Removal of surface plasmon polariton eigenmodes degeneracy

Details Removal of surface plasmon polariton eigenmodes degeneracy Removal of surface plasmon polariton eigenmodes degeneracy

2007-03-26

arxiv.org/abs/physics/0703230v2

Appl.Phys.B 89 257(2007)

Physics

Optics

7 pages, 5 figures

Scientific paper

10.1007/s00340-007-2807-3

The effect of the tilt angle of metal film on the transmissivity of subwavelength holes in optically thick metal film is investigated. The transmission efficiency is found can be highly dependent on the tilt angle. It is also found that when the input photons are polarized not along the eigenmode directions of surface plasmon polariton, a birefringent phenomenon is observed when the array with periodic of subwavelength holes is tilted. Linear polarization states can be changed to elliptical polarization states and a phase can be added between two eigenmodes. The phase is changed with the tilt angle. A model based on surface plasmon polariton eigenmodes degeneracy is presented to explain these experimental results.

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