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Optomechanically Induced Mode Transition and Spectrum Enhancement in a Microresonator System
Author(s) -
Gao YongPan,
Wang ZhongXiao,
Liu XiaoFei,
Wang TieJun,
Wang Chuan
Publication year - 2019
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.201800419
Subject(s) - optomechanics , physics , resonator , terahertz radiation , nanophotonics , bandwidth (computing) , cavity quantum electrodynamics , optoelectronics , quantum optics , photonics , optical cavity , optics , coupling (piping) , microwave , optical microcavity , context (archaeology) , quantum , materials science , telecommunications , quantum mechanics , open quantum system , computer science , laser , paleontology , metallurgy , biology
Optomechanics describes the interconnection between the terahertz optical field and mechanical microwave field, making it appealing in the context of nanophotonics and quantum information science. Here, the optomechanically induced mode transition and spectrum enhanced phenomenon in an optomechanical microcavity system are studied. An optical filter that is limited by the bandwidth of the mechanical mode is built. The analytical model is presented by considering a microresonator system which supports two electromagnetic modes and a single mechanical mode. Through the filtering of mechanical resonator, the optical spectral width becomes similar to the mechanical resonator bandwidth which can go beyond the limit of the cavity quality factor. It is found that the transition between the optomechanically induced transparency and the optomechanically induced absorption can be observed by tuning the coupling between the microresonator and the waveguide. Moreover, the controllable nonreciprocal excitation of the system can also be observed.