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Proceedings Paper

Fourier Photoellipsometers And Photopolarimeters Based On Modulated Optical Rotation
Author(s): R. M. A. Azzam
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Paper Abstract

Several Fourier photometric ellipsometers and polarimeters are described whose operation is based on the use of modulated optical rotation. We start with the oscillating-analyzer ellipsometer (OAE) that consists of a linear analyzer preceded by an ac optical rotator and show how this basic instrument can be modified, by the temporary insertion of a quarter-wave compensator, to perform as a complete polarimeter. Permanent addition of the quarter-wave compensator and a second ac optical rotator to the OAE leads to a family of complete polarimeters in which either the compensator alone or, more generally, both the compensator and analyzer are, in effect, oscillating at the same frequency as is induced by the presence of the ac optical rotation. We show, in all cases, how the Stokes parameters of the radiation incident on the polarimeter can be determined from limited Fourier analysis of the signal output of a linear photodetector that intercepts the light leaving the polarimeter.

Paper Details

Date Published: 19 October 1977
PDF: 4 pages
Proc. SPIE 0112, Optical Polarimetry: Instrumentation and Applications, (19 October 1977); doi: 10.1117/12.955541
Show Author Affiliations
R. M. A. Azzam, University of Nebraska (United States)

Published in SPIE Proceedings Vol. 0112:
Optical Polarimetry: Instrumentation and Applications
Rasheed M. A. Azzam; David Coffeen, Editor(s)

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