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Optical phase conjugation in an azo-doped liquid crystal valve

机译:偶氮掺杂液晶阀中的光相共轭

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摘要

A novel method of generating optical phase conjugation using an azo-doped liquid crystal valve is proposed for the first time. Its re-sponse time, diffraction efficiency, and threshold intensity are measured. The resolution of the device is discussed. An observation of diffraction rings caused by self-phase modulation when a low-power laser beam passes through the azo-doped liquid crystal valve is reported. Finally, these phenomena are shown to be results of the reorientation of liquid crystal molecules driven by the photoinduced isomerization, not merely an azo dye effect or a local heating effect.
机译:首次提出了一种使用偶氮掺杂液晶阀产生光相位共轭的新方法。测量其响应时间,衍射效率和阈值强度。讨论了设备的分辨率。据报道,当低功率激光束通过偶氮掺杂液晶阀时,由自相位调制引起的衍射环的观察结果。最后,这些现象被证明是由光诱导异构化驱动的液晶分子重新取向的结果,而不仅仅是偶氮染料效应或局部加热效应。

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