Study on the composite Nd:YAG crystal by laser micro-Raman spectroscopy

作     者：SUN Dun-lu ZHANG Qing-li WAN Song-ming JIANG Hai-he YIN Shao-tang 

作者机构：Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences HeFei 230031 China 

出 版 物：《Optoelectronics Letters》 (光电子快报（英文版）)

年 卷 期：2007年第3卷第6期

页      面：441-443页

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China (No60478025 50472104) 

主　　题：晶体生长 Nd:YAG 物理性质 光谱 激光 

摘      要：The composite Nd：YAG crystal with undoped YAG end caps was fabricated by thermal bonding technique. Scanning electron microscopy （SEM） result shows that the width of the bonded interface was about 0.5 lain. The laser micro-Raman was used to study the bonded interface of the composite crystal. The results of Raman spectra and the bonded interface image indicate that the undoped YAG and Nd：YAG crystals have been well bonded together. Furthermore, it can be drawn that the structure and the composition of the bonded interface are the same as the undoped YAG crystal, and that the Nd^3＋ ions do not enter the bonded interface and the YAG side. This property is advantageous to decrease the thermal effect of the boned interface and to improve the laser stability.