Search Patents
  • Silicon-Carbide-on-Insulator (SiCOI)
    Publication number: 20200279767
    Abstract: Silicon carbide on insulator is provided by bonding bulk silicon carbide to a substrate with an oxide-oxide fusion bond, followed by thinning the bulk silicon carbide as needed.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 3, 2020
    Inventors: Daniil M. Lukin, Constantin Dory, Jelena Vuckovic
  • Silicon-Carbide-on-Insulator via photoelectrochemical etching
    Publication number: 20210398804
    Abstract: Silicon carbide on insulator is provided by bonding bulk silicon carbide to a substrate with an oxide-oxide fusion bond, followed by thinning the bulk silicon carbide as needed. A doping-selective etch for silicon carbide is used to improve thickness uniformity of the silicon carbide layer(s).
    Type: Application
    Filed: September 3, 2021
    Publication date: December 23, 2021
    Inventors: Daniil M. Lukin, Jelena Vuckovic
  • OPTICAL REAL-TIME BIOSENSOR
    Publication number: 20210372929
    Abstract: The disclosure provides an optical probe comprising an optical waveguide attached to a molecular switch that produces an altered optical signal upon binding a target molecule. The disclosure also provides an optical sensor system comprising an optical probe, a light source configured to emit the excitation light to be coupled into the optical waveguide of the optical probe; and a detector.
    Type: Application
    Filed: October 23, 2019
    Publication date: December 2, 2021
    Inventors: Amani Hariri, Constantin Dory, Alyssa Cartwright, Jelena Vuckovic, Hyongsok Tom Soh
  • Dipole induced transparency drop-filter cavity-waveguide system
    Publication number: 20080101800
    Abstract: A normally opaque waveguide interacting with a drop-filter cavity can be switched to a transparent state when the drop filter is also coupled to a dipole. This dipole induced transparency may be obtained even when the vacuum Rabi frequency of the dipole is much less than the cavity decay rate. The condition for transparency is a large Purcell factor. Dipole induced transparency can be used in quantum repeaters for long distance quantum communication.
    Type: Application
    Filed: October 24, 2007
    Publication date: May 1, 2008
    Inventors: Edo Waks, Jelena Vuckovic
  • Optical switching based on dipole induced transparency
    Publication number: 20100135612
    Abstract: A normally opaque waveguide interacting with a drop-filter cavity can be switched to a transparent state when the drop filter is also coupled to a dipole. This dipole induced transparency may be obtained even when the vacuum Rabi frequency of the dipole is much less than the cavity decay rate. The condition for transparency is a large Purcell factor. Dipole induced transparency can be used in quantum repeaters for long distance quantum communication.
    Type: Application
    Filed: November 12, 2009
    Publication date: June 3, 2010
    Inventors: Edo Waks, Jelena Vuckovic
  • Optical real-time biosensor
    Patent number: 11953441
    Abstract: The disclosure provides an optical probe comprising an optical waveguide attached to a molecular switch that produces an altered optical signal upon binding a target molecule. The disclosure also provides an optical sensor system comprising an optical probe, a light source configured to emit the excitation light to be coupled into the optical waveguide of the optical probe; and a detector.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: April 9, 2024
    Assignees: CZ Biohub SF, LLC, The Board of Trustees of the Leland Stanford Junior University
    Inventors: Amani Hariri, Constantin Dory, Alyssa Cartwright, Jelena Vuckovic, Hyongsok Tom Soh
  • Chip-integrated Titanium:Sapphire Laser
    Publication number: 20220278497
    Abstract: An integrated Ti:Sapphire laser device includes a substrate [100], a first waveguide resonator [102] composed of a gain medium integrated onto the substrate in a planar technology configuration, a frequency doubler [104] composed of a second order nonlinear material integrated onto the substrate in a planar technology configuration, and a second waveguide resonator [106] composed of a titanium doped sapphire gain medium integrated onto the substrate in a planar technology configuration.
    Type: Application
    Filed: July 31, 2020
    Publication date: September 1, 2022
    Inventors: Geun Ho Ahn, Daniil M. Lukin, Melissa Guidry, Jelena Vuckovic, Kiyoul Yang
  • Optimized quantum transduction
    Publication number: 20220327415
    Abstract: Improved quantum transducers based on ensembles of quantum emitters are provided. This work improves the efficiencies of such transducers by compensating for the detrimental effects of inhomogeneous broadening of transition frequencies in such systems. This approach is built upon the insight that the temporal shape of the drive supplying the energy required for transduction can be experimentally tuned. Hence, it is an additional degree of freedom for designing efficient transducers. We pose the design of the drive as a scattering theory optimization problem, where the transduction efficiency is the quantity being maximized, and employ numerical optimization techniques to solve it.
