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首页> 外文会议>Spaceborne Sensors III >Spectral and imaging characteristics of a tunable ultra-narrow photonic-crystal interferometer for space-based applications
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Spectral and imaging characteristics of a tunable ultra-narrow photonic-crystal interferometer for space-based applications

机译：用于太空应用的可调谐超窄光子晶体干涉仪的光谱和成像特性

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摘要

High-finesse Fabry-Perot interferometers are useful tools when it comes to high-resolution spectroscopy and narrowband filtering. Rugged, reliable, narrow-band tunable filters are of special interest for remote sensing from ground, airborne and space-based platforms. This report discusses the results of a numerical analysis and experimental study of such a filter with its design based on the unique features of the photonic crystal interferometer (PCI). An optimal choice of the PCI components and their parameters allows achieving a sub-angstrom bandpass combined with a broad tunability range (< 10 nm) in the visible spectral regions. The prototype PCI system has the tunability over a 1 nm with a bandpass near 0.02 nm and an acceptance angle about 1 angular degree. Detailed consideration is given to the imaging characteristics of such an interferometer, and their dependence upon the quality of the individual components (i.e. the mirror substrates, dielectric layers, etc.). In summary, we present the results of the theoretical analysis and experimental study of the spectral and imaging characteristics of a high-finesse PCI, and their impairments due to deviations from the required parameters of the optical elements.
机译：高分辨率Fabry-Perot干涉仪是高分辨率光谱学和窄带滤波方面的有用工具。坚固，可靠的窄带可调滤波器对于从地面，机载和空基平台进行遥感特别感兴趣。本报告基于光子晶体干涉仪（PCI）的独特功能，讨论了这种滤波器的数值分析和实验研究结果，并对其进行了设计。 PCI组件及其参数的最佳选择允许在可见光谱区域内实现亚埃的带通，并具有宽的可调范围（<10 nm）。原型PCI系统具有1 nm的可调性，带通接近0.02 nm，接收角约为1角度。详细考虑了这种干涉仪的成像特性，以及它们对各个组件（即镜面基板，介电层等）的质量的依赖性。总而言之，我们介绍了高级PCI的光谱和成像特性以及由于偏离光学元件所需参数而造成的损伤的理论分析和实验研究的结果。

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