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All-chalcogenide variable infrared filter

机译:全硫属化物可变红外滤光片

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摘要

We present the design, fabrication, characterization of spatially variable infrared filter and a demonstration of the filter as a simple infrared spectrometer. A varying photonic band gap filter which consists of thermally evaporated, high refractive index contrast amorphous chalcogenide glass multilayers, makes the structure suitable to be used as spectrometer. Due to graded thickness structure, the filter exhibits a position dependent stop band and a cavity mode ranging from 2 to 8 μm wavelengths. It is demonstrated that the filter can be used to detect absorption peaks of common gases in the cavity mode range of the filter.
机译:我们介绍了空间可变红外滤光片的设计,制造,表征以及作为简单红外光谱仪的滤光片的演示。由热蒸发的高折射率对比非晶非晶硫属化物玻璃多层组成的可变光子带隙滤波器使该结构适合用作光谱仪。由于具有渐变的厚度结构,滤光片呈现出与位置有关的阻带和2至8μm波长范围内的腔模。已证明该过滤器可用于检测过滤器的腔模式范围内常见气体的吸收峰。

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