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Design of plasmon fields using nano-fabrication techniques and femtosecond light pulses

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Abstract

Light harvesting and local field enhancements are the key role of local surface plasmon resonances (LSPRs). Metal nano structures, such as metal nano particles and nano rods, pairs of particles, aggregated particles, and complicated nano patterns engineered by electron-beam lithography, are widely used for this purpose. Tunings of resonance frequencies and lifetimes of LSPR eigenmodes are essential to obtain the maximum efficiency of the field enhancements. Designs and fabrications of plasmonic structures require nanometer-scale precision. Because surface plasmons are confined and possess the maximum intensity at metal-insulator interfaces or at metal-metal gaps, SP fields are sensitively affected by local inhomogeneity and fluctuations.

© 2013 Japan Society of Applied Physics, Optical Society of America

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