On-chip ultraviolet second-harmonic generation in lithium-tantalate thin film microdisk  

作　　者：薛苗 颜雄硕 吴江威 葛睿 袁汀格 陈玉萍 陈险峰 Miao Xue;Xiongshuo Yan;Jiangwei Wu;Rui Ge;Tingge Yuan;Yuping Chen;Xianfeng Chen(State Key Laboratory of Advanced Optical Communication Systems and Networks,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Research Center for Quantum Sciences,Shanghai 201315,China;Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China)

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China [2]Shanghai Research Center for Quantum Sciences,Shanghai 201315,China [3]Collaborative Innovation Center of Light Manipulations and Applications,Shandong Normal University,Jinan 250358,China

出　　处：《Chinese Optics Letters》2023年第6期89-93,共5页中国光学快报（英文版）

基　　金：supported by the National Key R&D Program of China(No.2019YFB2203501);the National Natural Science Foundation of China(Nos.12134009 and 91950107);Shanghai Municipal Science and Technology Major Project(2019SHZDZX01-ZX06);SJTU(No.21X010200828)。

摘　　要：The compact and reliable ultraviolet[UV]source has attracted remarkable attention for its potential use in optical measurement systems,high-density optical storage,and biomedical applications.We demonstrate ultraviolet generation by frequency doubling in a lithium-tantalate-on-insulator[LTOI]microdisk via modal phase matching.The 50-μm-diameter microdisk was milled by a focused ion beam[FIB]and followed by chemo-mechanical polishing[CMP]to smooth the disk surface and edge,and the Q-factor reaches 2.74×10~5in the visible band.On-chip UV coherent light with a wavelength of384.3 nm was achieved,which shows great promise for using LTOIs in integrated ultraviolet source platforms.

关 键 词：lithium-tantalate thin film ultraviolet light second-harmonic generation 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TN25[电子电信—物理电子学]