17 May 2016 Evaluation of chalcogenide glasses for multispectral imaging in the visible, SWIR and LWIR spectral regions
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Abstract
In this paper, a first part will present the mechanical properties of the chalcohalide glass system GeS2-Ga2S3-CsCl. The hardness, Young’s modulus, shear modulus and toughness of a series of glasses (0.8 GeS2 - 0.2 Ga2S3)100-x CsClx with x = 0, 5, 10, 15 have been investigated and compared with other glasses. Two particular compositions 75 GeS2 - 15 Ga2S3 - 10 CsCl and 65 GeS2 - 20 Ga2S3 - 15 CsCl are compared with existing industrial chalcogenide glasses. In a second part, two multispectral antireflective coatings are presented. These coatings, developed for a multispectral application, enhanced the transmissions in specific bands.
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A. Bréhault, L. Calvez, T. Pain, H. L. Ma, D. Bigou, M. Duchêne, P. Adam, J. Rollin, X. H. Zhang, "Evaluation of chalcogenide glasses for multispectral imaging in the visible, SWIR and LWIR spectral regions", Proc. SPIE 9822, Advanced Optics for Defense Applications: UV through LWIR, 982202 (17 May 2016); doi: 10.1117/12.2222900; https://doi.org/10.1117/12.2222900
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