    Type: Application
    Filed: April 7, 2022
    Publication date: October 13, 2022
    Inventors: Sattwik Deb Mishra, Rahul Trivedi, Jelena Vuckovic, Amir H. Safavi-Naeini
  • Optical switching based on dipole induced transparency
    Patent number: 7848603
    Abstract: A normally opaque waveguide interacting with a drop-filter cavity can be switched to a transparent state when the drop filter is also coupled to a dipole. This dipole induced transparency may be obtained even when the vacuum Rabi frequency of the dipole is much less than the cavity decay rate. The condition for transparency is a large Purcell factor. Dipole induced transparency can be used in quantum repeaters for long distance quantum communication.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: December 7, 2010
    Assignee: The Board Trustees of the Leland Stanford Junior University
    Inventors: Edo Waks, Jelena Vuckovic
  • OPTICAL CAVITY EMITTER ARRANGEMENTS WITH SPECTRAL ALIGNMENT AND METHODS THEREFOR
    Publication number: 20090045317
    Abstract: Aspects of the disclosure are directed to optical microcavities and emitters that are spectrally aligned in an arrangement having an array of such microcavity-emitter combinations. The spectral alignment can be selective, in that a portion of the array of microcavity-emitter combinations, or a single microcavity-emitter combination, can be individually spectrally aligned. In specific examples, light is coupled within a semiconductor device having wavelength-dependent structures and optical cavities optically couple to the wavelength-dependent structures. One of the optical cavities and a wavelength-dependent structure are spectrally aligned, independent of another of the optical cavities.
    Type: Application
    Filed: June 6, 2008
    Publication date: February 19, 2009
    Inventors: Ilya Fushman, Andrei Faraon, Jelena Vuckovic, Dirk Englund
  • Dipole induced transparency drop-filter cavity-waveguide system
    Patent number: 7630604
    Abstract: A normally opaque waveguide interacting with a drop-filter cavity can be switched to a transparent state when the drop filter is also coupled to a dipole. This dipole induced transparency may be obtained even when the vacuum Rabi frequency of the dipole is much less than the cavity decay rate. The condition for transparency is a large Purcell factor. Dipole induced transparency can be used in quantum repeaters for long distance quantum communication.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: December 8, 2009
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Edo Waks, Jelena Vuckovic
  • Methods for controlling positions of the guided modes of the photonic crystal waveguides
    Publication number: 20020150366
    Abstract: The invention is directed to different methods for controlling the positions of the guided modes of the photonic crystal waveguides. Methods based on both rearrangement of the holes and changing the size of the holes are presented. We have observed and explained the appearance of acceptor-type modes and the donor-type waveguides. The ability to tune frequencies of the guided modes within a frequency bandgap is necessary in order to achieve efficient guiding of light within a waveguide (reduced lateral and vertical waveguide losses) as well as to match frequencies of eigen modes of different photonic crystal based devices in order to have good coupling between them.
    Type: Application
    Filed: January 10, 2002
    Publication date: October 17, 2002
    Inventors: Marko Loncar, Jelena Vuckovic, Axel Scherer
  • Dispersion Engineered Phased Array
    Publication number: 20200379315
    Abstract: A photonic crystal optical phased array device has a dispersion engineered slow light waveguide region; a mode coupler region capable of optically coupling an input waveguide to the dispersion engineered slow light waveguide region; and optical antenna regions integrated within the dispersion engineered slow light waveguide region. The dispersion engineered slow light waveguide region has a substantially linear dispersion relation within a predetermined operational bandwidth of the optical phased array device. The optical antenna regions are formed by an alteration of a periodic structure of the photonic crystal and are capable of radiating light out from the dispersion engineered slow light waveguide region.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Jelena Vuckovic, Dries J. F. Vercruysse
  • Biological cell nanocavity probes
    Publication number: 20140170695
    Abstract: An optical fiber is combined with a photonic crystal structure (PCS) that is optically coupled to the optical fiber. The fiber has an exposed fiber surface, and the PCS is affixed to the optical fiber and disposed on or in proximity to the exposed fiber surface. The PCS includes an elongate probe member configured for biological probing. The elongate probe member includes an optical resonant cavity. In an experiment, this was accomplished using an optical fiber tip with a semiconductor template attached to its side face. The semiconductor structure had a thin, needle-like tip (including a nanobeam cavity) which can be suitably inserted inside (or broken off inside) a biological cell without causing cytotoxicity.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Inventors: Gary Shambat, Jelena Vuckovic
  • Optical cavity emitter arrangements with spectral alignment and methods therefor
    Patent number: 7994467
    Abstract: Aspects of the disclosure are directed to optical microcavities and emitters that are spectrally aligned in an arrangement having an array of such microcavity-emitter combinations. The spectral alignment can be selective, in that a portion of the array of microcavity-emitter combinations, or a single microcavity-emitter combination, can be individually spectrally aligned. In specific examples, light is coupled within a semiconductor device having wavelength-dependent structures and optical cavities optically couple to the wavelength-dependent structures. One of the optical cavities and a wavelength-dependent structure are spectrally aligned, independent of another of the optical cavities.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: August 9, 2011
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Ilya Fushman, Andrei Faraon, Jelena Vuckovic, Dirk Englund
  • Optical Fibers Functionalized with Photonic Crystal Resonant Optical Structures
    Publication number: 20150378054
    Abstract: A photonic crystal (PC) device including one or more resonant optical structures defined by the photonic crystal structure is affixed to the end face of an optical fiber. The PC device is fabricated on a separate substrate, and then affixed to the fiber end face. This transfer can be facilitated by device templates which are laterally supported by tabs after an undercut etch. The tabs can be designed to break during transfer to the fiber, thereby facilitating transfer. Registration marks and/or the use of device templates having the same diameter as the fiber can be used to provide lateral alignment of the fiber to the resonant optical structures. Such alignment may be needed to provide optical coupling between the fiber and the resonant optical structures.
