THERMOELASTIC IMAGING USING OPTICAL INTERFEROMETER - SENSITIVITY OPTIMIZATION AND SUPERRESOLUTION

The noncontacting thermoelastic microscope is based on Ar+ laser excit ation and optical probe detection. The main problem is to adjust the e xperimental parameters for sensitivity optimisation. This paper points out that 3-D model predicts the sample thermoelastic behaviour. Calcu lated criteria enable the choice of the best values of parameters. Exp erimental results show the advantage of an imaging criterion : particu larly contrast of metallic sample images is related to the relative po sition of excitation and detection beams.