Bulk diamond for IR/rf windows and domes

Charles B. Willingham; Thomas M. Hartnett; Richard P. Miller; Robert B. Hallock

doi:10.1117/12.277040

27 June 1997 Bulk diamond for IR/rf windows and domes

Charles B. Willingham, Thomas M. Hartnett, Richard P. Miller, Robert B. Hallock

Author Affiliations +

Proceedings Volume 3060, Window and Dome Technologies and Materials V; (1997) https://doi.org/10.1117/12.277040
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

Microwave plasma deposition techniques for preparing optical quality, uniformly thick diamond plates and domes continue to be actively developed. Thicknesses greater than two millimeters have been demonstrated for optical quality dome blanks, and excellent optical quality has been obtained for five inch diameter plates. Presently achievable CVD diamond is the strongest LWIR-transparent material and is impervious to thermal shock. It can be used in its present form for prototype window preparation. Nevertheless, further strength improvement is required for CVD diamond for applications requiring resistance to particle (e.g. raindrop) impacts. Fracture strength improvement is a primary objective of diamond technology development. Continued development of optical diamond technology must also emphasize increased deposition rates for the highest quality material and optimized polishing processes to assure its place as a cost effective optical material for high performance applications.

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Charles B. Willingham, Thomas M. Hartnett, Richard P. Miller, and Robert B. Hallock "Bulk diamond for IR/rf windows and domes", Proc. SPIE 3060, Window and Dome Technologies and Materials V, (27 June 1997); https://doi.org/10.1117/12.277040

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