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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 15, Iss. 21 — Nov. 1, 1990
  • pp: 1197–1199

Photorefractive effect in GaP

K. Kuroda, Y. Okazaki, T. Shimura, H. Okamura, M. Chihara, M. Itoh, and I. Ogura  »View Author Affiliations


Optics Letters, Vol. 15, Issue 21, pp. 1197-1199 (1990)
http://dx.doi.org/10.1364/OL.15.001197


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Abstract

The photorefractive effect in undoped semi-insulating GaP was observed. GaP has a photorefractive sensitivity in the spectral region of 0.6 to 0.9 μm. The photorefractive center is the deep donor resulting from the P antisite defect. We measured the two-beam coupling gain coefficient and its time constant as functions of the grating period and the pumping intensity, using a 633-nm He–Ne laser. The maximum gain coefficient of 0.33 cm−1 was obtained at a grating period of 1.1 μm. The time constant, which depends on the grating period, was 3–20 msec at a pumping intensity of 30 mW/cm2.

© 1990 Optical Society of America

History
Original Manuscript: May 17, 1990
Manuscript Accepted: July 24, 1990
Published: November 1, 1990

Citation
K. Kuroda, Y. Okazaki, T. Shimura, H. Okamura, M. Chihara, M. Itoh, and I. Ogura, "Photorefractive effect in GaP," Opt. Lett. 15, 1197-1199 (1990)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-15-21-1197

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