Laser measurements of optical and thermal properties of CVD diamond at high temperatures

Autor: Evgenii N Lubnin, Friedrich Dausinger, O. G. Tsarkova, Elena D. Obraztsova, Serge V. Garnov, Vitali I. Konov
Rok vydání: 1998
Předmět:
Zdroj: Lasers in Synthesis, Characterization, and Processing of Diamond.
ISSN: 0277-786X
DOI: 10.1117/12.328211
Popis: The laser express technique has been applied to high temperature measurements of CVD diamond reflectivity R and absorption coefficient (alpha) for radiation with 1.06 mm wavelength as well as heat capacity. It was found that at T > 1000 degrees C and heating cycles of a few seconds the sample surface layer with thickness of 100 nm becomes graphitized that leads to dramatic growth of (alpha) from initial value of about 10 cm-1. The obtained results on heat capacity at T >= 800 degrees C are well matched with the known data at lower temperatures.© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Databáze: OpenAIRE