pi/2-π-pi/2 Raman light sequence interference operations, and the 1st, 3 atomic groups are carried out to four pulse pi/2-π-π-pi/2 Raman light sequence interference operations;
4. survey successively and record 4 the 1st, 2,3,4 cold atom group Atoms at the distribution probability of each ground state, obtain corresponding 4 raw data points: p1, p2, p3, p4;
5. change for n time the phase place of (scanning) raman laser repeating step 1.～4., obtain 4 groups of raw data points (every group of n point), p11, p12, p13 ... p1n}, p21, and p22, p23 ... p2n}, { p31, p32, p33 ... p3n}, and p41, p42, p43 ... p4n};
The second, data processing:
1. n raw data points is converted to 41 dimension groups that contain n element, that is: P1={p11, p12, p13 ... p1n}, P2={p21, p22, p23 ... p2n}, P3={p21, p22, p23 ... p2n}, P4={p41, p42, p43 ... p4n}; In array P2, P4, stored respectively in measuring for n time, record two synchronous the 2nd, 4 cold atoms group Atoms ground state upper state or lower can probability of state; In P1, P3, stored respectively in measuring for n time, record two synchronous the 1st, 3 cold atoms group Atoms ground state upper state or lower can probability of state;
2. data fitting is processed.
To array P1 and P3, adopt respectively Sine-Fitting can obtain two phase differential
φ1 He
φ3, according to the relation of phase differential and slewing rate, obtain the value of two slewing rates of the 1st, 2 the moment of inertia responsive type cold atom interferometer measurements, two slewing rates are averaged to offset part systematic error and obtain final slewing rate measured value;
To array P2 and P4, adopt respectively Sine-Fitting can obtain two phase differential
φ2 Hes
φ4, according to phase differential
φwith the relation of acceleration a, can obtain the value of two acceleration of the 1st, 2 the moment of inertia responsive type cold atom interferometer measurements, two accekerations are averaged to offset part systematic error and obtain final acceleration measurement;
To array P2 and P4, directly adopt ellipse fitting to obtain gravity gradient value, ellipse fitting can well common mode inhibition phase noise, improves the sensitivity of gradiometry.
The utlity model has following advantages and good effect:
utilize single one physical device to realize the synchro measure of a plurality of the moment of inertias (acceleration, gravity gradient and rotation) simultaneously, both can realize a tractor serves several purposes, improve the integrated level of inertial sensor, can realize again the synchronous correction (as the time integral by gravity gradient is rejected the variation of gravity from the measured value of acceleration) mutually between each the moment of inertia, improve the accuracy of measuring, for inertial navigation field, have very important significance.
2. the variation of the geologic structure that extremely corresponds respectively to deep layer and shallow table of acceleration of gravity and gravity gradient, therefore this sensor can be taken into account the sensitivity to deep layer and shallow surface geology structural survey, so except can be applicable to inertial navigation field, all can play a significant role in a plurality of fields such as resource exploration, seismic monitoring, geophysical research.
3. because atomic interferometer all has response to a plurality of physical quantitys, therefore this sensor and measuring method can also realize more rich and varied function through simple transformation, for example retain one of them cold atom interferometer and carry out acceleration and rotation measuring, recycling another one cold atom interferometer comes the magnetic field of measurement environment, to increase the function of geomagnetic matching navigation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the combination inertial sensor based on many components atomic interferometer;
Fig. 2 is the structural representation of vacuum tank.
In figure:
A-1st the moment of inertia responsive type cold atom interferometer;
B-2nd the moment of inertia responsive type cold atom interferometer;
C-vacuum connection chamber;
1-two-dimentional Magneto-Optical Trap;
2-Three-Dimensional Magnetic ligh trap;
3-intervening atom district;
11-vacuum tank,
111-two-dimentional Magneto-Optical Trap vacuum chamber,
112-Three-Dimensional Magnetic ligh trap vacuum chamber,
113-intervening atom district vacuum chamber;
21-Three-Dimensional Magnetic ligh trap reversed magnetic field coil pair;
22-two-dimentional Magneto-Optical Trap reversed magnetic field coil pair;
30-bias magnetic field coil pair;
40-alkaline metal sample;
50-photodetector;
The 61-the 1 laser beam transmitter;
The 62-the 2 laser beam transmitter;
The 63-the 3 laser beam transmitter;
The 64-the 4 laser beam transmitter;
A1-Three-Dimensional Magnetic ligh trap imprison laser beam;
A2-two-dimentional Magneto-Optical Trap imprison laser beam;
A3-1st raman laser light beam;
A4-2nd raman laser light beam;
B-two-dimentional cold atomic beam;
C-cold atom group;
C1-1st cold atom group;
C2-2nd cold atom group;
C3-3rd cold atom group;
C4-4th cold atom group.
