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We demonstrate the controlled transport of simultaneous nano-scale particles across a gold film patterned with nanopillars and C-shaped engravings. Nanopillars load particles onto nearby plasmonic conveyor belts formed from sequences of C-shaped engravings.

We transport nano-scale objects across a distance of many microns using a repeated sequence of rotated C-shaped plasmonic resonators. Rotating the polarization angle of the overhead laser illumination drives the particles' motion.

We develop a plasmonic trapping and conveyor system based on resonant C-shaped engravings driven by polarization rotation and wavelength switching.

We develop a near-field based optical trapping and conveyor belt system based on a novel plasmonic structure: C-shaped engraving. Using polarization rotation and wavelength switching, we demonstrate controlled transport of nanoparticles along different paths.

X-ray differential phase contrast imaging system with a grating-less X-ray source and grating-less detectors are effective for applications with higher X-ray photon energy by decoupling a trade-off the parameters, signal contrast and field-of-view.

A novel optical system architecture employing local holographic recording with a pico-second pulsed fiber laser and a small page size SLM has the potential towards realizing compact, high capacity and high data transfer rate optical storage.

A zoom objective lens has been designed and implemented based on a newly proposed power arrangement having a constant focal length and a linear movement of single zooming component for selection of recording layers.

We present a numerical technique for design and optimization of nanometallic structures for near-field optical applications such as heat-assisted magnetic recording (HAMR). The sensitivity of the optical behavior of a nanostructure with respect to its size and shape may be efficiently obtained with a pair of “forward” and “backward” FDTD simulations. Devices may be optimized by iteratively adjusting their dimensions along direction of highest sensitivity for improvement.

We propose a nano-scale C-aperture nano-tip photo-electron source with a CsBr photo-cathode. We fabricated the structure and estimated the optical spot available in the CsBr thin film with photoresist exposure.

In this keynote presentation I will address fundamental principles underlying the operation of near field transducers. In particular emphasis will be placed on using vector field topology for improved understanding. Selected examples of near field transducers will be presented related to IT applications. Article not available.

The sensitivity of a nanophotonic device's performance with respect to changes in its shape and size can be efficiently obtained by adjoint FDTD. By optimizing the structure's boundary we constrain resulting designs to be fabricatable.

A systematic comparison of the accuracies of scalar diffraction integral and angular spectrum method with respect to FDTD are done. Validity regions of the methods are derived and optimal method for each region is determined.

An aspherical-meniscus and air-spaced-spherics are identified as minimum aberration configurations for page-based holographic recordings. Air-spaced-apsherics attain imaging NA’s of 0.7 for holographic recording only, and of 0.45 for a combination of holographic and surface recording.

A unique C-aperture metallic waveguide with a 90° bend and tapered region having applications to HAMR is presented. The structure has a small footprint and yet shows high throughput and a small spot size.

High NA (0.7 ~ 0.8) objective lens in which both object and pupil aberrations are compensated for are designed in two-element configurations, and are usable for a combination of holographic and surface recordings.

The Fourier transform lens consisting of an aspherical element is analyzed in terms of the supportable number of pixels by formalizing an en-squared-power ratio as a function of the Nyquist aperture ratio and aberrations.

We present a C-shaped nano-aperture-enhanced Ge photodetector that shows 2~5 times photocurrent enhancement over that from a square aperture of the same area at 1310 nm. We demonstrate the polarization dependence of C aperture photodetector.

By using the direct-write e-beam technique with liquid phase epitaxy LiNbO3 thin films, we have successfully produced sub-micron domain structures for achieving dynamically switchable filters in a periodically poled lithium niobate (PPLN) waveguide. The effects of direct-write e - beam parameters are investigated to achieve sub-micron periodic domain structures in homoepitaxial liquid phase epitaxy (LPE) LiNbO3 thin films. More regular structures appear at acceleration voltages higher than 20 kV and areal dose range 350 μC / cm2 ~ 450 μC / cm2 with lower scanning speeds. Under these optimal conditions, an approximately 500 μm-long grating of a 1.1 μm period, consisting ~ 180 nm domains is achieved.

We demonstrate 12-layer storage of 5.84 Gbits per square inch via micro-holograms written and read at 0.532 nm from a 125 micron photopolymer disk continuously rotating at 3600 RPM. Scaling predicts a potential TByte capacity.

We propose and demonstrate multi-layer storage in holographic photopolymer by locally altering the reflectivity of a factory-written reflection hologram at the focus of a single objective lens. Linear, two-photon and thermal writing mechanisms are demonstrated.

C-shaped apertures in a metal film, were made to be resonant at visible wavelengths. They showed transmission enhancement of 22 times over a square aperture of the same area. This resonance was tuned over 70 nm

Water-assisted micromachining of silicon with ultra-short laser pulses is investigated.We show that water confinement provides enhanced ablation rate, improved ablation profile, and less debris re-deposition as compared to ablation in air. Theoretical modeling of laser-matter interaction in water-confined silicon ablation and experimental results with femtosecond laser pulses are presented.

We demonstrate periodic domain engineering using a direct-write electron beam poling technique in Z--oriented liquid phase epitaxy LiNbO3 films grown on LiNbO3 and LiTaO3 substrates for waveguide applications. Submicron domains (~500 nm) are experimentally observed.

Lead barium niobate (Pb1-xBaxNb2O6, PBN1-x) is a very promising photorefractive material for applications such as holographic data storage. We investigate the light induced absorption, photorefractive properties, such as the sensitivity, diffraction efficiency, and gain, and thermal fixing properties in Ce doped tetragonal PBN50, and compare with the properties of an undoped PBN sample. Non-single photon behavior was observed only in Ce doped sample, but not in the undoped sample. Thermal fixing was achieved in both undoped and Ce doped samples at temperatures above 70oC. The room temperature life times after thermal fixing were estimated to be 30 hours and 20 days for undoped and Ce doped samples, respectively.

Future optical communication and computer interconnect systems will require complex switching networks. Computer applications, in particular, may require monolithic, non-blocking switching networks of at least 100 × 100 elements. Numerous integrated-optical switch designs have been described and demonstrated with low insertion losses and high switching speeds.1 To . date, however, the highest level of integration achieved is a 16 × 16 LiNbO3 switch array on a 60 mm long substrate.2 One reason why these switch designs can’t be integrated to higher levels is the geometry of the basic device which consists of waveguides running in parallel or crossing at very small angles. This results in a device cell which is very long and thin and thus does not efficiently use substrate area. In addition, the near parallel waveguide geometry usually mandates the use of bends for waveguide separation which further increase overall switch area.