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Proceedings Paper

Novel diffractive dynamical elements: DDE based on adaptive supergrating
Author(s): George Eugene Dovgalenko; Irina I. Loutchkina
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Paper Abstract

Highly efficient diffractive grating based on doped photorefractive crystal sillenite family have been observed without application of external electric field. The diffractive efficiency of the doped crystal is discovered 700 times as much as that of the undoped crystals. The space frequency greater than 11363 lines/mm and response time of 70 msec using low power cw laser have been achieved. Practically unlimited number of grating cycles of write, erase and read have been performed without optical damage and external electric or temperature fields. High adaptivity (self-reconstruction) of this grating to external influence fields (vibration, temperature, electric, optic, etc.) allows creation of a new optical development of small size diffractive dynamic elements -- DDE in contemporary optical engineering. Applications of DDE to microinterferometry, single beam microcorrelators, precision targeting have been presented.

Paper Details

Date Published: 1 November 1996
PDF: 12 pages
Proc. SPIE 2863, Current Developments in Optical Design and Engineering VI, (1 November 1996); doi: 10.1117/12.256222
Show Author Affiliations
George Eugene Dovgalenko, IRPA Rotor Control (United States)
Irina I. Loutchkina, IRPA Rotor Control (Ukraine)


Published in SPIE Proceedings Vol. 2863:
Current Developments in Optical Design and Engineering VI
Robert E. Fischer; Warren J. Smith, Editor(s)

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