Krauz Lukáš, Páta Petr, Bednář Jan, Klíma Miloš
Opt Express. 2021 Apr 26;29(9):12813-12832. doi: 10.1364/OE.420571.
The paper aims to show the advantages of the infrared-optimised quasi-collinear AOTF (acousto-optic tunable filter) for the spatio-spectral hyperspectral imaging system. The optimisation process is presented based on the selected tetragonal anisotropic materials with exceptional optical and acousto-optical properties in IR (infrared) spectral region. These materials are further compared in terms of their features and suitability for AOTF design. The spectral resolution is considered as the main optimising parameter. Resulting from the analysis, the mercurous chloride (HgCl) single crystal is selected as a representative of the mercurous halide family for the presentation of the quasi-collinear AOTF model operating in LWIR (long-wave infrared) spectral band. The overall parameters of the AOTF model such as spectral resolution, chromatic field of view, acoustic frequency, and operational power requirements are estimated and discussed in results.
本文旨在展示红外优化准共线声光可调谐滤波器（AOTF）在空间光谱高光谱成像系统中的优势。基于在红外光谱区域具有优异光学和声光特性的所选四方各向异性材料，介绍了优化过程。根据其特性和对AOTF设计的适用性对这些材料进行了进一步比较。光谱分辨率被视为主要优化参数。分析结果表明，选择氯化亚汞（HgCl）单晶作为卤化亚汞家族的代表，用于展示在长波红外光谱波段工作的准共线AOTF模型。结果中估计并讨论了AOTF模型的总体参数，如光谱分辨率、色视场、声频和工作功率要求。
