Compact large-aperture Fabry-Perot interferometer modules for gas spectroscopy at mid-IR

Compact large-aperture Fabry-Perot interferometer modules for gas spectroscopy at mid-IR
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用于中红外气体光谱的紧凑型大口径法布里-珀罗干涉仪模块

DOI:
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发表时间:
2014
期刊:
Photonics West - Optoelectronic Materials and Devices
影响因子:
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通讯作者:
T. Waldmann
T. Waldmann
中科院分区:
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文献类型:
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作者:
U. Kantojärvi;A. Varpula;Tapani Antila;C. Holmlund;J. Mäkynen;A. Näsilä;R. Mannila;A. Rissanen;J. Antila;R. Disch;T. Waldmann

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自90年代以来,VTT已开发出用于可见光和红外波长的法布里-珀罗干涉仪(FPI)。在这里,我们提出了两个新的中红外气体光谱平台,具有大的光学孔径,以提供高的光学吞吐量,但仍然使仪器尺寸小型化。第一个平台是一个可调谐滤波器,它取代了传统的滤光轮,其工作波长为4-5微米。第二个平台是相关光谱,其中干涉仪提供梳状透射图案,模仿双原子分子在4.7-4.8 μ m波长范围内的吸收。布拉格反射镜具有2-4个多晶硅和氧化硅薄层。
VTT has developed Fabry-Pérot Interferometers (FPI) for visible and infrared wavelengths since 90’s. Here we present two new platforms for mid-infrared gas spectroscopy having a large optical aperture to provide high optical throughput but still enabling miniaturized instrument size. First platform is a tunable filter that replaces a traditional filter wheel, which operates between wavelengths of 4-5 um. Second platform is for correlation spectroscopy where the interferometer provides a comb-like transmission pattern mimicking absorption of diatomic molecules at the wavelength range of 4.7-4.8 um. The Bragg mirrors have 2-4 thin layers of polysilicon and silicon oxide.
DOI: 10.1016/j.jqsrt.2013.07.002
发表时间: 2013-11-01
影响因子: 2.3
作者:
Rothman, L. S.;Gordon, I. E.;Wagner, G.
通讯作者: Wagner, G.