Design and preparation of multilayer optical coatings for laser crystal Nd：YVO4 and KTP  

作　　者：姜玉刚 刘华松 王利栓 姜承慧 季一勤 羊亚平 

机构地区：[1]Key laboratory of advanced micro-structure materials, Ministry of Education, Department of Physics, Tonffji University, Shanghai 200092, China [2]Tianjin Key Laboratory of Optical Thin Film, Tianjin Jinhang Institute of Technical Physics, Tianjin 300192, China [3]National Key Laboratory of Science and Technology on Tunable Laser, Institute of Optical-Electronics, Harbin Institute of Technology, Harbin 150080, China

出　　处：《Chinese Optics Letters》2013年第13期116-118,共3页中国光学快报（英文版）

摘　　要：Design and preparation of multilayer optical coatings are investigated on laser crystal Nd：YVO4, YVO4, and frequency doubling crystal KTP substrate. Multilayer optical coatings are deposited on one surface of the crystals using the ion beam sputtering technique, and the other surface is coated with a single SiO2 as protective layer. For the YVO4 crystal after coating, the reflectivity at 1 064 and 532 nm are greater than 99.9% and 99.8%, respectively, and the transmissivity at 808 nm is greater than 91.5%. For the KTP crystal after coating, the reflectivity at 1064 nm is greater than 99.95%, and the transmissivity at 532 nm is greater than 99.5%. After thermal annealing, the transmissivity can be improved. The obtained coated crystals can be used in high Dower solid-state lasers.Design and preparation of multilayer optical coatings are investigated on laser crystal Nd：YVO4, YVO4, and frequency doubling crystal KTP substrate. Multilayer optical coatings are deposited on one surface of the crystals using the ion beam sputtering technique, and the other surface is coated with a single SiO2 as protective layer. For the YVO4 crystal after coating, the reflectivity at 1 064 and 532 nm are greater than 99.9% and 99.8%, respectively, and the transmissivity at 808 nm is greater than 91.5%. For the KTP crystal after coating, the reflectivity at 1064 nm is greater than 99.95%, and the transmissivity at 532 nm is greater than 99.5%. After thermal annealing, the transmissivity can be improved. The obtained coated crystals can be used in high Dower solid-state lasers.

关 键 词：Nd YVO4 KTP晶体 激光晶体 光学镀膜 制备 设计 YVO4晶体 光学涂层 

分 类 号：TN248.1[电子电信—物理电子学] TN244