Optical properties of polycrystalline diamond films in the far-infrared

Andrew J. Gatesman; Robert H. Giles; Jerry Waldman; L. P. Bourget; Richard S. Post

doi:10.1117/12.22456

1 December 1990 Optical properties of polycrystalline diamond films in the far-infrared

Andrew J. Gatesman, Robert H. Giles, Jerry Waldman, L. P. Bourget, Richard S. Post

Proceedings Volume 1325, Diamond Optics III; (1990) https://doi.org/10.1117/12.22456
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

Room temperature Fourier transform spectroscopic transmissivity data in the far-infrared (10 - 360 cm1) were used to derive a model for the complex refractive index (n - ik) of polycrystalline diamond films grown by microwave plasma enhanced chemical vapor deposition. Transmission measurements were also made at a frequency of 19. 5 cm1 utilizing a CO2 optically pumped submillimeter laser. Due to their polycrystalline nature the diamond films exhibited a surface roughness with crystallite sizes ranging from 2 -8 p. m. This roughness introduced a diffuse scattering loss at the shorter wavelengths and is accounted for in the determination of the optical properties of the diamond. Residual absorption proportional to 2 is observed at longer wavelengths (1A cm1). 1.

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Andrew J. Gatesman, Robert H. Giles, Jerry Waldman, L. P. Bourget, and Richard S. Post "Optical properties of polycrystalline diamond films in the far-infrared", Proc. SPIE 1325, Diamond Optics III, (1 December 1990); https://doi.org/10.1117/12.22456

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