Transient surface plasmon polariton launched by a metal subwavelength slit scattering

Yann Gravel; Yunlong Sheng

doi:10.1117/12.825682

2 September 2009 Transient surface plasmon polariton launched by a metal subwavelength slit scattering

Yann Gravel, Yunlong Sheng

Proceedings Volume 7395, Plasmonics: Nanoimaging, Nanofabrication, and their Applications V; 73950V (2009) https://doi.org/10.1117/12.825682
Event: SPIE NanoScience + Engineering, 2009, San Diego, California, United States

Abstract

We present a rigorous closed-form solution to complete the fundamental theory on the transient surface plasmons polaritons (SPP) present on a metal interface, in addition to the conventional long-range SPP, launched by scattering of a metal subwavelength slit. We demonstrate that the Maxwell equations solution includes a transit SPP with complexvalued Exponential Integral envelope by computing the Sommerfeld branch-cut integrals. Physically, the transient SPP is the cylindrical wave initially radiated from the source line, which losses its energy to pumping the long-range SPP mode in the propagation. Its varying damping rate is comparable with existing numerical and approximate results.

Citation Download Citation

Yann Gravel and Yunlong Sheng "Transient surface plasmon polariton launched by a metal subwavelength slit scattering", Proc. SPIE 7395, Plasmonics: Nanoimaging, Nanofabrication, and their Applications V, 73950V (2 September 2009); https://doi.org/10.1117/12.825682

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