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Proceedings Paper

Compound-Cavity Lasers For Medium Range Lidar Applications
Author(s): D. A. Cohen; Z. M. Chuang; E. M. Strzelecki; L. A. Coldren; K. Y. Liou; C. A. Burrus
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Paper Abstract

Coupled-cavity tunable-single-frequency diode lasers are used in conjunction with an electronically tunable external cavity to increase the range of a coherent lidar system. Three-terminal DFB lasers and cleaved-coupled-cavity lasers are used which allow continuous wavelength tuning over a range greater than 2A by direct modulation of the injection current. This tuning range results in a distance resolution of less than a centimeter, without signal averaging or other enhancement techniques. By using an electrooptic waveguide phase modulator in the external cavity we have maintained a narrowed laser linewidth while simultaneously tuning the solitary laser. We have achieved a coherence length of 50 meters, a tuning range of 40 GHz, and a simultaneous tuning range-coherence length product of 750 GHz-m.

Paper Details

Date Published: 22 June 1989
PDF: 7 pages
Proc. SPIE 1043, Laser Diode Technology and Applications, (22 June 1989); doi: 10.1117/12.976377
Show Author Affiliations
D. A. Cohen, University of California (United States)
Z. M. Chuang, University of California (United States)
E. M. Strzelecki, University of California (United States)
L. A. Coldren, University of California (United States)
K. Y. Liou, AT&T Bell Laboratories (United States)
C. A. Burrus, AT&T Bell Laboratories (United States)

Published in SPIE Proceedings Vol. 1043:
Laser Diode Technology and Applications
Luis Figueroa, Editor(s)

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