Embodiment
Below in conjunction with drawings and Examples, sensor is described in detail:
1, overall
As Fig. 1, this sensor comprises the 1st, 2 the moment of inertia responsive type cold atom interferometer A, B and the vacuum communicating chamber C that structure is identical;
The 1st described the moment of inertia responsive type cold atom interferometer A comprise vacuum tank 11, Three-Dimensional Magnetic ligh trap reversed magnetic field coil to 21, bias magnetic field coil to 30, alkaline metal sample 40 and photodetector 50 and the 1st, 3,4 laser beam transmitters 61,63,64;
As Fig. 2, vacuum tank 11 is a kind of full hermetic containers, comprises Three-Dimensional Magnetic ligh trap vacuum chamber 112He intervening atom district vacuum chamber 113;
Its position and annexation are:
Alkaline metal sample 40 is arranged in vacuum tank 11;
Centered by the central point of Three-Dimensional Magnetic ligh trap vacuum chamber 112, six direction along space symmetr is respectively arranged with the 1st laser beam transmitter 61 that three pairs of transmit directions all point to this center, a pair of the 1st laser beam transmitter 61 of vertical direction of simultaneously take is axle, be provided with symmetrically Three-Dimensional Magnetic ligh trap reversed magnetic field coil to 21, form Three-Dimensional Magnetic ligh trap 2;
Above Three-Dimensional Magnetic ligh trap 2, the intervening atom district vacuum chamber 113 of take is axle, is provided with bias magnetic field coil to 30, and photodetector 50 is arranged at the bottom of intervening atom district vacuum chamber 113, constituting atom interference region 3;
It is characterized in that:
Vacuum communicating chamber C is communicated with the Liang Ge intervening atom district 3 of the 1st, 2 the moment of inertia responsive type cold atom interferometer A, B in the horizontal direction, and 3 horizontal direction two ends, Bing Liangge intervening atom district are respectively arranged with the 3rd, 4 laser beam transmitters 63,64 of two pairs of correlation;
In alkaline metal sample 40, include 2～4 kinds of alkali metal atoms or isotope;
1st, 3,4 laser beam transmitters 61,63,64 are a kind of multifrequency Laser emission terminal, can launch respectively the multi-frequency laser beam for above-mentioned alkali metal atom or isotope energy level transition.
* described vacuum tank is a kind ofly to adopt full glass material or include the full hermetic container that the titanium metal material of glass window is made.
* in a side of Three-Dimensional Magnetic ligh trap vacuum chamber 112, be provided with two-dimentional Magneto-Optical Trap vacuum chamber 111, two pairs of correlation and orthogonal the 2nd laser beam transmitter 62 are set in the direction perpendicular to two-dimentional Magneto-Optical Trap vacuum chamber 111, the 2nd wherein a pair of laser beam transmitter 62 of take is axle, be provided with symmetrically the anti-phase field coil of two-dimentional Magneto-Optical Trap to 22, form two-dimentional Magneto-Optical Trap 1.
* the 1,2,3,4 laser beam transmitters 61,62,63,64 or pairing use and every a pair of be all correlation structure, or another of centering combination by quarter wave plate and catoptron replaces.
2, functional part
1) vacuum tank 11
Aforementioned, as Fig. 2, vacuum tank 11 is a kind of full hermetic containers, comprises two-dimentional Magneto-Optical Trap vacuum chamber 111, Three-Dimensional Magnetic ligh trap vacuum chamber 112He intervening atom district vacuum chamber 113;
Vacuum tank 11 is connected with vacuum pump, guarantees that vacuum tightness is better than 10
-6pa.
The titanium metal material that vacuum tank adopts full glass material or includes glass window is made.
2) Three-Dimensional Magnetic ligh trap reversed magnetic field coil to 21, two-dimentional Magneto-Optical Trap reversed magnetic field coil is to 22
Be a kind of general coil, by plain conductor coiling, formed.
3) bias magnetic field coil is to 30
Bias magnetic field coil is a kind of general coils to 30, by plain conductor coiling, is formed.
