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Microsecond-resolved SDR-based cavity ring down ellipsometry

机译:微秒分辨的基于SDR的腔振铃椭圆仪

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We present an experimental apparatus that allows microsecond-resolved ellipsometric and absorption measurements. The apparatus is based on an optical cavity containing a Dove prism, in which light undergoes total internal reflection (TIR), while the data acquisition is based on software defined radio technology and custom-built drivers. We demonstrate the ability to sense rapid variations in the refractive index above the TIR interface for arbitrarily long times with a temporal resolution of at least 2 mu s. (C) 2015 Optical Society of America
机译:我们介绍了一种允许微秒分辨椭圆仪和吸收率测量的实验仪器。该设备基于包含道威棱镜的光腔,光在其中经过全内反射(TIR),而数据采集则基于软件定义的无线电技术和定制的驱动器。我们证明了能够感知TIR界面上方折射率的快速变化任意长时间,并且具有至少2μs的时间分辨率。 (C)2015年美国眼镜学会

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