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Proceedings Paper

Noise-modulated laser diode interferometer and its application to range finding
Author(s): Wolfgang Holzapfel; Werner Baetz; Jan Christian Braasch
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Paper Abstract

Theory, experimental performance, and application of the noise-modulated interferometer are presented. This novel two-beam interferometer applies (1st) a laser diode source that is stochastically modulated in its frequency and (2nd) a common photodetector in the output arm followed by an averaging frequency counter. It is demonstrated that homodyne detecting of the two interferometer beams and counting the averaged beat frequency can be understood as a correlation process. By applying Horton's Anticorrelation' function to the signal processing channel of the noise-modulated interferometer, the range R <EQ 2 m of reflecting target is determined with high precision.

Paper Details

Date Published: 1 March 1994
PDF: 9 pages
Proc. SPIE 2004, Interferometry VI: Applications, (1 March 1994); doi: 10.1117/12.172582
Show Author Affiliations
Wolfgang Holzapfel, Univ. Kassel (Germany)
Werner Baetz, Univ. Kassel (Germany)
Jan Christian Braasch, Univ. Kassel (Germany)

Published in SPIE Proceedings Vol. 2004:
Interferometry VI: Applications
Ryszard J. Pryputniewicz; Gordon M. Brown; Werner P. O. Jueptner, Editor(s)

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