Enhancement of the photorefractive gain at 13–15 μm in CdTe using alternating electric fields
- 1 August 1992
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America B
- Vol. 9 (8) , 1461-1466
- https://doi.org/10.1364/josab.9.001461
Abstract
We report large enhancement of the two-beam-coupling gain in vanadium-doped cadmium telluride. We used the applied-alternating-field method with square and sinusoidal waveforms. With nominally square waveforms gain coefficients in excess of 10 cm−1 have been measured, which significantly exceed the absorption coefficient of 2 cm−1 for our sample. The results agree well with theory when the major effects of the ac waveform shape, internal field screening, and large-signal effects are taken into account.Keywords
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