Reflection-type single-beam biaxial atomic spin gyroscope

A reflection-type single-beam biaxial atomic spin gyroscope is characterized in that a beam of elliptically polarized light enters an atomic gas chamber, alkali metal atoms and inert gas nucleons are pumped to reach a polarization state, and meanwhile, a rotary modulation magnetic field is applied in a direction perpendicular to the pumping direction, so that an electron polarization vector in the pumping direction generates a modulation effect; pumping light emitted out of the atomic gas chamber is reflected by the reflector, penetrates through the atomic gas chamber again and finally enters the balance difference module, rotation signals are extracted through the lock-in amplifier signal acquisition module, and biaxial inertial signal decoupling is achieved by adjusting phase shift of reference signals. The method is beneficial to development of miniaturized SERF atomic spinning gyroscopes, enhancement of rotation angle signals, improvement of signal-to-noise ratio and system sensitivity and improvement of