Experiment and simulation on interface shapes of an yttrium aluminium garnet miniature molten zone formed using the laser-heated pedestal growth method for single-crystal fibers

被引：14

作者：

Chen, P. Y. ^{[2
]}

Chang, C. L. ^{[1
]}

Huang, K. Y. ^{[1
]}

Lan, C. W. ^{[3
]}

Cheng, W. H. ^{[2
]}

Huang, S. L. ^{[1
,4
]}

机构：

[1] Natl Taiwan Univ, Inst Photon & Optoelect, Taipei 10617, Taiwan

[2] Natl Sun Yat Sen Univ, Dept Photon, Kaohsiung 80424, Taiwan

[3] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan

[4] Natl Taiwan Univ, Dept Elect Engn, Taipei 10617, Taiwan

来源：

JOURNAL OF APPLIED CRYSTALLOGRAPHY | 2009年 / 42卷

关键词：

RADIAL DOPANT SEGREGATION; FLUID-FLOW; THERMOCAPILLARY FLOW; MAGNETIC-FIELDS; SILICON GROWTH; CONVECTION; GENERATION; STABILITY; SAPPHIRE; ND;

D O I：

10.1107/S0021889809017361

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A two-dimensional simulation was employed to study the melt/air and melt/solid interface shapes of the miniature molten zone formed in a laser-heated pedestal growth (LHPG) system. Using a non-orthogonal body-fitting grid system with the control-volume finite-difference method, the interface shape can be determined both efficiently and accurately. During stable growth, the dependence of the molten-zone length and shape on the heating CO2 laser is examined in detail under both the maximum and the minimum allowed powers with various growth speeds. The effect of gravity on the miniature molten zone is also simulated and the possibility of horizontally oriented LHPG is revealed. Such a horizontal system is good for the growth of long crystal fibers.

引用

页码：553 / 563

页数：11

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