    Type: Application
    Filed: June 30, 2015
    Publication date: December 31, 2015
    Inventors: Gary Shambat, Jelena Vuckovic
  • Strong spin-microwave coupling for quantum technologies
    Publication number: 20230289644
    Abstract: Improved spin-microwave coupling is provided using a microwave cavity having a galvanic element connecting two points on its walls. This configuration can provide an unusual cavity mode having a highly concentrated magnetic field (to provide good coupling to a spin system) and a spread-out electric field (to reduce loss, since the electric field is almost entirely in vacuum). The galvanic element preferably includes a nano-scale current concentration feature (i.e., sub 100 nm lateral dimensions) to concentrate the magnetic field. The spin system of interest is preferably disposed in proximity to this current concentration feature. Applications include coherent quantum optical-microwave transduction and quantum memories.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 14, 2023
    Inventors: Eric I. Rosenthal, Christopher P. Anderson, Jelena Vuckovic
  • Dispersion engineered phased array
    Patent number: 11467468
    Abstract: A photonic crystal optical phased array device has a dispersion engineered slow light waveguide region; a mode coupler region capable of optically coupling an input waveguide to the dispersion engineered slow light waveguide region; and optical antenna regions integrated within the dispersion engineered slow light waveguide region. The dispersion engineered slow light waveguide region has a substantially linear dispersion relation within a predetermined operational bandwidth of the optical phased array device. The optical antenna regions are formed by an alteration of a periodic structure of the photonic crystal and are capable of radiating light out from the dispersion engineered slow light waveguide region.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: October 11, 2022
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Jelena Vuckovic, Dries J. F. Vercruysse
  • Methods for controlling positions of the guided modes of the photonic crystal waveguides
    Patent number: 6944384
    Abstract: The invention is directed to different methods for controlling the positions of the guided modes of the photonic crystal waveguides. Methods based on both rearrangement of the holes and changing the size of the holes are presented. We have observed and explained the appearance of acceptor-type modes and the donor-type waveguides. The ability to tune frequencies of the guided modes within a frequency bandgap is necessary in order to achieve efficient guiding of light within a waveguide (reduced lateral and vertical waveguide losses) as well as to match frequencies of eigen modes of different photonic crystal based devices in order to have good coupling between them.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: September 13, 2005
    Assignee: California Institute of Technology
    Inventors: Marko Loncar, Jelena Vuckovic, Axel Scherer
  • Crossed Nanobeam Structure for a Low-Threshold Germanium Laser
    Publication number: 20150372455
    Abstract: A crossed nanobeam structure for strain engineering in semiconductor devices is provided. For example, such a structure can be used for a low-threshold germanium laser. While the photonic crystal nanobeam enables light confinement in a subwavelength volume with small optical loss, another crossing nanobeam induces high tensile strain in the small region where the optical mode is tightly confined. As maintaining a small optical loss and a high tensile strain reduces the required pumping for achieving net optical gain beyond cavity losses, this technique can be used to develop an extremely low-threshold Ge laser source. Moreover, the structure can be easily integrated into electronic and photonic circuits.
    Type: Application
    Filed: June 23, 2015
    Publication date: December 24, 2015
    Inventors: Donguk Nam, Jan A. Petykiewicz, Devanand S. Sukhdeo, Shashank Gupta, Jelena Vuckovic, Krishna C. Saraswat
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