Polycrystalline MgA1[sub]2[/sub]O[sub]4[/sub] Spinel A Broad Band Optical Material For Offensive Environments

K. E. Green; J. L. Hastert; D. W. Roy

doi:10.1117/12.960757

11 September 1989 Polycrystalline MgA1₂O₄ Spinel A Broad Band Optical Material For Offensive Environments

K. E. Green, J. L. Hastert, D. W. Roy

Proceedings Volume 1112, Window and Dome Technologies and Materials; (1989) https://doi.org/10.1117/12.960757
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

Today's optical systems are sometimes exposed to environments in which traditional optical materials rapidly degrade. In contrast, polycrystalline MgA1204 Spinel, transparent from three hundred nanometers to five and a half microns, with a unique combination of optical and physical properties provides a superior alternative in respect to stability to solar radiation, rain and particle erosion, high temperatures, and humidity, and is resistant to attack in strong acid and alkali solutions. Comparative data prior to and following exposure to a variety of environments will be reported. In addition, current and projected size and shape capability will be reviewed.

Citation Download Citation

K. E. Green, J. L. Hastert, and D. W. Roy "Polycrystalline MgA1₂O₄ Spinel A Broad Band Optical Material For Offensive Environments", Proc. SPIE 1112, Window and Dome Technologies and Materials, (11 September 1989); https://doi.org/10.1117/12.960757

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