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Proceedings Paper

Ladar using broadband optical source
Author(s): Roland K. Appel; William N. Dawber; John Lockwood
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Paper Abstract

A simultaneously broadband laser has been developed for laser radar applications. Simultaneous broadband operation is important in enabling rapid (single pulse) data measurement, avoiding atmospheric scintillation or turbulence effects that can dog a more conventional laser which is sequentially tuned to a series of probe wavelengths. The laser is based on an optical parametric oscillator operating in a non-collinear critical phase matching geometry, thereby enabling broadband operation. (beta) -Barium Borate is pumped by a frequency tripled NdYAG laser to achieve lasing from 500 - 1220 nm. The laser is further able to simultaneously lase at an arbitrary series of narrow wavelengths chosen to correspond to the absorption lines of a trace gas. The laser has been demonstrated with an output pulse energy exceeding 40 mJ with an instantaneous full bandwidth greater than 150 nm in the visible. The paper describes the current state of the laser development program. Laboratory and test trial results are presented.

Paper Details

Date Published: 8 September 1998
PDF: 10 pages
Proc. SPIE 3380, Laser Radar Technology and Applications III, (8 September 1998); doi: 10.1117/12.327185
Show Author Affiliations
Roland K. Appel, Defence Evaluation and Research Agency Portsdown West (United Kingdom)
William N. Dawber, Defence Evaluation and Research Agency Portsdown West (United Kingdom)
John Lockwood, Defence Evaluation and Research Agency Portsdown West (United Kingdom)


Published in SPIE Proceedings Vol. 3380:
Laser Radar Technology and Applications III
Gary W. Kamerman, Editor(s)

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