Journal
OPTICS EXPRESS
Volume 17, Issue 12, Pages 9543-9548Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.009543
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Funding
- National Basic Research Program [2007CB935300]
- NSFC [10774116, 60736041]
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Transmission enhanced dual-wavelength light beaming is realized by a dielectric-metal-dielectric structure. Guided-mode resonance theory is used on the dielectric grating flanked single nanoslit in an optically thick metal to predict the original structure parameters for transmission enhanced dual-wavelength (442 nm and 633 nm) light beaming. Finite-difference time-domain numerical simulations confirm the theoretical prediction and demonstrate that the normalized-to-area transmittance of 10.8 and 14.7 and beaming angle of 2.40 degrees and 2.65 degrees for 442 nm and 633 nm, respectively, are achieved with a single structure, suggesting the potential applications of such structures in optical data storage, nanoscale wavelength multiplexing, directional light sources and emitters. (C) 2009 Optical Society of America
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