Simulation and experiment on laser-heated pedestal growth of chromium-doped yttrium aluminum garnet single-crystal fiber

被引：7

作者：

Chang, Chun-Lin ^{[2
]}

Huang, Sheng-Lung ^{[2
,3
]}

Lo, Chia-Yao ^{[4
]}

Huang, Kuang-Yao ^{[2
]}

Lan, Chung-Wen ^{[5
]}

Cheng, Wood-Hi ^{[6
]}

Chen, Peng-Yi ^{[1
]}

机构：

[1] Meiho Univ, Dept Gemol, Pingtung 91202, Taiwan

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

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

[4] Natl Taiwan Ocean Univ, Inst Optoelect Sci, Keelung 20224, Taiwan

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

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

来源：

JOURNAL OF CRYSTAL GROWTH | 2011年 / 318卷 / 01期

关键词：

Heat transfer; Fluid flows; Laser heated pedestal growth; Single crystal growth; Yttrium compounds; INTERFACE SHAPES; CR4+-YAG; SEGREGATION; GENERATION; EMISSION; FLOW; ND;

D O I：

10.1016/j.jcrysgro.2010.11.035

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The laser-heated pedestal growth (LHPG) of chromium-doped yttrium aluminum garnet (Cr:YAG) single-crystal fibers in < 1 1 1 > direction was investigated via a two-dimensional (2D) simulation which is verified by experimental observations on the interface shapes. Radial dopant profiles at the growth front in simulations were consistent with that of the grown crystal fibers in ex-situ measurements. The concentration level and distribution compared to the corresponding fluid flow and heat transfer were reported to visualize the phenomena that cannot be observed easily. It is viable to adjust the shape of air/melt interface, the distribution of mass flow rate, and especially the shape of growth front for acquiring a desirable radial dopant profile. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：674 / 678

页数：5

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