19 December 1986 Current and Emerging Materials for 3-5 Micron IR Transmission
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Abstract
New, more durable windows and domes will be required for future 3-5 micron IR systems. Various oxide and oxynitride crystalline materials are candidates for these new requirements, including sapphire, spinel, ALON, yttria, and MgO. These materials are compared with respect to optical properties, durability, and fabrication costs. Two extrinsic properties, thermal conductivity and fracture strength, have strong effects on thermal shock resistance. Birefringent polycrystalline materials will not have adequate optical resolution for future systems.
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Richard L. Gentilman, "Current and Emerging Materials for 3-5 Micron IR Transmission", Proc. SPIE 0683, Infrared and Optical Transmitting Materials, (19 December 1986); doi: 10.1117/12.936409; https://doi.org/10.1117/12.936409
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