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Proceedings Paper

Study on in situ and real-time observation during process of SCN crystal growth
Author(s): Songhe Lei; Changle Chen; Mengmeng Duan
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Paper Abstract

Crystal growth is dynamic coupling of transportation process and growth process between interfaces. Convection during crystal growth will tend to changes of liquation component and the defect of impurity stripe. The convection and stability should further be studied to obtain the crystal of high quality. It is necessary to obtain surface configuration and distribution of temperature around liquation phase and solute concentration. The technique of in-situ and real-time observation is a brand new technique, which is widely applied to production and scientific research. Information of crystal growth will be obtained from the observation. But the in-situ and real-time observation is uncharitableness for the experiment equipment, some conditions matched to the character of crystal must be provided. In the paper a design with ingenious and cheap crystal growth cell and circulation system of constant-temperature water which is suitable for the experiment of observation is developed, and a combined light path based on the technique of flowing visualization is designed to match to the crystal cell. The combined light path which is made up of the schlieren method and the principle of Mach-zehnder interference is non destructive, high sensitivity and observable, so it is an effective method to study the crystal growth.

Paper Details

Date Published: 9 June 2006
PDF: 7 pages
Proc. SPIE 6149, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 61492R (9 June 2006); doi: 10.1117/12.674293
Show Author Affiliations
Songhe Lei, Northwestern Polytechnical Univ. (China)
Changle Chen, Northwestern Polytechnical Univ. (China)
Mengmeng Duan, Northwestern Polytechnical Univ. (China)


Published in SPIE Proceedings Vol. 6149:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Shangming Wen; Yaolong Chen; Ernst-Bernhard Kley, Editor(s)

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