Patent application number | Description | Published |
20080315177 | LIGHT EMISSION USING QUANTUM DOT EMITTERS IN A PHOTONIC CRYSTAL - Devices and methods of manufacturing; for emitting substantially white light using a photonic crystal are described. The photonic crystal has a lattice of air holes and is made from a substrate containing quantum dots. The substrate is etched with three defects that are optically coupled together so that each emits only certain frequencies of light. In combination, the defects can produce substantially white light. The parameters of the photonic crystal are dimensioned so as to cause the coupling between the defects to produce substantially white light. | 12-25-2008 |
20090092156 | DEVICES AND METHODS FOR PROVIDING STIMULATED RAMAN LASING - Devices and methods for providing stimulated Raman lasing are provided. In some embodiments, devices include a photonic crystal that includes a layer of silicon having a lattice of holes and a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein the thickness of the layer of silicon, the spacing of the lattice of holes, and the size of the holes are dimensioned to provide Raman lasing. In some embodiments, methods include forming a layer of silicon, and etching the layer of silicon to form a lattice of holes with a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein the thickness of the layer of silicon, the spacing of the lattice of holes, and the size of the holes are dimensioned to provide Raman lasing. | 04-09-2009 |
20090191657 | ALL-SILICON RAMAN AMPLIFIERS AND LASERS BASED ON MICRO RING RESONATORS - Methods of manufacturing a lasing device are provided by some embodiments, the methods including: creating a silicon micro ring with a predetermined radius and a predetermined first cross-sectional dimension; creating a silicon waveguide with a predetermined second cross-sectional dimension, the silicon waveguide spaced from the silicon micro ring by a predetermined distance; and wherein the predetermined distance, the predetermined radius, the predetermined first cross-sectional dimension, and the predetermined second cross-sectional dimension are determined so that at least one first whispering gallery mode resonant frequency of the silicon micro ring and at least one second whispering gallery mode resonant frequency of the silicon micro ring are separated by an optical phonon frequency of silicon. | 07-30-2009 |
20100270481 | SYSTEMS, DEVICES AND METHODS FOR TUNING A RESONANT WAVELENGTH OF AN OPTICAL RESONATOR AND DISPERSION PROPERTIES OF A PHOTONIC CRYSTAL WAVEGUIDE - Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning resonant wavelengths of an optical resonator. Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning dispersion properties of photonic crystal waveguides. In some embodiments, methods for tuning a resonant wavelength of an optical resonator are provided, the methods including: providing an optical resonator having a surface; determining an initial resonant wavelength emitted by the optical resonator in response to an electromagnetic radiation input; determining a number of layers of dielectric material based on a difference between the initial resonant wavelength and a target resonant wavelength and a predetermined tuning characteristic; and applying the determined number of layers of dielectric material to the surface of the optical resonator to tune the initial resonant wavelength to a tuned resonant wavelength. | 10-28-2010 |
20110147344 | DEVICES AND METHODS FOR PROVIDING STIMULATED RAMAN LASING - Devices and methods for providing stimulated Raman lasing are provided. In some embodiments, devices include a photonic crystal that includes a layer of silicon having a lattice of holes and a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein the thickness of the layer of silicon, the spacing of the lattice of holes, and the size of the holes are dimensioned to provide Raman lasing. In some embodiments, methods include forming a layer of silicon, and etching the layer of silicon to form a lattice of holes with a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein the thickness of the layer of silicon, the spacing of the lattice of holes, and the size of the holes are dimensioned to provide Raman lasing. | 06-23-2011 |
20110249689 | DEVICES, SYSTEMS, AND METHODS PROVIDING MICRO-RING AND/OR MICRO-RACETRACK RESONATOR - Provided herein are certain embodiments of systems, methods and devices for Raman lasers based on micro-ring and mircro-racetrack resonators, and the manufacturing thereof. For example, a device can be provided which is structured to receive an electro-magnetic radiation including a resonator arrangement which has a distance from one edge thereof to another edge thereof of at most approximately a wavelength of the electro-magnetic radiation that impacts the resonator arrangement. According to some embodiments, the resonator arrangement can be configured to generate a Raman radiation when impacted by a further electro-magnetic radiation. In some embodiments, the resonator arrangement can solely generate the Raman radiation which is lasing, which Raman radiation can be generated by the resonator arrangement in a continuous mode and/or a pulsed lasing mode. The resonator arrangement can generate the Raman radiation which is lasing without a use of an external electrical driver. | 10-13-2011 |
20160091975 | HAND-GESTURE-BASED REGION OF INTEREST LOCALIZATION - A method, non-transitory computer readable medium, and apparatus for localizing a region of interest using a hand gesture are disclosed. For example, the method acquires an image containing the hand gesture from the ego-centric video, detects pixels that correspond to one or more hands in the image using a hand segmentation algorithm, identifies a hand enclosure in the pixels that are detected within the image, localizes a region of interest based on the hand enclosure and performs an action based on the object in the region of interest. | 03-31-2016 |
20160091976 | DYNAMIC HAND-GESTURE-BASED REGION OF INTEREST LOCALIZATION - A method, non-transitory computer-readable medium, and apparatus for localizing a region of interest using a dynamic hand gesture are disclosed. For example, the method captures the ego-centric video containing the dynamic hand gesture, analyzes a frame of the ego-centric video to detect pixels that correspond to a fingertip using a hand segmentation algorithm, analyzes temporally one or more frames of the ego-centric video to compute a path of the fingertip in the dynamic hand gesture, localizes the region of interest based on the path of the fingertip in the dynamic hand gesture and performs an action based on an object in the region of interest. | 03-31-2016 |