Authors S.P. Malyukov, A.V. Sayenko, Y.V. Klunnikova
Month, Year 09, 2014 @en
Index UDC 681.518: 666.1/28
Abstract The experimental researches of sapphire laser processing and film formation on the sapphire surface were made on the plant LIMO 100-532/1064-U. The processing was realized by solid-state Nd:YAG laser with a fixed wavelength 1064 nm. The most important thing in the research of laser processing film – sapphire structures is to calculate the temperature and to determine the condition modes of heat treatment providing maximum of defects annealing. The calculation of temperature distribution in the course of laser action on the film – sapphire structure was made by numerical modeling of the non-stationary differential equations of heat conductivity that consists in approximation of the particular derivatives initial equations by corresponding final differences. The simulated results allowed to determine the optimal process rates of the sample processing in different temperatures of laser radiation. It was established that when the average laser power was 80–90 W the surface temperature was approximately 800–900 K, which is the required condition for film growth on the surface of sapphire substrate.

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Keywords Technological process; sapphire single-crystals; temperature distribution; laser treatment.
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