Low-threshold laser from erbium-gain lithium niobate microcavity

作者：Li-Kun Chen,Yun-Feng Xiao

摘要：Integrated photonic circuits with nonlinear response are imperative in the boosting field of telecommunications and quantum networks [1].Among all conventional nonlinear materials,lithium niobate (LiNO_(3),LN) has drawn massive interest for its excellent performance inχ(^(2)) and commercialization compatibility.Thanks to the developed micromachining techniques,on-chip lithium niobate structures with subnanometer roughness are now achievable [2,3],making integrated devices like frequency doublers,transducers and filters into reality.Besides these passive photonic circuits,the laser source on the LN integrated circuit leaves absence.Rare earth erbium is a well-acknowledged doping particle that produces the C-band laser.Combining photonic integrated circuits with erbium can pave the way towards the LN-based chip scale microlaser,which is crucial and groundbreaking on the integration of light sources and various functioned devices.

发文机构：State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics Collaborative Innovation Center of Extreme Optics Peking University Yangtze Delta Institute of Optoelectronics

关键词：LASERlithiumROUGHNESS

分类号： TN2[电子电信—物理电子学]