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Integrated optical system for atom interferometers

An optical system and interferometer technology, applied in the direction of optical devices, instruments, measuring devices, etc., can solve the problems of decreased measurement sensitivity, prolonged measurement time, and reduced cold atom preparation speed, so as to improve thermal stability and reduce Effect of temperature and temperature gradient

Pending Publication Date: 2018-09-28
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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Problems solved by technology

It can be seen that in the interference area of ​​the same size, the measurement sensitivity of the release-type atom interferometer is only 1 / 4 of that of the fountain-type atom interferometer
The removal of the two-dimensional pre-cooling device doubles the preparation speed of cold atoms, prolongs the measurement time, and also leads to a decrease in measurement sensitivity (the measurement sensitivity is inversely proportional to the square root of the total measurement time)
Therefore, the above simplified scheme is at the expense of the measurement sensitivity of the atomic interferometer, and it is difficult to meet the needs of high-sensitivity measurement

Method used

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  • Integrated optical system for atom interferometers
  • Integrated optical system for atom interferometers
  • Integrated optical system for atom interferometers

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Embodiment Construction

[0047] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0048] 1. Overall

[0049] Such as figure 1 , the system includes a main frame 10 and a laser generating component 20 arranged on the main frame 10, a modulation beam splitting component 30, a frequency stabilization component 40, and a fiber coupler component 50;

[0050] The laser generating component 20, the modulation beam splitting component 30 and the fiber coupler component 50 interact sequentially. Part of the outgoing laser light of the laser generating component 20 is divided into several beams by the modulation beam splitting component 30, and the frequency and intensity of each beam are modulated and controlled. Various lasers are coupled into the optical fiber through the fiber coupler assembly 50 and output, and finally all the lasers required by the atomic interferometer are obtained;

[0051] The laser generating component 20 and the frequency stabilizing component 40 int...

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Abstract

The invention discloses an integrated optical system for atom interferometers, and belongs to the technical field of precision measurement based on the atom interferometers. The system comprises a main body frame (10), a laser generation component (20), a modulating and beam splitting component (30), a frequency stabilizing component (40) and an optical fiber coupler component (50). The laser generation component (20), the modulating and beam splitting component (30), the frequency stabilizing component (40) and the optical fiber coupler component (50) are arranged on the main body frame (10).The laser generation component (20), the modulating and beam splitting component (30) and the optical fiber coupler component (50) interact with one another sequentially. The laser generation component (20) and the frequency stabilizing component (40) are in closed-loop interaction. The integrated optical system has the advantages that conflicts between functional needs and integration and between the functional needs and stability in existing atom interferometers are solved, and the problem of lack of measures to remotely adjust the light intensity proportion of double-frequency components,which form Raman light, in existing atom interferometer optical systems is also solved.

Description

technical field [0001] The invention belongs to the technical field of precision measurement based on atomic interferometer, and in particular relates to an integrated laser system for atomic interferometer. Background technique [0002] The atomic interferometer technology developed based on laser cooling and trapping neutral atom technology has been applied in the field of precision measurement of inertial physical quantities such as gravity, gravity gradient, and rotation. Briefly, the atom interferometer uses a pair of lasers with a frequency difference equal to the ultra-fine splitting of the two lower energy levels of the atom (or a beam of dual-frequency lasers, called Raman light in the field of atomic physics) to be cooled by the laser. Atoms (with extremely weak thermal motion) perform beam splitting, reflection, and beam combining operations, and write the space-dependent laser phase into the state superposition phase of the atom, and finally obtain the motion sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B9/02
CPCG01B9/02007
Inventor 张小伟仲嘉琪汤彪陈曦朱磊王谨詹明生
Owner WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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