Rugged spinel for imaging applications (Conference Presentation)

Shyam S. Bayya; Woohong Kim; Guillermo Villalobos; Michael Hunt; Jas Sanghera; Bryan Sadowski; Ishwar Aggarwal

doi:10.1117/12.2560864

27 April 2020 Rugged spinel for imaging applications (Conference Presentation)

Shyam S. Bayya, Woohong Kim, Guillermo Villalobos, Michael Hunt, Jas Sanghera, Bryan Sadowski, Ishwar Aggarwal

Proceedings Volume 11403, Advanced Optics for Imaging Applications: UV through LWIR V; 114030C (2020) https://doi.org/10.1117/12.2560864
Event: SPIE Defense + Commercial Sensing, 2020, Online Only

Abstract

Rugged optics and window materials with good visible and IR transmission are needed for several sensing and imaging application. Some of the applications require very thick windows or windows in complex geometries, which impose additional limitations on material selection. Magnesium aluminate spinel (MgAl2O4), or spinel for short, is a rugged window material with excellent transmission in ultraviolet to midwave infrared (0.18 – 5.5 m) wavelengths. Spinel is comparable to sapphire and ALON in its ruggedness while having superior transmission near 5 m in wavelength. With its cubic crystal structure, spinel is isotropic unlike sapphire which is birefringent. We have been developing high optical quality spinel ceramics in different shapes and sizes. Current status of these efforts in making spinel windows in large sizes and conformal shapes for several imaging applications will be discussed.

Conference Presentation

Citation Download Citation

Shyam S. Bayya, Woohong Kim, Guillermo Villalobos, Michael Hunt, Jas Sanghera, Bryan Sadowski, and Ishwar Aggarwal "Rugged spinel for imaging applications (Conference Presentation)", Proc. SPIE 11403, Advanced Optics for Imaging Applications: UV through LWIR V, 114030C (27 April 2020); https://doi.org/10.1117/12.2560864

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