Pumping laser and atomic gas chamber integrated nuclear magnetic resonance gyroscope

A technology of nuclear magnetic resonance gyroscope and atomic gas chamber, which is applied to gas laser parts, lasers, laser parts and other directions to achieve the effects of good laser frequency stability, good beam quality and stable beam direction

Inactive Publication Date: 2020-12-01
NAT UNIV OF DEFENSE TECH
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  • Pumping laser and atomic gas chamber integrated nuclear magnetic resonance gyroscope
  • Pumping laser and atomic gas chamber integrated nuclear magnetic resonance gyroscope
  • Pumping laser and atomic gas chamber integrated nuclear magnetic resonance gyroscope

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Embodiment Construction

[0016] The specific embodiment is described in detail below in conjunction with accompanying drawing:

[0017] Gain chamber: filled with alkali metal ( 21 Na, 39 K. 85 Rb, 87 Rb, 133 One or more of Cs) vapor and buffer gas (one or more of methane, helium, etc.); combined with the resonant cavity and the pump laser to generate an alkali metal laser corresponding to the wavelength of the alkali metal D1 line, such as 85 Rb and 87 Rb corresponds to a wavelength of 795nm, 133 Cs corresponds to 854nm wavelength;

[0018] Sensing chamber: filled with at least one kind of alkali metal corresponding to the gain chamber, and its D2 line should match and resonate with the alkali metal laser wavelength. If the alkali metal laser has a wavelength of 795nm, then the sensing chamber must be filled with at least 85 Rb and 87 One or both of Rb, but does not exclude the addition of other alkali metal vapors;

[0019] When the sensing chamber is only filled with alkali metal, a magnet...

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Abstract

The invention relates to a pumping laser and atomic gas chamber integrated nuclear magnetic resonance gyroscope. A glass gas chamber containing gaseous spinning is arranged in an alkali metal laser resonant cavity to form a part of a laser, spin polarization is realized, and the glass gas chamber is used as a basic device for the nuclear magnetic resonance gyroscope. A crystal polarizer is arranged in the cavity, so that the laser passing through the sensing chamber is in a circular polarization state, and the alkali metal atoms in the sensing chamber can generate spin polarization. By addinga stable control structure of laser frequency and power, the frequency and power parameters of emitted laser are stable. The alkali metal gain medium and the spin sensing atomic gas chamber are integrated together, the polarization device with stable parameter control is provided,and the pumping laser and atomic gas chamber integrated nuclear magnetic resonance gyroscope has the advantages of simple structure, good compactness, good stability, low cost and the like, and has a good application prospect in atom sensing devices such as nuclear magnetic resonance gyroscopes and the like.

Description

technical field [0001] The invention relates to high-sensitivity measurement based on the angular velocity of atomic spin and even the interaction between spin and other physical fields (such as magnetic field), and belongs to the field of atomic sensing. Background technique [0002] The use of atomic spins (such as alkali metal electron spins, inert gas nuclear spins) can achieve precise measurement of physical quantities such as angular velocity, such as nuclear magnetic resonance gyroscopes based on atomic spins, which have the advantages of small size and high precision. In the field of inertial technology It has great application potential. [0003] In devices that use atomic spins for measurement, a glass chamber is generally used to seal a certain amount of alkali metal gas, and sometimes it is necessary to seal buffer gases such as helium, quenching gases such as nitrogen, and inert gases that provide nuclear spins. In order to polarize atomic spins, spin-exchange ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/62H01S3/03H01S3/227
CPCG01C19/62H01S3/031H01S3/227
Inventor 汪之国罗晖赵洪常王珊珊展翔
Owner NAT UNIV OF DEFENSE TECH
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