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Proceedings Paper

Interferometric sensors based on sinusoidal optical path length modulation
Author(s): Holger Knell; Markus Schake; Markus Schulz; Peter Lehmann
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Paper Abstract

Sinusoidal optical path length modulation of the reference or the measurement arm of an interferometer is a technique which is a fast alternative to white light or phase shifting interferometry. In this paper three different sensors using this periodical modulation are presented. In addition, signal processing algorithms based on Discrete Fourier Transform, Hilbert Transform and parameter estimation are analyzed. These algorithms are used to obtain measurement results which demonstrate the capabilities of the presented interferometric sensors.

Paper Details

Date Published: 1 May 2014
PDF: 10 pages
Proc. SPIE 9132, Optical Micro- and Nanometrology V, 91320I (1 May 2014); doi: 10.1117/12.2051508
Show Author Affiliations
Holger Knell, Univ. Kassel (Germany)
Markus Schake, Univ. Kassel (Germany)
Markus Schulz, Univ. Kassel (Germany)
Peter Lehmann, Univ. Kassel (Germany)


Published in SPIE Proceedings Vol. 9132:
Optical Micro- and Nanometrology V
Christophe Gorecki; Anand Krishna Asundi; Wolfgang Osten, Editor(s)

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