US Patent No. 10,921,191

ATOMIC SENSING METHOD AND CHIP-SCALE ATOMIC SENSOR


Patent No. 10,921,191
Issue Date February 16, 2021
Title Atomic Sensing Method And Chip-scale Atomic Sensor
Inventorship Yi Zhang, Wuhan (CN)
Sihong Gu, Wuhan (CN)
Yuan Tian, Wuhan (CN)
Jiehua Chen, Wuhan (CN)
Assignee WUHAN INSTITUTE OF PHYSICS AND MATHEMATICS, CHINESE ACADEMY OF SCIENCE, Wu...

Claim of US Patent No. 10,921,191

1. A method, comprising:1) providing a polarization converter;
2) emitting a linearly polarized polychromatic laser beam to the polarization converter;
3) converting, by the polarization converter, the linearly polarized polychromatic laser beam into a circularly-polarized laser beam and a linearly-polarized laser beam;
4) combining the circularly-polarized laser beam and the linearly-polarized laser beam thereby yielding a multi-polarization polychromatic laser beam;
5) transmitting the multi-polarization polychromatic laser beam to an atomic vapor cell comprising alkali metal atoms;
6) polarizing the multi-polarization polychromatic laser beam into two laser beams; and
7) detecting the two laser beams by two photodetectors, respectively.