https://scholars.lib.ntu.edu.tw/handle/123456789/357926
標題: | Study on the core/cladding interface in Cr: YAG double-clad crystal fibers grown by the codrawing laser-heated pedestal growth method | 作者: | Lai, C.-C. Lin, Y.-S. Huang, K.-Y. SHENG-LUNG HUANG |
公開日期: | 2010 | 卷: | 108 | 期: | 5 | 來源出版物: | Journal of Applied Physics | 摘要: | This study reports, for the first time, atomic-scale high-resolution transmission electron microscope (HRTEM) microstructure studies on the interface between the crystal core and polycrystalline inner cladding and strain relaxation mechanism of high-quality Cr:YAG double-clad crystal fibers grown by a codrawing laser-heated pedestal growth method. HRTEM analysis indicates that the core has high crystallinity and a sharp core/inner-cladding interface, exhibiting coherent planes with a preferred orientation relationship to the γ-Al2 O3 nanocrystals in the inner cladding. The slightly distorted γ -Al2 O3 lattice facilitates the release of residual strain, and eliminates misfit dislocation at the interface. Lattice strain analysis and image processing reveal a ∼18.2 nm layer near the interface for strain relaxation. © 2010 American Institute of Physics. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-77956811028&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/357926 |
ISSN: | 00218979 | DOI: | 10.1063/1.3467517 | SDG/關鍵字: | Atomic scale; Cladding interfaces; Crystal fiber; Double-clad; High crystallinity; High quality; High-resolution transmission electron microscopes; HRTEM analysis; Inner cladding; Laser heated pedestal growth; Lattice strain analysis; Misfit dislocations; Polycrystalline; Preferred orientations; Residual strains; Strain relaxation mechanism; YAG; Chromium; Crystal whiskers; Dislocations (crystals); Image processing; Strain control; Strain relaxation; Transmission electron microscopy; Crystal microstructure |
顯示於: | 光電工程學研究所 |
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