摘要
We investigate the microscopic optical force density distributions respectively inside a subwavelength-diameter(SD)fiber with flat endface and inside one with oblique endface by using a finite-difference time-domain(FDTD) method.Optical force density distributions at the fiber endfaces can now be readily available. The complete knowledge of optical force density distributions not only reveal features regarding the microscopic near-field optomechanical interaction, but also provide straightforward explanations for the sideway deflections and other mechanical motions. Our results can provide a useful reference for better understanding the mechanical influence when light transports in a microscale or nanoscale structure and for developing future highly-sensitive optomechanical devices.
We investigate the microscopic optical force density distributions respectively inside a subwavelength-diameter(SD)fiber with flat endface and inside one with oblique endface by using a finite-difference time-domain(FDTD) method.Optical force density distributions at the fiber endfaces can now be readily available. The complete knowledge of optical force density distributions not only reveal features regarding the microscopic near-field optomechanical interaction, but also provide straightforward explanations for the sideway deflections and other mechanical motions. Our results can provide a useful reference for better understanding the mechanical influence when light transports in a microscale or nanoscale structure and for developing future highly-sensitive optomechanical devices.
作者
张运原
虞华康
王向珂
吴婉玲
谷付星
李志远
Yun-Yuan Zhang;Hua-Kang Yu;Xiang-Ke Wang;Wan-Ling Wu;Fu-Xing Gu;Zhi-Yuan Li(School of Physics and Optoelectronics,South China University of Technology,Guangzhou 510641,China;Shanghai Key Laboratory of Modern Optical System,Engineering Research Center of Optical Instrument and System(Ministry of Education),University of Shanghai for Science and Technology,Shanghai 200093,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.11604230 and 11434017)
the Guangdong Provincial Innovative and Entrepreneurial Research Team Program,China(Grant No.2016ZT06C594)
the National Key Research and Development Program of China(Grant No.2018YFA 0306200)