Mode crossing induced soliton frequency comb generation in high-Q yttria-stabilized zirconia crystalline optical microresonators  

作　　者：Guoping Lin Tang Sun 

机构地区：[1]Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System,School of Science,Harbin Institute of Technology,Shenzhen 518055,China [2]Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

出　　处：《Photonics Research》2022年第3期731-739,共9页光子学研究（英文版）

基　　金：Science,Technology and Innovation Commission of Shenzhen Municipality(JCYJ20200109112805990).

摘　　要：We demonstrate for the first time,to the best of our knowledge,the fabrication of high-Q crystalline optical microresonators from cubic yttria-stabilized zirconia(YSZ).Intrinsic Q factors up to 80 million are obtained,indicating an upper bound absorption coefficient of 0.001cm^(−1) for YSZ crystals at the telecom wavelength.Through laser-scanned spectroscopy on a few-mode YSZ microresonator with a radius of 300μm,we find that the mode crossing effect in the case of weak coupling can induce a repelling disruption of free spectral range values between transverse mode families.Generation of soliton and soliton crystals in such a YSZ microcomb platform operated in the normal dispersion regime is observed.A breathing comb behavior is also reported.Our finding has enriched comb generation platforms with potential multidisciplinary capabilities linked to properties of YSZ crystals in superconducting films and sensors.

关 键 词：CRYSTALLINE SOLITON MODE 

分 类 号：TN751.2[电子电信—电路与系统]