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Volume and surface phase holographic gratings in the photorefractive crystal Bi/sub 2/TeO/sub 5/

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5 Author(s)
Kukhtarev, N. ; Dept. of Phys., Alabama A&M Univ., Normal, AL, USA ; Kukhtareva, T. ; Mager, L. ; Fort, A.
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Summary form only given. We describe results on the first recording of reflection-type gratings and real-time surface gratings in the new photorefractive crystal Bi/sub 2/TeO/sub 5/. In our experiments, we used a CW Cr-ion laser (wavelength 514 nm). An unexpanded laser beam was directed along the C-axis and the reference beam was formed by the retroreflecting mirror. We have observed maximal diffraction efficiency of the order of 14% with exposure time of 45 min. As well as recording effective volume reflection-type gratings for the first time, we detected nanoscale surface gratings (with period 195 nm) using an atom force microscope.

Published in:

Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on

Date of Conference:

11-11 May 2001