Thermally stable optical cavities for Zeeman laser gyroscopes

The problem of increasing the working time of a Zeeman laser gyroscope (LG) without any discontinuities in the output data is considered. It is proposed to solve it using materials with very small linear temperature expansion coefficients in the LG design and apply piezoelectric correctors with passive temperature compensation. Numerous experimental studies of the perimeter drift have been performed for different Zeeman LG samples. The linear temperature expansion coefficients of the material of LG single blocks have been carried out, and the piezoelectric corrector design has been improved.