Thermal modeling in cavity-enhanced photothermal spectroscopy

S. H. Chen; Zhuang Tang; Z. L. Rong; Hans A. Schuessler

doi:10.1117/12.17885

1 July 1990 Thermal modeling in cavity-enhanced photothermal spectroscopy

S. H. Chen, Zhuang Tang, Z. L. Rong, Hans A. Schuessler

Proceedings Volume 1208, Laser Photoionization and Desorption Surface Analysis Techniques; (1990) https://doi.org/10.1117/12.17885
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

The quality-factor dependent enhancement of the field of a weak probe laser beam inside a resonant optical cavity is used to measure the minute optical absorption of liquid films, metallic and high reflectivity dielectric coatings. The measurement is not affected by the presence of the surface reflections and the scattering from the strong pump laser beam, which is focussed onto the sample placed inside the cavity. Laser surface heating calculations were performed and account qualitatively for both the spatial and temporal behavior of the observed signals.

Citation Download Citation

S. H. Chen, Zhuang Tang, Z. L. Rong, and Hans A. Schuessler "Thermal modeling in cavity-enhanced photothermal spectroscopy", Proc. SPIE 1208, Laser Photoionization and Desorption Surface Analysis Techniques, (1 July 1990); https://doi.org/10.1117/12.17885

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