A novel fiber optical tweezers with FZP structures on fiber end-face

Fenghuan Hao; Rui Wang; Jia Wang

doi:10.1117/12.837927

1 December 2009 A novel fiber optical tweezers with FZP structures on fiber end-face

Fenghuan Hao, Rui Wang, Jia Wang

Proceedings Volume 7507, 2009 International Conference on Optical Instruments and Technology: Optical Trapping and Microscopic Imaging; 75070K (2009) https://doi.org/10.1117/12.837927
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

A novel fiber optical tweezers is proposed to trap subwavelength particles in 3-dimension, the Fresnel Zone Plate (FZP) structure is designed with a high numerical aperture (N.A.) and prepared on the flat fiber end face. According to the core area of 633nm single mode polarization-maintaining fibers, a FZP structure with three zones is designed. The transmitted field distribution is simulated by Finite-difference time-domain (FDTD) method, and the optical force on a 500 nm diameter polystyrene particle in water is calculated from Maxwell Stress Tensor (MST). The results indicate that the FZP structure can generate a subwavelength focal spot and the optical force can trap subwavelength particle in 3D. With focused ion beam (FIB) etching and depositing system, a fiber optical tweezers with the designed FZP structure is fabricated, which could be used widely due to its easy-operating and capability to manipulate subwavelength particles in 3D.

Citation Download Citation

Fenghuan Hao, Rui Wang, and Jia Wang "A novel fiber optical tweezers with FZP structures on fiber end-face", Proc. SPIE 7507, 2009 International Conference on Optical Instruments and Technology: Optical Trapping and Microscopic Imaging, 75070K (1 December 2009); https://doi.org/10.1117/12.837927

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