Interference of surface plasmon polaritions controlled by the phase of incident light
Xi-Feng Ren, Guo-Ping Guo, Yun-Feng Huang, Zhi-Wei Wang, Pei Zhang and, Guang-Can Guo
TL;DR
This paper demonstrates control over surface plasmon polariton interference patterns by manipulating the phase of incident light, enabling precise modulation of plasmonic interactions in optical transmission.
Contribution
It introduces a method to control SPP interference via incident light phase, advancing plasmonic manipulation techniques.
Findings
Phase transfer from incident light to SPPs confirmed
Interference patterns modulated by phase difference
Bright and dark stripe patterns observed in SPPs
Abstract
Interference patterns of surface plasmon polaritons(SPPs) are observed in the extraordinary optical transmission through subwavelength holes in optically thick metal plate. It is found that the phase of incident light can be transferred to SPPs. We can control the destructive and constructive interference of SPPs by modulating the relative phase between two incident beams. Using a slightly displaced Mach-Zehnder interferometer, we also observe a SPPs interference pattern composed of bright and dark stripes.
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