Nanostructure formation of double-clad Cr4+:YAG crystal fiber grown by co-drawing laser-heated pedestal
Journal
Journal of Crystal Growth
Journal Volume
289
Journal Issue
2
Pages
515-519
Date Issued
2006
Author(s)
Lin, Yen-Sheng
Lai, Chien-Chih
Huang,Kuang-Yao
Chen, Jian-Cheng
Lo, Chia-Yao
Chang, Tao-Yuan
Ji, Jiun-Yu
Shen, Pouyan
Abstract
The microstructures of double-clad Cr4+:YAG crystal fibers grown using a co-drawing laser-heated pedestal growth method were studied by high-resolution transmission electron microscopy and photoluminescence spectroscopy. The core is single-crystalline garnet elongated in [1 1 1] direction, whereas inner cladding a composite of Cr3+:γ-Al 2O3 nanocrystals in Cr4+: silicate glass due to YAG/SiO2 inter-diffusion and a high crystal-field-stabilization energy of Cr3+ attained in close packed oxide. Cr4+ fluorescence intensity decreases and shifts to lower wavelength for the inner cladding in comparison with the core. © 2006 Elsevier B.V. All rights reserved.
Subjects
A1. Interdiffusion; B1. Cr+4:YAG crystal fiber; B1. Nanocrystal
SDGs
Other Subjects
Chromium; Composite materials; Garnets; Microstructure; Nanostructured materials; Photoluminescence; Positive ions; Silica; Transmission electron microscopy; Yttrium compounds; Cr+4: YAG crystal fiber; Interdiffusion; Nanostructure formation; Crystal growth
Type
journal article
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