基于aodf的反射光栅光谱仪

Qian Tang, Guo Zhang, Chunmin Zhang, Baochang Zhao
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引用次数: 1

摘要

在大气探测方面,提出了包括5个亚光谱仪(2个紫外光谱仪,1个VIS/IR光谱仪和2个SWIR光谱仪),覆盖240-2400nm的光谱仪。该光谱仪将在400公里的高度运行,有三种观测模式(近翼、掩星和纳迪尔)。三种模式的空间分辨率均优于100km2。本文介绍了基于声光可调谐滤波器(AOTF: acoustic - optical Tunable Filter)的五种子光谱仪中的一种,工作波长在1500-2400nm。该方案利用AOTF选择波数为80cm-1的不同光谱范围,通过反射光栅实现0.1nm (λ/Δλ >105)的分辨率。用透射光组代替抛物面反射器。给出了详细的设计指标,并用Zemax软件进行了仿真。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reflection grating spectrometer based on AOTF
As for detecting the atmosphere, a spectrometer includes five sub-spectrometers (two UV spectrometers, one VIS/IR spectrometer and two SWIR spectrometers) covering 240-2400nm is proposed. The spectrometer will be operated at height of 400km in three viewing modes (Limb, Occultation and Nadir). The spatial resolution is better than 100km2 in the three modes. This article introduces one of the five sub-spectrometers which is based on AOTF (AOTF: Acoustic-Optic Tunable Filter) and working in 1500-2400nm. This scheme utilizes AOTF to select different spectral ranges with 80cm-1 wave number, and then realizes the resolution of 0.1nm ( λ/Δλ >105 ) by a reflection grating. Instead of the parabolic reflector, a transmission light group is selected. The detail design indexes are given and stimulated by Zemax.
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