Generalized aberration reduction procedure of a concave grating for hyperspectral imaging

Cheng-Hao Ko; Chia-Hui Tang; Jih-Run Tsai; Bang-Ji Wang

doi:10.1117/12.2073260

17 December 2014 Generalized aberration reduction procedure of a concave grating for hyperspectral imaging

Cheng-Hao Ko, Chia-Hui Tang, Jih-Run Tsai, Bang-Ji Wang

Proceedings Volume 9293, International Optical Design Conference 2014; 92930F (2014) https://doi.org/10.1117/12.2073260
Event: International Optical Design Conference, 2014, Kohala Coast, Hawaii, United States

Abstract

A generalized optimization process for reducing the aberration of a concave grating is developed. Our aberration reduction process is to minimize the root-mean-square spot sizes for the spectral range on the detector plane. To evaluate the performance, a model based on a previous concave grating designed for a mid-infrared (7.5 μm ~13.5 μm) spectrometer is built. The result shows that the current new approach has a dramatic improvement in aberration reduction and yields better spectral resolution.

Citation Download Citation

Cheng-Hao Ko, Chia-Hui Tang, Jih-Run Tsai, and Bang-Ji Wang "Generalized aberration reduction procedure of a concave grating for hyperspectral imaging", Proc. SPIE 9293, International Optical Design Conference 2014, 92930F (17 December 2014); https://doi.org/10.1117/12.2073260

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