摘要
超高品质回音壁晶体微腔在非线性光学、相干光通信以及微波光子学等领域具有广阔的应用前景。改善表面粗糙度以降低散射损耗是提升氟化镁晶体微盘腔品质因子的有效途径。基于超精密机械加工法制备出亚纳米表面粗糙度的超光滑氟化镁晶体微盘腔,通过将锥形光纤耦合与腔内衰荡法相结合,测得氟化镁晶体微盘腔在1550 nm波段的品质因子Q值达到1.2×10^(9),这有助于推动我国超高品质回音壁晶体微腔领域的研究发展。
Ultra-high quality factor whispering gallery mode crystal microresonators have promising applications in nonlinear optics,coherent optical communication,and microwave photonics.Improving the surface roughness to reduce the scattering loss is an effective way to improve the quality factor of magnesium fluoride (MaF_(2)) crystal microdisk resonators.In this paper,we fabricated ultra-smooth MaF_(2) crystal microdisk resonators with sub-nanometer surface roughness based on ultra-precision machining method,and the quality factor Q of MaF_(2) crystal microdisk resonators in1550 nm band is up to 1.2×10^(9) by using the tapered fiber coupling combined with cavity ringdown method,which helps to promote the research development in the field of ultra-high quality whispering gallery mode crystal microresonators in China.
作者
戴键
候迎港
高司达
刘安妮
李鑫敏
徐坤
Dai Jian;Hou Yinggang;Gao Sida;Liu Anni;Li Xinmin;Xu Kun(State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China;School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2022年第19期181-185,共5页
Acta Optica Sinica
基金
国家自然科学基金(61971065)。
关键词
光学器件
回音壁模式
氟化镁晶体微盘腔
表面粗糙度
品质因子
optical devices
whispering gallery mode
magnesium fluoride crystal microdisk resonators
surface roughness
quality factor
