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This paper presents a laser-assisted chemical vapor deposition of silicon thin film and silicon thin film long-period gratings inside a two-hole fiber and photonic crystal fiber with hollow cores.
Error-free switching of up to 40-Gb/s data using a silicon photonic microring resonator electro-optic switch is demonstrated for the first time, with bit-error-rate and power penalty characterizations firmly establishing its feasibility for high-performance photonic networks-on-chip.
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.
This study reports on a new photoreduction approach for growing dense and continuous silver nanowires from an anodic aluminum oxide (AAO) template. Silver nanoparticles are first reduced then merged to form nanowires in the AAO pores from dried silver nitride by laser irradiation. The morphology and composition of the grown nanostructures are characterized and the detailed photochemical growth mechanism...
Using photonic crystal nanocavities fabricated in the semiconductor gallium phosphide, we demonstrate second harmonic generation with input continuous wave powers of nanowatts (at 1550 nm).
We report on an experimental implementation of an interface between quantum dots (QD) and parametric downconversion (PDC). We present a PDC source compatible with QD emission and our efforts to demonstrate such compatibility.
Shapiro recently suggested that nonlocal dispersion cancellation is essentially classical in nature. It is shown that his classical model gives identical dispersion in two beams of light and is not analogous to nonlocal dispersion cancellation.
Time-domain THz spectroscopy is used to extract simultaneously dielectric and magnetic properties of hexagonal YMnO3. A magnon in antiferromagnetic phase and possible electromagnon in paramagnetic phase were first observed.
A novel design of f:2f self-referencing interferometer employing Wollaston prisms for group-delay dispersion compensation exhibits up to 15 dB reduction in phase noise in specific frequency bands compared to a Michelson interferometer arrangement.
We have demonstrated table-top generation of λ = 13.9 nm laser pulses with 7 µJ energy at 2.5 Hz repetition rate from nickel-like ions in a laser-created plasma that will enable new applications of coherent soft x-ray light on a table-top.
We present a study of higher-order spatial-mode propagation in waveguided parametric downconversion, including direct imaging of photon-pair mode profiles and analysis of spatial-spectral coupling.
Tapered fibres with waist diameters down to 0.7 µm embedded in hydrophobic aerogel are demonstrated as evanescent-field gas sensors. The porous aerogel is permeable to gases but protects the sub-micron fibre from contamination and damage.
High resolution THz vibrational spectrum of TRIS is measured using waveguide THz-TDS. 12 highly resolved spectral features for the dropcast film and 11 features for sublimated film are observed at 13.6K.
Significant THz power enhancement and polarity reversal were observed from Mg-doped InN. The carrier concentration-dependent THz polarity reversal reflects the interplay between the surface-electric-field and the photo-Dember field for THz emission from InN:Mg.
Single InAs semiconductor quantum dots were coupled to a microcavity consisting of a semiconductor Bragg reflector below the quantum dot layer, and an external micromirror fabricated at the tip of a single mode fiber.
We propose flexible, long-reach OCDMA-PON system, which deploys a remote node with single multi-port E/D. 10Gbps, 4-user, OCDMA transmission both up- and down-link are experimentally demonstrated over 59km SSMF without inline dispersion compensation.
We present electroluminescence from ZnCdSe/ZnCdMgSe Quantum Cascade structures, with 3 times higher luminescence efficiency, 30% narrower electroluminescence linewidths than our first demonstration. The measured turn-on voltage matches with the calculated value.
We introduce and test a simple approach for the characterization of domain distribution in bulk quadratic ferroelectric crystals, such as periodically poled Lithium Tantalate with random mark-to space ratio.
We demonstrate a new scheme for generating THz radiation based on the photo-Dember effect in lateral geometry. By micro-structuring a semiconductor surface we achieve strongly enhanced THz emission comparable to high-efficiency externally biased photoconductive emitters.
Type-I TMw→TM2w phase-matching in isotropic [001]-grown AlGaAs Bragg reflection waveguide is reported. This nonlinear process coexists with type-I TEw→TM2w and type-II TEw+TMw→TM2w interactions within a spectral window of 17 nm.
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