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9 October 2012 Three-dimensional light manipulation by plasmonic nanostructure
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Abstract
Nanobump structures are fabricated on the gold thin film by femtosecond laser direct writing (fs-LDW) technique. The height and diameter of the gold nanobump are about 30nm, and 400 nm, respectively. The scattering light of surface plasmon wave radiated from a nanobump is observed using a total internal reflection microscopy. A quarter-circle structure composed of nanobumps is designed and produced to manipulate scattering light into specific pattern: The focusing and diverging of the quarter circular structure in three dimensional space are demonstrated. The polarization properties of focusing spot are also examined.
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Chia Ming Chang, Hung-Kuei Tsai, Ming Lun Tseng, Bo Han Chen, Cheng Hung Chu, Hsin Wei Huang, Ding-Wei Huang, Chien-Jang Wu, and Din Ping Tsai "Three-dimensional light manipulation by plasmonic nanostructure", Proc. SPIE 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X, 84572P (9 October 2012); https://doi.org/10.1117/12.930330
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