Optical properties of thin metallic film/dielectric superlattices constrained by the size effect |
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Authors: | J -T Lue J -S Sheng |
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Institution: | (1) Department of Physics and Department of Electrical Engineering, National Tsing Hua University, Hsinchu, Taiwan, Republic of China |
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Abstract: | The dispersion relation of the 1D Bloch wave vector accompanied with an incident transverse electromagnetic wave on thin metallic film/dielectric superlattices is crucial to its optical properties. The interference of excited longitudinal plasmons between neighbouring metallic films induces a collective oscillation of the whole superlattice causing coupled plasmon polariton waves. A calculation of the optical reflectance manipulated by the size effect on the dielectric constant induces more allowable bands at <![ohgr](/content/rq53805nj6257777/xxlarge969.gif) as the specularity parameters p and q decrease, meanwhile the cut-off frequency for band rejection also shows a blue shift. |
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Keywords: | 78 66 – w 73 61 At 74 20 Dm |
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