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We study the effect of partial phase compensation on a free-space relay-assisted quantum-key distribution system. Our analytical results demonstrate that the relay-assisted system outperforms the direct transmission even with partial phase compensation.
A semiconductor laser with active layer consisting of a patterned quantum dot lattice demonstrates evidence of miniband formation resulting from inter-dot coupling. Excited state lasing is thought to result from a phonon bottleneck-like effect.
We study a structure consisting of a gold disk array, an SiO2 spacer, and a gold film. We study the effect of spacer thickness on the anti-crossing between localized plasmons and surface plasmon polaritons.
We demonstrate transmission spectroscopy between a monostatic transceiver based on a wavelength-beam-combined quantum-cascade-laser array and a retroreflector placed at 35 meters.
We introduce periodic plasmonic waveguides which support a guided subwavelength slow-light mode over a very broad range of frequencies. The structure consists of a metal-dielectric-metal waveguide side-coupled to a periodic array of metal-dielectric-metal stub resonators.
We fabricated three-dimensional arrays of optical Yagi-Uda nano-antennas. Due to the high directivity of the array structure the incoming light is received efficiently at the resonant wavelength in the near-infrared (around λ = 1.3 μm).
Using a microfabricated zone plate array, we demonstrate detection of fluorescent beads at 12 locations along a serpentine microfluidic channel. Cross-correlations of the signals along the channel enable velocity dispersion measurements.
Two significant coherent combining solid state laser systems will be described. One approach uses a fiber optic amplifier array and the other uses 7 tiled slab amplifier chains. The first of these demonstrated very high efficiency and near perfect beam quality. The 2nd of these approaches reached a world record 105 kW of power CW.
We propose a new multi-wavelength High Contrast Grating VCSEL array, with an ultrabroad spectral range. The simple fabrication flow of this array is fully epitaxy compatible and requires no extra steps beyond a single-VCSEL process.
We demonstrate the rapid droplet mixing ability of the Light-Actuated Digital Microfluidics device. A 3×3 array of droplets with 9 different reagent mixing ratios have been successfully generated using a digital light projector.
We present an Electron Energy Loss Spectroscopy (EELS) study in a Scanning Transmission Electron Microscope (STEM) of individual Split-Ring Resonator (SRR). We show the possibility to map each plasmonic modes with a nanometric spatial resolution in the Near IR to UV spectral range.
A practical implementation of a 31.99Gbit/s DPSK CoWDM system using a 3-modulator array is compared to a 2-modulator odd/even configuration in terms of receiver sensitivity and phase influence on the crosstalk between the sub-carriers.
We demonstrate the fabrication of plasmonic nanostructures (rings, split rings, and other structures) by a process involving molding by soft lithography, thin film deposition, and mechanical sectioning (nanoskiving). This unique process is highly parallelizable and allows for the fabrication of nanostructures of multiple materials in the same plane and very high aspect ratio structures. We characterize...
We describe a scheme for far-field subwavelength fingerprinting in the mid-IR and THz bands. The approach relies on evanescent wave retrieval, mediated by scattering on a subwavelength nanostructure.
The first label-free LEAC biosensor immunoassay demonstration is reported. CMOS chips with integrated photoconductor arrays detected 150 kDa tuberculosis related antibodies and 18 kDa protein antigens. The limit of detection for thickness change was 120 pm.
We map out a transition from polycrystalline to amorphous photonic structures with decreasing short-range order. The photonic band gap decreases once the individual domains of ordered structure become too small for the gap formation.
We report measurement of the group index dispersion of the supermodes of a three channel array of strongly coupled silicon-on-insulator waveguides, and compare results with numerical simulations. We observe strong coupling-induced dispersion.
We demonstrate photomechanical actuation by measuring the variation of the diffracted orders in a free-standing nanopatterned diazonium-modified silk fibroin film by modulating a blue excitation light source.
We investigate the capacitance tuning of nanoscale split-ring resonators. An LC-model predicts a simple dependence of resonance frequency on slit aspect ratio. Experimental and numerical data follow the predictions of the LC-model.
Fundamentals of the three-dimensional spatial harmonic analysis (SHA) approach are reviewed, and the advantages of a fast-converging formulation versus the initial formulation are emphasized with examples using periodic plasmonic nanostructures.
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