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Journals and Conferences
We demonstrate strong coupling between a mid-infrared perfect absorber and a molecular absorption resonance embedded in our absorber structure. Anti-crossing behavior is demonstrated as the perfect absorber resonance is tuned through the molecular absorption line, both experimentally and numerically, and is described analytically using a simple coupled… (More)
We experimentally demonstrate epsilon-near-zero “photonic wires” supporting optical modes with effective wavelengths 10 times larger than the light's free space wavelength and improved propagation lengths. Design, fabrication, and characterization of the wires will be discussed.
We demonstrate enhanced light funneling through subwavelength features at optical frequencies using an epsilon near zero (ENZ) material layer. Transmission through a subwavelength slit filled with the epsilon near zero material is characterized.
We present numerical and analytical studies of the nonlocal optical response for plasmonic nanorod metamaterials. Dispersion of photonic modes has been studied and an analytical description of the nonlocal effective permittivity has been developed.
We present a numerical analysis of low diffracting states in plasmonic crystals formed by PMMA guides on Au substrate and develop an analytical description of this phenomenon.
THz ellipsometry with broadband THz pulses reveals anisotropic THz responses from closely packed, vertically grown CNTs. Non-negligible conductivity in a direction normal to the CNT axis indicates carrier transport between adjacent CNTs.
We have extensively investigated heavily doped semiconductors as potential plasmonic metals at long wavelengths. The ability to control the doping level in a semiconductor material, both III-V's (InAs/InSb) and Silicon, allows for control of the metal's optical properties, and adds an intriguing additional controllable parameter to the design of plasmonic… (More)
nanotubes M. J. Paul, N. A. Kuhta, J. L. Tomaino, A. D. Jameson, L. P. Maizy, T. Sharf, N. L. Rupesinghe, K. B. K. Teo, S. Inampudi, V. A. Podolskiy, E. D. Minot, and Yun-Shik Lee Department of Physics, Oregon State University, Corvallis, Oregon 97331-6507, USA AIXTRON Ltd., Buckingway Business Park, Anderson Road, Swavesey, Cambridge CB24 4FQ, United… (More)
We demonstrate a mid-infrared perfect absorber fabricated only from highly-doped semiconductors. A strong (>98%) absorption resonance is observed which is effectively independent of lateral geometry, but highly dependent on the vertical profile.
We present theoretical, numerical, and experimental analysis of optical density of states in plasmonic nanowire metamaterials. Averaged Purcell factors of the order of 30, attributed to nonlocal electromagnetic response of metamaterials, are reported.