title: Photon-phonon Interaction in a Microfiber Induced by Optical and Electrostrictive Forces.
abstract: Stimulated Brillouin scattering (SBS) via electrostrictive force is a fundamental interaction between light and sound which limits the power in conventional optical fibers. The emergence of optical microfibers with subwavelength diameter, ultralight mass and an intense light field, provides a new platform for photon-phonon coupling, resulting in the radiation pressure mediated contribution of SBS. This study examines the optomechanical system in cylindrical coordinates, reveals the theoretically radiation pressure induced analogous, and demonstrates contrary effect compared with electrostrictive force in solid or hollow silica microfibers. The finding shows that the photon-phonon coupling, which is related to SBS, can be suppressed in a solid microfiber, and even be completely cancelled in a hollow microfiber.
authors.affiliation: National Laboratory of Solid State Microstructures, and College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Yun-Chao
authors.initials: YC
authors.lastname: Shi
authors.affiliation: National Laboratory of Solid State Microstructures, and College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Luo
authors.affiliation: National Laboratory of Solid State Microstructures, and College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Fei
authors.initials: F
authors.lastname: Xu
authors.affiliation: National Laboratory of Solid State Microstructures, and College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Yan-Qing
authors.initials: YQ
authors.lastname: Lu