Long-range optical trapping and binding of microparticles in hollow-core photonic crystal fibre  

作　　者：Dmitry S.Bykov Shangran Xie Richard Zeltner Andrey Machnev Gordon K.L.Wong Tijmen G.Euser Philip St.J.Russell 

机构地区：[1]Max Planck Institute for the Science of Light,Staudtstr.2,91058 Erlangen,Germany [2]Department of Physics,University of Erlangen-Nuremberg,91058 Erlangen,Germany [3]NanoPhotonics Centre,Cavendish Laboratory,University of Cambridge,Cambridge CB30HE,UK

出　　处：《Light(Science & Applications)》2018年第1期865-871,共7页光（科学与应用)（英文版）

基　　金：supported by Max Planck Society.R.Z.acknowledges funding from the Cluster of Excellence“Engineering of Advanced Materials”at the Friedrich-Alexander University in Erlangen,Germany.

摘　　要：Optically levitated micro-and nanoparticles offer an ideal playground for investigating photon–phonon interactions over macroscopic distances.Here we report the observation of long-range optical binding of multiple levitated microparticles,mediated by intermodal scattering and interference inside the evacuated core of a hollow-core photonic crystal fibre(HC-PCF).Three polystyrene particles with a diameter of 1μm are stably bound together with an inter-particle distance of~40μm,or 50 times longer than the wavelength of the trapping laser.The levitated boundparticle array can be translated to-and-fro over centimetre distances along the fibre.When evacuated to a gas pressure of 6 mbar,the collective mechanical modes of the bound-particle array are able to be observed.The measured interparticle distance at equilibrium and mechanical eigenfrequencies are supported by a novel analytical formalism modelling the dynamics of the binding process.The HC-PCF system offers a unique platform for investigating the rich optomechanical dynamics of arrays of levitated particles in a well-isolated and protected environment.

关 键 词：optical SCATTERING FIBRE 

分 类 号：TN2[电子电信—物理电子学]