Sensing of laser cooling with optical fibres

Abstract

The calibration of a novel scheme for direct contact and in-situ measurement of temperature in laser-induced cooling of solids is presented. The scheme demonstrates the advantages of fibre Bragg grating (FBG) sensors for measurements in typical laser cooling experiments, over traditional methods. In this paper these advantages are discussed and quantified. The paper presents the interrogation method utilized and the experimental results obtained with the setup.