期刊
OPTICS LETTERS
卷 32, 期 18, 页码 2692-2694出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.32.002692
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资金
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1115903] Funding Source: National Science Foundation
The transmission of light through a thin Ag film with a periodic subwavelength hole array can be influenced by the presence of the externally applied magnetic field H. Using a three-dimensional finite element method, we show that the spectral locations of the transmission peak resonances can be shifted by varying the magnitude and direction of the H. The transmission peaks have blueshift, and the higher the magnitude of H the larger the blueshift. The shift is due to the change of cavity resonance condition as a result of the magneto-induced anisotropy in the optical properties of the Ag film. Hence, high transmittance for any desired wavelength can be achieved by applying an appropriate H to the metallic film of optimized material and hole parameters. (c) 2007 Optical Society of America.
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