Integrated optical system for cold atom interferometer

An optical system and interferometer technology, applied in the field of integrated optical systems, can solve problems such as mechanical pressure and vibration sensitivity, and reduce the stability of optical systems

Active Publication Date: 2017-11-07
中科酷原科技(武汉)有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

③At present, the existing optical system partially uses the free space optical path, which makes the optical system very sensitive to temperature fluctuations, mechanical pressure and vibration, etc., thus reducing the stability of the optical system

Method used

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  • Integrated optical system for cold atom interferometer
  • Integrated optical system for cold atom interferometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0101] This system can be 87 Rb atomic interferometer provides laser.

[0102] The specific system plan is:

[0103] ①The LS laser in the laser unit 10 is a DBR laser with an operating wavelength of 780nm; ②The beam splitting device of the beam splitting unit 20 is a polarization beam splitting prism with a light splitting ratio of 95 / 5; ③In the first and second waveguide type electro-optic modulator units 40, 50 The modulator is an optical fiber amplitude modulator, and the alkali metal gas bubble in the frequency stabilization unit 30 is 85 Rb elementary bubbles, the detector is a Hamamatsu high-speed detector; ⑤The laser power amplifier unit 60 uses a semiconductor cone laser amplifier; ⑥The switching device in the power control unit 70 is an acousto-optic modulator Gooch&Housego 3080-125 model.

[0104] work process:

[0105] The emitted laser light of the laser unit 10 is divided into two beams after passing through the beam splitting unit 20, and the optical power ratio of the t...

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Abstract

The invention discloses an integrated optical system for a cold atom interferometer, and belongs to the field of cold atom interferometry precise measurement. According to the structure of the integrated optical system, a laser device unit (10) generates single-frequency lasers which are split into two laser beams through a beam splitting unit (20), one output laser beam sequentially passes through a first waveguide type electrooptical modulator unit (40) and a frequency stabilizing unit (30) to obtain an electrical feedback signal, and the other output laser beam sequentially passes through a second waveguide type electrooptical modulator unit (50), a laser power amplifying unit (60) and a power control unit (70) and is then transmitted to a physical system of the atom interferometer. According to the system, full-optical-fiber modularization design can be used, the optical system is not sensitive to temperature fluctuation, mechanical pressure, vibration and the like, and then the stability of the system is improved.

Description

Technical field [0001] The invention belongs to the field of cold atom interference precision measurement, and particularly relates to an integrated optical system for a cold atom interferometer. Background technique [0002] The atomic interferometer is a high-precision measuring instrument. Gravimeters and gravity gradiometers based on atomic interferometers can accurately measure gravity and gravity gradients. The gravity on the surface of the earth is mainly determined by the gravitational force generated by the material inside the earth, and the distribution information of the material inside the earth can be obtained through gravity or gravity gradient measurement. The atomic interferometer can also perform rotation measurement, and the gyroscope based on the atomic interferometer can be used for inertial navigation. The atomic interferometer can also be used for weak equivalence principle test and gravitational wave detection. In recent years, many scientists at home an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B9/02
CPCG01B9/02015Y02A90/10
Inventor 方杰陈曦胡建功周林仲嘉琪王谨詹明生
Owner 中科酷原科技(武汉)有限公司
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