Soliton microcomb generation by cavity polygon modes  

作　　者：Botao Fu Renhong Gao Ni Yao Haisu Zhang Chuntao Li Jintian Lin Min Wang Lingling Qiao Ya Cheng 

机构地区：[1]State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science,Shanghai Institute of Optics and Fine Mechanics(SIOM),Chinese Academy of Sciences(CAS),Shanghai 201800,China [2]Research Center for Frontier Fundamental Studies,Zhejiang Lab,Hangzhou 311100,China [3]Engineering Research Center for Nanophotonics&Advanced Instrument,Ministry of Education,School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China [4]School of Physical Science and Technology,ShanghaiTech University,Shanghai 200031,China [5]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [6]Shanghai Research Center for Quantum Sciences,Shanghai 201315,China [7]Hefei National Laboratory,Hefei 230088,China

出　　处：《Opto-Electronic Advances》2024年第8期6-14,共9页光电进展（英文）

基　　金：supports from National Key R&D Program of China(Grants No.2019YFA0705000,2022YFA1404600,2022YFA1205100);National Natural Science Foundation of China(Grants No.62122079,12192251,62235019,12334014,12134001,12104159,11933005);Innovation Program for Quantum Science and Technology(No.2021ZD0301403);Shanghai Municipal Science and Technology Major Project(2019SHZDZX01);Science and Technology Commission of Shanghai Municipality(No.23ZR1481800);the Youth Innovation Promotion Association of Chinese Academy of Sciences(Grant No.2020249);Engineering Research Center for Nanophotonics&Advanced Instrument,Ministry of Education,East China Normal University(No.2023nmc005)

摘　　要：Soliton microcombs,which require the hosting cavity to operate in an anomalous dispersion regime,are essential to integrate photonic systems.In the past,soliton microcombs were generated on cavity whispering gallery modes(WGMs),and the anomalous dispersion requirement of the cavity made by normal dispersion material was achieved through structural dispersion engineering.This inevitably degrades the cavity optical quality factor(Q)and increases pump threshold power for soliton comb generation.To overcome the challenges,here,we report a soliton microcomb excited by cavity polygon modes.These modes display anomalous dispersion at near-infrared while optical Q factors exceeding 4×10^(6) are maintained.Consequently,a soliton comb spanning from 1450 nm to 1620 nm with a record low pump power of 11 m W is demonstrated,a three-fold improvement compared to the state of the art on the same material platform.

关 键 词：thin-film lithium niobate nonlinear optics MICRORESONATORS 

分 类 号：O437[机械工程—光学工程]