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Resonant two-wave mixing in photorefractive materials with the aid of dc and ac fields

机译:借助直流和交流电场在光折变材料中进行共振两波混合

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摘要

A recently predicted resonant effect for the enhancement of two-wave mixing in photorefractive materials is investigated. The resonance occurs when the frequency of the applied ac field agrees with the eigenfrequency for high de electric fields, but the resonance is smeared out for lower fields. A modified theory, taking into account the second temporal harmonic of the space-charge wave, shows good agreement with the experimental results. (C) 1997 Optical Society of America.
机译:研究了最近预测的共振效应,以增强光折射材料中的两波混合。当所施加的交流电场的频率与高de电场的本征频率一致时,就会发生共振,但是对于较低电场,共振会被抹去。修改后的理论,考虑到空间电荷波的二次谐波,与实验结果吻合良好。 (C)1997年美国眼镜学会。

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