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The SHG in nonelectrically poled NLO polymers was investigated at Surface Plasmon resonance. The SHG conversion efficiency in the polymer-coated Ag films was more than 10 times as high as that in the non-coated ones.
We experimentally demonstrate nanoscale thermal mapping of light induced heat in photonic and plasmonic devices using a thermocouple AFM tip. Numerical simulations results and nanoscale temperature measurements are presented and discussed.
We present a review on the use of molecular nanomotors to probe the near field of metal nanoparticles. Both the experimental and theoretical point of view will be presented and discussed.
We rigorously determine the effect of parasitic loss on the achievable absorption enhancement in nanophotonic, plasmonic light trapping schemes. We show that, even in the presence of parasitic loss, opportunities exist to exceed conventional limits.
The metal influence on light emitters has been studied for more than twenty years in semiconductor light emitters. A critical feature is reliance on the correct electromagnetic boundary conditions to understand and predict the performance of either lasers or spontaneous light emitters for which the metal may influence the emission properties. Here we show that nearly (all) recent studies of metal-coupled...
Plasmonics is an exploding new field of science and technology in which the flow of light can be molded at the nanoscale using metallic nanostructures. This newly found ability is rapidly impacting every facet of optics and photonics and is enabling a myriad of exciting new technologies. Semiconductor nanophotonics has also seen tremendous recent progress in the development of high performance light...
The high-resolution THz amplitude spectrum as well as the phase shift of the reflection of a thin metal hole-array are measured, and an unexpected Wood's anomaly dip, as well as an unusual step-like 2π phase shift are observed.
The wavelengths and amplitudes of narrowband polarized cladding mode resonances in tilted fiber Bragg gratings provide high-Q probes of the anisotropic optical properties of various metal and semiconducting nanoparticle coatings and of their surroundings.
We demonstrate the resonant absorption of visible light with plasmonic nanocavity arrays fabricated by resistless nanoimprinting in metal (RNIM). The nanocavities are efficiently excited using normally incident light, and numerical simulations confirm the experimental data.
We describe a new Facility effort utilizing high brightness Fourier transform methods, including measurements of transmission, reflection, and photoconductivity spectra, to characterize nanomaterial-based model photovoltaic devices.
We employ multiphoton photoemission to study resonant and nonresonant transitions between the occupied and unoccupied surface states at noble metal surfaces. At resonance, nondispersive bands give evidence for the existence of transient excitons at metal surfaces.
We present a theoretical study of coherently coupled, stacked planar metal/insulator films. Our analysis shows that resonant coupling of plasmon and waveguide modes results in strongly dispersive, nonmonotonic reflectance, suitable for enhanced plasmonic sensing applications.
We show that interplay of different loss mechanisms leads to a minimization of overall loss in a semiconductor plasmon polariton nanolaser. A practical design is proposed with a total volume of 1.5 × 10−4 λ03.
Precision processing of a variety of materials, ranging from metals to dielectrics, has been demonstrated with a high degree of reliability and repeatability, at industrially feasible processing speeds.
We present rare-earth monopnictide alloys as tunable mid-infrared epitaxial semimetals for plasmonics. The La1−xLuxAs system combines high carrier concentrations, epitaxial compatibility with many III-V substrates, and tunable plasma reflection edge throughout much of the mid-infrared.
I will describe our studies of ultrafast light-induced processes in semiconductor nanocrystals and metal nanoparticles, including acoustic vibrations in gold nanoparticles and charge separation in metal clusters and semiconductor nanocrystal heterostructures.
We theoretically demonstrate, an order of magnitude enhancement in propagation length of SPPs (visible wavelength) along a metal-phaseonium interface via quantum coherence. Such coherence effects hold promise for quantum control in the field of nanophotonics.
Because of the ability to concentrate light into subwavelength dimensions, plasmonic nanostructures have become a new frontier of nano-photonics, with promising applications for energy transport and conversion. In this work, we experimentally measure the near field intensity distribution of light squeezed through a subwavelength plasmonic hole in a thin metal film. Both transmission coefficient and...
The responsivity of a monolayer graphene photodetector based on the photo-thermoelectric effect was measured at room temperature for dc, terahertz, and optical frequencies and found to be approximately 81, 188, and 18 V/W respectively.
Nearly perfect 90-degree bends and T-splitters are demonstrated in plasmonic nano-coaxial waveguides at the telecommunication wavelength, with bending and splitting efficiencies greater than 97% and 99%, respectively.
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