Atomic spin precession detection method and device based on circular polarization detection light

Abstract

The invention discloses an atomic spin precession detection method and device based on circular polarization detection light. The atomic spin precession detection method is based on spinning light characteristics of polarized atoms of an atom air chamber, left circular polarization light and right circular polarization light are formed through double refracted light paths, the left circular polarization light and the right circular polarization light are fed into the atom air chamber, phase position difference in direct proportion to atomic spin precession is generated from left spinning circular polarization light and right spinning circular polarization light of the air chamber, outgoing circular polarization light is fed back along the original path by using a reflection mirror, the left and right spinning directions of the left spinning circular polarization light and the right spinning circular polarization light are switched, the phase position difference is multiplied, the left spinning circular polarization light and the right spinning circular polarization light are interfered according to a circular polarization light interference technique, and thus phase position difference measurement and high-sensitivity detection on atomic spin precession detection are achieved. Atomic spin precession detection can be achieved, and the atomic spin precession detection device is high in precision, sensitivity, and anti-interference capability and small in size. The method and the device are practical, and super high in sensitivity and precision when provided for an atomic spin precession sensor based on atomic spin precession detection.

Description

technical field [0001] The invention relates to an atomic spin precession detection method and device based on circularly polarized detection light, belonging to the field of atomic manipulation and atomic state detection. Background technique [0002] Since the late 1990s, atomic spin devices with atomic spin as the sensitive core have developed rapidly, and have continuously innovated the development of cutting-edge physics research, people's livelihood, military defense and other fields. Spin is an intrinsic property of atoms. For atomic ensembles, atomic spin has angular momentum, which is the vector synthesis of electron spin angular momentum, orbital angular momentum and nuclear spin angular momentum. It has space in inertial space Fixed axis, so it can be equivalent to a high-speed rotor in a rotor gyroscope to achieve inertial measurement; when there is a magnetic field outside, the atomic spin will undergo Larmor precession, and the magnetic field measurement can al...

AI Technical Summary

Problems solved by technology

However, the high requirements on the stability of the light source and the environment limit the further improvement of the system precision, especially on the premise of ensuring the high

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