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Proceedings Paper

VIS-IR transmitting windows
Author(s): S. S. Bayya; G. D. Chin; G. Villalobos; J. S. Sanghera; I. D. Aggarwal
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Paper Abstract

The U.S. Naval Research Laboratory (NRL) has developed two unique materials with excellent properties for various military and commercial applications in the UV-Vis-IR wavelength range. These materials are: an amorphous Barium Gallo-Germanate (BGG) glass and a polycrystalline Magnesium Aluminate Spinel. The BGG glass is made using traditional glass melting techniques, and was developed as a low cost alternative to the currently used window materials. Large prototype windows have been fabricated for a Navy reconnaissance program. BGG windows have been successfully tested for environmental ruggedness (MIL-F-48616) and rain erosion durability up to 300 mph. BGG glass is currently under development and evaluation for High Energy Laser (HEL) applications. A new process has been developed to sinter spinel to clear transparency with very high yields. This process has been used to make various sizes and shapes (flats and domes) and is readily scalable to industrial sizes to produce large windows & domes for various applications. NRL has also developed modified BGG glasses, which are compatible with Spinel and ALON substrates for bonding.

Paper Details

Date Published: 18 May 2005
PDF: 10 pages
Proc. SPIE 5786, Window and Dome Technologies and Materials IX, (18 May 2005); doi: 10.1117/12.603753
Show Author Affiliations
S. S. Bayya, Naval Research Lab. (United States)
G. D. Chin, Naval Research Lab. (United States)
G. Villalobos, Naval Research Lab. (United States)
J. S. Sanghera, Naval Research Lab. (United States)
I. D. Aggarwal, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 5786:
Window and Dome Technologies and Materials IX
Randal W. Tustison, Editor(s)

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