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Phase‐controlled directional switching of surface plasmon polaritons via beam interference
Author(s) -
Lee SeungYeol,
Lee Wooyoung,
Lee Yohan,
Won JunYeon,
Kim Joonsoo,
Lee IlMin,
Lee Byoungho
Publication year - 2013
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201200089
Subject(s) - surface plasmon polariton , optics , interference (communication) , wavelength , beam (structure) , phase (matter) , surface plasmon , plasmon , optical switch , beam steering , enhanced data rates for gsm evolution , materials science , modulation (music) , physics , optoelectronics , telecommunications , acoustics , computer science , channel (broadcasting) , quantum mechanics
A novel method for switching the direction of surface plasmon polarition (SPP) launching is proposed. The principle behind the switching mechanism is based on the relative phase difference between the reference beam and the control beam. Selective guidance of the direction of SPP can be explained by the composition of the charge parity that is induced near the slit edge, which is caused by interference created by two incident beams. The switching of SPP launching direction could be implemented by simple phase modulation of the control beam when the slit parameters satisfy the specific conditions at the designed specific wavelength. An experimental demonstration, in good agreement with numerical results, shows that our configuration of SPP switching can be operated by a quite simple interaction.