CRYSTAL GROWTH METHOD AND APPARATUS THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a single crystal having high quality and high uniformity while preventing changes in the composition during a process of crystal growth.

SOLUTION: The crystal growth apparatus to grow a crystal 29 while dipping and pulling a seed crystal 27 is equipped with: a first laser emitting visible light to detect a floating crystal deposited on the surface of a source solution 28; a second laser emitting a laser beam for heating to melt the floating crystal; a means 32 for emitting the visible light from the first laser onto the optical axis of the laser beam from the second laser; and a control means 33 adjusting the irradiation positions of the first and second lasers so as to irradiate the floating crystal with the visible light.

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