Plasmon waveguide for optical far/near-field conversion

Yatsui, T.; Kourogi, M.; Ohtsu, M.
December 2001
Applied Physics Letters;12/31/2001, Vol. 79 Issue 27, p4583
Academic Journal
A plasmon waveguide was designed and fabricated using a metal-coated silicon wedge structure that converts propagating far-field light to the near field. Illumination (λ=830 nm) of the waveguide (plateau width 150 nm) caused transverse magnetic plasmon-mode excitation. Use of a near-field microscope allowed us to determine its beam width and propagation length as 150 nm and 2.5 μm, respectively. © 2001 American Institute of Physics.


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