Tuning Optical Discs for Plasmonic Applications
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We present simple physical and chemical procedures that allow tuning and modification of the topography of gratings present in optical storage discs into geometries optimal for grating coupled plasmon resonance excitation. After proper metal coating, the tuned surfaces exhibit sharp plasmon resonances that can be excited at wavelengths ranging from 260 nm to over 2.7 μm with relatively high quality factors. As an immediate exemplary application, use of such optimized gratings in aqueous medium for refractive index measurement is demonstrated.
KeywordsDiffraction gratings Surface plasmons Plasmonics
This work is supported by TUBITAK under Project No. 106T348, 106G090, and 107T547. MB acknowledges support from the Turkish Academy of Sciences Distinguished Young Scientist Award (TUBA GEBIP). This work was performed at the UNAM-Institute of Materials Science and Nanotechnology, which is supported by the State Planning Organization of Turkey through the National Nanotechnology Research Center Project.
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