Dynamic control of optical transmission through a nano-slit using surface plasmons

S. Daniel, K. Saastamoinen, T. Saastamoinen, J. Rahomaki, A.T. Friberg, T.D. Visser

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

We demonstrate how the optical transmission by a directly illuminated, sub-wavelength slit in a metal film can be dynamically controlled by varying the incident beam's phase relative to that of a stream of surface plasmon polaritions which are generated at a nearby grating. The transmission can be smoothly altered from its maximum value to practically zero. The results from a simple model and from rigorous numerical simulations are in excellent agreement with our experimental results. Our method may be applied in all-optical switching.
Original languageEnglish
Pages (from-to)22512-22519
JournalOptics Express
Volume23
Issue number17
DOIs
Publication statusPublished - 2015

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