Partial compensation of thermal noise in the fundamental mode of an optical cavity

TL;DR

This paper introduces a method to partially compensate for thermal noise in the fundamental mode of an optical cavity by using higher order probe modes, potentially improving the stability and accuracy of optical experiments.

Contribution

The paper proposes a novel method of partial thermal noise compensation in optical cavities using higher order modes, supported by mathematical modeling.

Findings

Mathematical modeling confirms the efficiency of the noise compensation method.

The method enables partial reduction of thermal noise in the fundamental mode.

Potential improvements in cavity stability and precision in optical measurements.

Abstract

Thermal noise of optical cavities limits the accuracy of many experiments on precision laser spectroscopy and interferometry. The study of the physical properties of this noise opens opportunities for the creation of more stable cavities, reduction of phase noise of optical radiation, and performance of accurate optical studies. The paper proposes a method of partial recording of TEM00 mode thermal noise of a Fabry-Perot cavity using two "probe" modes of higher order. The method allows partial compensation of noise in the fundamental mode. Mathematical modeling is performed, which confirms the efficiency of the method.