Photorefractive effect in GaP
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
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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