Enhanced optical transmission through a metallic slit covered with a nanostrip and surrounded by corrugations

Guangyuan Li; Fan Lu; Zhen Meng; Anshi Xu

doi:10.1117/12.904002

28 November 2011 Enhanced optical transmission through a metallic slit covered with a nanostrip and surrounded by corrugations

Guangyuan Li, Fan Lu, Zhen Meng, Anshi Xu

Author Affiliations +

Proceedings Volume 8308, Optoelectronic Materials and Devices VI; 83080Y (2011) https://doi.org/10.1117/12.904002
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

We theoretically investigate the optical transmission through a subwavelength slit covered with a nanostrip and surrounded by corrugations in a metal film. Simulations results show that with a nanostrip on top of the slit, the optical transmission efficiency through the slit surrounded by grooves is greatly enhanced for various angles of incidence compared with the structure without the nanostrip. The nanostrip should be thick enough to result in an air nanocavity with high Q value and enhanced transmission efficiency.

Citation Download Citation

Guangyuan Li, Fan Lu, Zhen Meng, and Anshi Xu "Enhanced optical transmission through a metallic slit covered with a nanostrip and surrounded by corrugations", Proc. SPIE 8308, Optoelectronic Materials and Devices VI, 83080Y (28 November 2011); https://doi.org/10.1117/12.904002

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