4) the 1st, 2,3,4 laser beam transmitters 61,62,63,64
1st, 2,3,4 laser beam transmitters the 61,62,63, the 64th, a kind of multifrequency Laser emission terminal, can launch respectively the multi-frequency laser beam for alkali metal atom or isotope energy level transition, by laser instrument (such as semiconductor laser), optical adjustment system (such as lens, prism, acousto-optic, electrooptic modulator etc.), propagate that device (such as optical fiber etc.) forms, end is fiber collimating lenses group or mirror system.
5) alkaline metal sample 40
Alkaline metal sample 40 is any 2～4 kinds in the alkali metals such as lithium, sodium, potassium, rubidium and caesium or in isotope.
6) photodetector 50
Photodetector 50 is surveying instruments of a kind of general fluorescence signal, comprises semiconductor photo diode or photomultiplier and fill-in light thereof, circuit.
3, the feature of this sensor and effect thereof:
1. this sensor is comprised of the 1st, the 2nd the moment of inertia responsive type cold atom interferometer A, B and vacuum communicating chamber C, and the vacuum communicating by C Jiang Liangge intervening atom district, vacuum communicating chamber 3 is integrated in the horizontal direction; In alkaline metal sample 40, include 2～4 kinds of alkali metal atoms or isotope, simultaneously the 1st, 2,3,4 laser beam transmitters 61,62,63,64 are a kind of multifrequency Laser emission terminal, can launch respectively the multi-frequency laser beam for alkali metal atom or isotope energy level transition.
Its effect is:
Two intervening atom loops can be operated by same group of raman laser impulsive synchronization, the and the 1st, 2 raman laser light beam a3, a4 can unhinderedly act on two synchronous one-components the 1st successively, 3 c1 of cold atom group, c3 or the 2nd, 4 c2 of cold atom group, c4, the raman laser parameter of having avoided the structural deviation of glass window and air turbulence to cause acting on mutually with four cold atoms inconsistent, this just makes from the noise of external environment condition and the noise of sensor internal (being mainly the noise from raman laser parameter) is synchronous on the impact of two groups of interference fringes, and common mode is eliminated completely.
2. the side at Three-Dimensional Magnetic ligh trap 2 is provided with two-dimentional Magneto-Optical Trap 1
Two dimension Magneto-Optical Trap 1 can produce central shaft by the two-dimentional cold atomic beam b at Three-Dimensional Magnetic ligh trap 2 centers, greatly improves the speed that Three-Dimensional Magnetic ligh trap 2 is arrested atom; Can make a Three-Dimensional Magnetic ligh trap 2 can prepare in a short period of time many components atomic group of (arresting) enough atom numbers, can improve the data rate of measurement.
3. all-glass construction made or adopted by vacuum tank 11 by titanium metal material
Its effect is:
What make whole sensor is significantly better than traditional stainless steel material without magnetic characteristic, can avoid whole container to carry non-uniform magnetic-field the Zeeman splitting of atomic energy level is risen and fallen, thereby cause the cumulative of laser phase deviation; Make the sampling rate index of whole sensor be better than conventional aluminum alloy material simultaneously, because the resistance of titanium material is much larger than aluminum, therefore can reduce the time that the inductive loop that produces in magnetic field switching process exists, improve the speed of measuring.
4. the 1st, 2,3,4 laser beam transmitters 61,62,63,64 be all pairing use and every a pair of be all correlation structure, so an of centering can replace with the combination of catoptron and quarter wave plate.
Its effect is:
Part laser beam can be obtained by direct reflection and its laser beam of propagating in opposite directions, on the one hand can be so that the optical system of whole sensor becomes succinct; On the other hand for the 1st, 2 raman laser light beam a3, a4, use catoptron can be so that two pairs of raman laser light beams overlap in the middle of most travel paths as the core component of one of them the 3rd, 4 laser beam transmitter 63,64, and common mode inhibition is fallen by travel path to be introduced the noise in raman laser so dramatically.
