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Proceedings Paper

Near infrared (NIR) imaging techniques using lasers and nonlinear crystal optical parametric oscillator/amplifier (OPO/OPA) imaging and transferred electron (TE) photocathode image intensifiers
Author(s): George J. Yates; Thomas E. McDonald Jr.; David E. Bliss; Stewart M. Cameron; Kenneth H. Greives; Fred J. Zutavern
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Paper Abstract

Laboratory experiments utilizing different near-infrared (NIR) sensitive imaging techniques for LADAR range gated imaging at eye-safe wavelengths are presented. An OPO/OPA configuration incorporating a nonlinear crystal for wavelength conversion of 1.56 micron probe or broadcast laser light to 807 nm light by utilizing a second pump laser at 532 nm for gating and gain, was evaluated for sensitivity, resolution, and general image quality. These data are presented with similar test results obtained from an image intensifier based upon a transferred electron (TE) photocathode with high quantum efficiency (QE) in the 1-2 micron range, with a P-20 phosphor output screen. Data presented include range-gated imaging performance in a cloud chamber with varying optical attentuation of laser reflectance images.

Paper Details

Date Published: 11 April 2001
PDF: 9 pages
Proc. SPIE 4308, High-Speed Imaging and Sequence Analysis III, (11 April 2001);
Show Author Affiliations
George J. Yates, Los Alamos National Lab. (United States)
Thomas E. McDonald Jr., Los Alamos National Lab. (United States)
David E. Bliss, Sandia National Labs. (United States)
Stewart M. Cameron, Sandia National Labs. (United States)
Kenneth H. Greives, Sandia National Labs. (United States)
Fred J. Zutavern, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 4308:
High-Speed Imaging and Sequence Analysis III
James S. Walton; Alan M. Frank, Editor(s)

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