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Proceedings Paper

Photothermal common-path interferometry (PCI): new developments
Author(s): A. Alexandrovski; Martin Fejer; A. Markosian; Roger Route
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Paper Abstract

The PCI technique, a modification of photothermal spectroscopy, has become a powerful tool for testing various low absorptive optical materials and components. The current state of the technique and recent progress in extending its capabilities toward the mid-infrared region is presented. A 3.39 μm probe was used for testing and studying various semiconductor materials, such as p-doped GaAs, that can exhibit non-thermal response to the pump beam in addition to the thermal one. A simple theoretical model of the PCI method is shown to describe adequately the experimental data, making it possible to calibrate the setup without using a calibration standard.

Paper Details

Date Published: 28 February 2009
PDF: 13 pages
Proc. SPIE 7193, Solid State Lasers XVIII: Technology and Devices, 71930D (28 February 2009); doi: 10.1117/12.814813
Show Author Affiliations
A. Alexandrovski, Stanford Thermal Solutions (United States)
Martin Fejer, Stanford Univ. (United States)
A. Markosian, Stanford Univ. (United States)
Roger Route, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 7193:
Solid State Lasers XVIII: Technology and Devices
W. Andrew Clarkson; Norman Hodgson; Ramesh K. Shori, Editor(s)

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