Optical saturation effects in photothermal spectroscopy

Authors

Samuel B. Peralta ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

The dependence of the fundamental and harmonic photothermal (PT) signals on the intensity I₀ of the illumination source is analyzed. It is found that the PT signal does not indefinitely increase with I₀, but at sufficiently high power densities begins to decrease as 1/I₀. The onset of optical saturation thus defines an upper limit to the sensitivity of spectrometers based on photothermal detection.

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Issue

1988: Proceedings of the Seventh Samahang Pisika ng Pilipinas National Physics Congress

Article ID

SPP-1998-LS-05

Section

Laser Physics and Spectroscopy

Published

1988-05-30

How to Cite

[1]

SB Peralta, Optical saturation effects in photothermal spectroscopy, Proceedings of the Samahang Pisika ng Pilipinas 7, SPP-1998-LS-05 (1988). URL: https://proceedings.spp-online.org/article/view/SPP-2020-LS-05.