Generation of subwavelength traps in the optical near field

Romain Quidant; P. Ghenuche; Goncal Badenes

doi:10.1117/12.555818

18 October 2004 Generation of sub-wavelength traps in the optical near field

Romain Quidant, P. Ghenuche, Goncal Badenes

Proceedings Volume 5514, Optical Trapping and Optical Micromanipulation; (2004) https://doi.org/10.1117/12.555818
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

We report the sub-wavelength patterning of the optical near-field by total internal reflection illumination of a regular array of resonant gold nano-particles. Under appropriate conditions, the in-plane coupling between localized surface plasmon fields gives rise to sub-wavelength light spots between the structures. Measurements performed with an Apertureless Scanning Near-Field Optical Microscope (ASNOM) show good agreement with theoretical predictions based on the Green dyadic method. This concept might offer a convenient way to elaborate extended optical trap landscapes for manipulation of sub-micrometer systems.

Citation Download Citation

Romain Quidant, P. Ghenuche, and Goncal Badenes "Generation of sub-wavelength traps in the optical near field", Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); https://doi.org/10.1117/12.555818

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