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1 December 1990 Optical properties of polycrystalline diamond films in the far-infrared
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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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);

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