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Proceedings Paper

Photorefractive two-wave mixing in tantalum-doped potassium niobate
Author(s): Anne E. Clement; G. Charmaine Gilbreath
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Paper Abstract

Photorefractive gain is measured in poled, 1% tantalum-doped Potassium Niobate (KNbO3). Two-wave mixing experiments are presented which exploit the r42 coefficient of KNbO3 by employing non-symmetric geometries which rotate the grating vector away from the optic axis. The effect of this rotation on the exponential gain coefficient is showr. Experimental results are compared to an analytic expression derived for this parameter. The experiments were performed using an Argon laser stabilized at X=51 4.5 nm. The light was extraordinarily polarized and ihe beams were incident on the b-face of the crystal. The absorption and the response time of the crystal were measured. Losses due to scattering and self-pumped phase conjugation were also investigated.

Paper Details

Date Published: 1 November 1990
PDF: 10 pages
Proc. SPIE 1334, Current Developments in Optical Engineering IV, (1 November 1990); doi: 10.1117/12.22859
Show Author Affiliations
Anne E. Clement, Naval Research Lab. (United States)
G. Charmaine Gilbreath, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 1334:
Current Developments in Optical Engineering IV
Robert E. Fischer; Warren J. Smith, Editor(s)

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