KBBF and RBBF are the only two deep-UV nonlinear optical crystals that can generate coherent radiation below 200 nm by direct second harmonic. The common technique used to grow these two kinds of crystals is spontaneous nucleation by flux method. In this paper, we modified the growth method by applying a rotating temperature field during the crystallization process. The rotary temperature field was realized by rotating the heating chamber while the crucible and crystal were immobilized. It enhances the mass and heat transport during a non-seeded growth process in the absence of convective flow. The inclusions enveloped in crystals were reduced and the growth rate of KBBF crystal was increased. By studying the mass and heat transfer within the melt and subsequently optimizing the growth parameters in rotating temperature field, we were able to obtain high quality KBBF crystals. The prospect of this new crystal growth method was evaluated.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/29126 must be provided.