Optical depolarization induced by arrays of subwavelength metal holes
Autor: | J. P. Woerdman, E. Altewischer, M. P. van Exter, Cyriaque Genet |
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Rok vydání: | 2005 |
Předmět: | |
Zdroj: | Physical Review B. 71 |
ISSN: | 1550-235X 1098-0121 |
DOI: | 10.1103/physrevb.71.033409 |
Popis: | We present a symmetry-based theory of the depolarization induced by subwavelength metal hole arrays. We derive the Mueller matrices of hole arrays with various symmetries (in particular square and hexagonal) when illuminated by a finite-diameter (e.g., Gaussian) beam. The depolarization is due to a combination of two factors: (i) polarization-dependent propagation of surface plasmons along the surface of the array and (ii) a spread of wave vectors in the incident beam. |
Databáze: | OpenAIRE |
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