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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Giant photoinduced optical bleaching at room and liquid helium temperatures in Sb/As_(2)S_(3) multilayered films
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Giant photoinduced optical bleaching at room and liquid helium temperatures in Sb/As_(2)S_(3) multilayered films

机译：Sb / As_（2）S_（3）多层膜在室温和液氦温度下的巨光致光学漂白

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摘要

We report the observation of giant photo induced optical bleaching in Sb/As_(2)S_(3) multilayered film at room and liquid He temperatures, when irradiated with 532 nm laser at moderate intensities. The experimental results show a dramatic increase in transmittance near the band gap regime at both the temperatures; however the rates at which transmission change occurs are rather slow at low temperature. The huge change in transmission is due to the photo induced intermixing of As_(2)S_(3) layer with Sb. Our XPS measurements show that photo induced intermixing occurs through the wrong homopolar bonds, which under actinic light illumination are converted into energetically favored hetropolar bonds.
机译：我们报告了在室温和液态He温度下，以中等强度的532 nm激光辐照时，在Sb / As_（2）S_（3）多层膜中发生巨大的光致光学漂白的观察结果。实验结果表明，在两个温度下，带隙附近的透射率都显着增加。然而，在低温下，发生传输变化的速率相当慢。透射率的巨大变化归因于As_（2）S_（3）层与Sb的光诱导混合。我们的XPS测量表明，光诱导的混合是通过错误的同极性键发生的，在光化光照射下，这些同极性键被转换为在能量上有利的双极性键。

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