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Proceedings Paper

Recent developments in transparent polycrystalline spinel for electro-optic applications
Author(s): Ishwar Aggarwal; Shyam Bayya; Guillermo Villalobos; Woohong Kim; Jasbinder Sanghera
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Paper Abstract

High optical quality spinel is being developed as exit aperture (windows and domes) for various electro-optic (EO) and infrared (IR) systems operating in harsh environmental conditions. These applications require windows with low absorption loss, low scattering loss, good index homogeneity, low transmitted wavefront error and high strength. Windows are also required in very large sizes and thicknesses for specialty applications. We have demonstrated fabrication of high optical quality spinel windows with high strength and environmental ruggedness. We achieved record low absorption loss of 6 ppm/cm at 1.06 μm and transmitted wavefront error of better than λ/10 at 633 nm. We are also developing technology for making very large and very thick spinel windows.

Paper Details

Date Published: 27 April 2009
PDF: 8 pages
Proc. SPIE 7302, Window and Dome Technologies and Materials XI, 73020F (27 April 2009); doi: 10.1117/12.820465
Show Author Affiliations
Ishwar Aggarwal, Naval Research Lab. (United States)
Shyam Bayya, Naval Research Lab. (United States)
Guillermo Villalobos, Naval Research Lab. (United States)
Woohong Kim, Naval Research Lab. (United States)
Jasbinder Sanghera, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 7302:
Window and Dome Technologies and Materials XI
Randal W. Tustison, Editor(s)

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