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Proceedings Paper

Analysis of Fizeau wedge with a non-air gap by plane wave expansion
Author(s): Elena Stoykova; Margarita Deneva; Marin Nenchev
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Paper Abstract

The optical interferential wedge or Fizeau wedge (FW) is a useful optical element with various applications in optical metrology, spectroscopy and laser technique. Various FW applications require knowledge of its response to illumination by a laser beam with an arbitrary wavefront. Recently, we applied the plane wave expansion method to study transmission and reflection of an air-gap FW under illumination with a Gaussian beam. The approach is based on the angular spectrum of the beam and the known FW response to illumination with a plane wave. In this study, we adapt this approach for the more general and more frequently encountered case of a FW with a non-air gap. We developed an approximate algorithm, which is applicable at small incidence angles to wedges with refractive indices different from 1 and illuminating beams with arbitrary amplitude and phase distributions. Comparison to the experiment is also provided.

Paper Details

Date Published: 3 October 2019
PDF: 6 pages
Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics, 112071V (3 October 2019); doi: 10.1117/12.2527464
Show Author Affiliations
Elena Stoykova, Institute of Optical Materials and Technologies (Bulgaria)
Margarita Deneva, Technical Univ. of Sofia (Bulgaria)
Marin Nenchev, Technical Univ. of Sofia (Bulgaria)

Published in SPIE Proceedings Vol. 11207:
Fourth International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. M. Martins Costa, Editor(s)

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