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Proceedings Paper

Real-time chirp control of an external-cavity semiconductor laser for absolute distance measurement
Author(s): Thierry M. Bosch; Noel Servagent
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Paper Abstract

A new laser range finder using optical feedback interferometry has been developed. Our purpose is to design a high-accuracy sensor for short distances, the principle being based on the use of a Mach-Zender interferometer to control the chirp of the laser diode. Experimentally, a distance to the target of 10 cm with an accuracy of ±50 µm has been determined.

Paper Details

Date Published: 7 March 2006
PDF: 10 pages
Proc. SPIE 4101, Laser Interferometry X: Techniques and Analysis, (7 March 2006); doi: 10.1117/12.498413
Show Author Affiliations
Thierry M. Bosch, Ecole des Mines de Nantes (France)
Noel Servagent, Ecole des Mines de Nantes (France)

Published in SPIE Proceedings Vol. 4101:
Laser Interferometry X: Techniques and Analysis
Gordon M. Brown; Malgorzata Kujawinska; Werner P. O. Jueptner; Ryszard J. Pryputniewicz; Ryszard J. Pryputniewicz; Mitsuo Takeda, Editor(s)

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