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Photorefractive response of CdTe:V under AC electric field from 1 to 1.5µm

Abstract : The AC field technique leading to the enhancement of the photorefractive effect is applied to Vanadium-doped Cadmium Telluride. Net photorefractive gain is obtained for the three wavelengths studied : 1.06μm, 1.32μm and 1.55μm. We observed a change in the sign of the photorefractive gain between 1.06μm and 1.55μm, which represents the first evidence of an electron-hole competition in this material. Theoretical interpretation is performed using an extension of the AC field theoretical model with bipolar conduction
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Yves Belaud, Philippe Delaye, Jean-Claude Launay, Gérald Roosen. Photorefractive response of CdTe:V under AC electric field from 1 to 1.5µm. Optics Communications, Elsevier, 1994, 105, pp.204-208. ⟨10.1016/0030-4018(94)90716-1⟩. ⟨hal-00677548v2⟩

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