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Theoretical Study on Grating Formation in Photovoltaic Photorefractive LiNbO3 Crystal with Short Light Pulses

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Abstract

Based on Valley’s quasi-cw approximation, the grating formation in materials exhibiting bulk photovoltaic effect on illumination with short light pulses (such as ns pulses) is investigated. We give the expression of the space-charge field, and find that it has two time constants. When considering and not considering the photovoltaic effect, the diagrams of two time constants as a function of irradiance in units of \(1/(s\tau_{R})\) are the same. The energy required to erase a grating to 1/e of its initial value is also studied in the two cases. The two results are also the same.

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Authors and Affiliations

  1. Physics Department of Science College, Shanghai University, Shanghai, 200444, China

    Bing Yang, Xiaona Yan & Bingkun Yu

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  1. Bing Yang
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  2. Xiaona Yan
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  3. Bingkun Yu
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Correspondence to Bing Yang.

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Yang, B., Yan, X. & Yu, B. Theoretical Study on Grating Formation in Photovoltaic Photorefractive LiNbO3 Crystal with Short Light Pulses. Opt Quant Electron 37, 723–733 (2005). https://doi.org/10.1007/s11082-005-8340-x

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  • DOI: https://doi.org/10.1007/s11082-005-8340-x

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