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首页> 外文会议>Conference on Liquid Crystals VII; Aug 5-7, 2003; San Diego, California, USA >Device for measuring laser beam intensity
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Device for measuring laser beam intensity

机译：激光强度测量装置

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摘要

The giant optical non-linearity of liquid crystals was used to develop a device for measuring intensity of laser beams. The sensitivity of the device was substantially increased by substitution of one of glass substrates of the liquid crystal cell by a photosensitive semiconductor. It is shown that this is due to decreased anchoring energy of LC molecules on the semiconductor surface. The peculiarities of giant optical non-linearity in a liquid crystal cell with one semiconductor substrate are investigated. The discovered regularities allow supposing that the observed decrease in anchoring energy is caused by the semiconductor surface states recharging at light generation.
机译：液晶的巨大光学非线性被用于开发测量激光束强度的装置。通过用光敏半导体代替液晶单元的玻璃基板之一，大大提高了器件的灵敏度。结果表明，这是由于LC分子在半导体表面的锚定能量降低所致。研究了具有一个半导体衬底的液晶单元中的巨大光学非线性的特性。所发现的规律性允许假设所观察到的锚固能量的降低是由在发光时重新充电的半导体表面状态引起的。

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