Claims (4)
1. the combination inertial sensor based on many components atomic interferometer, comprises the 1st, 2 the moment of inertia responsive type cold atom interferometer (A, B) and vacuum communicating chamber (C) that structure is identical;
The 1st described the moment of inertia responsive type cold atom interferometer (A) comprise vacuum tank (11), Three-Dimensional Magnetic ligh trap reversed magnetic field coil to (21), bias magnetic field coil to (30), alkaline metal sample (40) and photodetector (50) and the 1st, 3,4 laser beam transmitters (61,63,64);
Its position and annexation are:
Vacuum tank (11) is a kind of full hermetic container, comprises Three-Dimensional Magnetic ligh trap vacuum chamber (112) and intervening atom district vacuum chamber (113);
Alkaline metal sample (40) is arranged in vacuum tank (11);
Centered by the central point of Three-Dimensional Magnetic ligh trap vacuum chamber (112), six direction along space symmetr is respectively arranged with the 1st laser beam transmitter (61) that three pairs of transmit directions all point to this center, a pair of the 1st laser beam transmitter (61) of vertical direction of simultaneously take is axle, be provided with symmetrically Three-Dimensional Magnetic ligh trap reversed magnetic field coil to (21), form Three-Dimensional Magnetic ligh trap (2);
Top in Three-Dimensional Magnetic ligh trap (2), the intervening atom district vacuum chamber (113) of take is axle, is provided with bias magnetic field coil to (30), photodetector (50) is arranged at the bottom of intervening atom district vacuum chamber (113), constituting atom interference region (3);
It is characterized in that:
Vacuum communicating chamber (C) is communicated with the Liang Ge intervening atom district (3) of the 1st, 2 the moment of inertia responsive type cold atom interferometers (A, B) in the horizontal direction, and horizontal direction two ends, Bing Liangge intervening atom district (3) are respectively arranged with the 3rd, the 4 laser beam transmitters (63,64) of two pairs of correlation;
In alkaline metal sample (40), include 2～4 kinds of alkali metal atoms or isotope;
1st, 3,4 laser beam transmitters (61,63,64) are a kind of multifrequency Laser emission terminal, can launch respectively the multi-frequency laser beam for above-mentioned alkali metal atom or isotope energy level transition.
2. by a kind of combination inertial sensor based on many components atomic interferometer claimed in claim 1, it is characterized in that:
Described vacuum tank is a kind ofly to adopt full glass material or include the full hermetic container that the titanium metal material of glass window is made.
3. by a kind of combination inertial sensor based on many components atomic interferometer claimed in claim 1, it is characterized in that:
A side at Three-Dimensional Magnetic ligh trap vacuum chamber (112), be provided with two-dimentional Magneto-Optical Trap vacuum chamber (111), two pairs of correlation and orthogonal the 2nd laser beam transmitter (62) are set in the direction perpendicular to two-dimentional Magneto-Optical Trap vacuum chamber (111), the 2nd wherein a pair of laser beam transmitter (62) of take is axle, be provided with symmetrically the anti-phase field coil of two-dimentional Magneto-Optical Trap to (22), form two-dimentional Magneto-Optical Trap (1).
4. by a kind of combination inertial sensor based on many components atomic interferometer claimed in claim 1, it is characterized in that:
1st, 2,3,4 laser beam transmitters (61,62,63,64) or pairing use and every a pair of be all correlation structure, or another of centering combination by quarter wave plate and catoptron replaces.
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| CN103837904A (en) * | 2014-03-20 | 2014-06-04 | 中国科学院武汉物理与数学研究所 | Combination inertial sensor based on multi-component atom interferometer and measurement method of combination inertial sensor |
| CN105066991A (en) * | 2015-08-07 | 2015-11-18 | 中国船舶重工集团公司第七一七研究所 | Cold atom interferometry principle-based inertia measuring device |
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| CN103837904B (en) * | 2014-03-20 | 2016-04-20 | 中国科学院武汉物理与数学研究所 | Based on combination inertial sensor and the measuring method thereof of many constituent atoms interferometer |
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| CN105674972A (en) * | 2014-11-17 | 2016-06-15 | 中国航空工业第六八研究所 | Miniature combined uniaxial cold atom inertial sensor and measuring method thereof |
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| CN105066991A (en) * | 2015-08-07 | 2015-11-18 | 中国船舶重工集团公司第七一七研究所 | Cold atom interferometry principle-based inertia measuring device |
| CN105066991B (en) * | 2015-08-07 | 2017-08-25 | 中国船舶重工集团公司第七一七研究所 | Inertia measurement equipment based on cold atom principle of interference |
| CN110686663A (en) * | 2019-10-25 | 2020-01-14 | 华中科技大学 | Two-degree-of-freedom atomic interference gyroscope |
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| CN111781654A (en) * | 2020-08-21 | 2020-10-16 | 中国科学院精密测量科学与技术创新研究院 | Multi-component cold atom gravity gradient measurement system and method |
| CN112881752A (en) * | 2021-01-08 | 2021-06-01 | 中国船舶重工集团公司第七0七研究所 | Biaxial acceleration sensing device and method based on atomic interference effect |
| CN112881752B (en) * | 2021-01-08 | 2022-09-16 | 中国船舶重工集团公司第七0七研究所 | Biaxial acceleration sensing device and method based on atomic interference effect |
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