Patents Assigned to S2 Corporation
  • Patent number: 9853733
    Abstract: A method and apparatus includes an optical source for a single order single-sideband suppressed-carrier optical signal with a bandwidth that scales from over 4 gigaHertz or is at least 8 GHz from an optical carrier frequency. In an example embodiment, an apparatus includes a stable laser source configured to output an optical carrier signal at a carrier frequency. The apparatus includes a radio frequency electrical source configured to output an electrical radio frequency signal with a radio frequency bandwidth less than one octave. The apparatus also includes an optical modulator configured to output an optical signal with the optical carrier signal modulated by the radio frequency signal in a plurality of orders (harmonics) of optical frequency sidebands. The apparatus further includes an optical filter configured to pass one single order optical frequency sideband of the optical signal, which sideband does not overlap the sideband of any other harmonic.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: December 26, 2017
    Assignees: Montana State University, S2 Corporation
    Inventors: Colton Richard Stiffler, Scott Henry Bekker, Kristian D. Merkel, Randy R. Reibel, William Randall Babbitt, Krishna Mohan Rupavatharam
  • Publication number: 20150200727
    Abstract: A method and apparatus includes an optical source for a single order single-sideband suppressed-carrier optical signal with a bandwidth that scales from over 4 gigaHertz or is at least 8 GHz from an optical carrier frequency. In an example embodiment, an apparatus includes a stable laser source configured to output an optical carrier signal at a carrier frequency. The apparatus includes a radio frequency electrical source configured to output an electrical radio frequency signal with a radio frequency bandwidth less than one octave. The apparatus also includes an optical modulator configured to output an optical signal with the optical carrier signal modulated by the radio frequency signal in a plurality of orders (harmonics) of optical frequency sidebands. The apparatus further includes an optical filter configured to pass one single order optical frequency sideband of the optical signal, which sideband does not overlap the sideband of any other harmonic.
    Type: Application
    Filed: March 27, 2015
    Publication date: July 16, 2015
    Applicants: Montana State University, S2 Corporation
    Inventors: Colton Richard Stiffler, Scott Henry BEKKER, Kristian D. MERKEL, Randy R. REIBEL, William Randall BABBITT, Krishna Mohan RUPAVATHARAM
  • Patent number: 9020360
    Abstract: A method and apparatus includes an optical source for a single order single-sideband suppressed-carrier optical signal with a bandwidth that scales from over 1 gigaHertz to greater than 20 gigaHertz. In an example embodiment, an apparatus includes a stable laser source configured to output an optical carrier signal at a carrier frequency. The apparatus includes a radio frequency electrical source configured to output an electrical radio frequency signal with a radio frequency bandwidth less than one octave. The apparatus also includes an optical modulator configured to output an optical signal with the optical carrier signal modulated by the radio frequency signal in a plurality of orders of optical frequency sidebands. The apparatus further includes an optical filter configured to pass one single order optical frequency sideband of the optical signal.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: April 28, 2015
    Assignees: Montana State University, S2 Corporation
    Inventors: Colton Richard Stiffler, Scott Henry Bekker, Kristian D. Merkel, Randy R. Reibel, William R. Babbitt, Krishna Mohan Rupavatharam
  • Patent number: 8844298
    Abstract: A sample mounting apparatus for a cryo-cooler is provided having a housing with an outer wall surface for connecting to the cryo-cooler, and an inner wall surface. An inert gas is sealed inside the housing for thermal transfer, and a delicate mount is attached to the inner wall surface of the housing for supporting the sample and substantially preventing vibrations from being transferred to the sample from the cryo-cooler.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: September 30, 2014
    Assignee: S2 Corporation
    Inventors: Alex Woidtke, Peter B. Sellin, Luke Mauritsen, David Snow
  • Patent number: 8829471
    Abstract: Techniques for spatial spectral holography include a doped crystal comprising Thulium doped into a host crystal of Yttrium Lutetium Aluminum Garnet wherein a concentration of Thulium atoms is less than 3 atomic percent. Techniques further include an apparatus with a source for optical electromagnetic radiation and a cryocooler configured to maintain an operating temperature in a range from about 3 Kelvin to about 6 Kelvin. The cryocooler includes a first optical window. The apparatus also includes a doped crystal comprising Thulium doped into a host crystal of Yttrium Lutetium Aluminum Garnet disposed inside the cryocooler in a position to be illuminated by incident optical electromagnetic radiation derived from the source. The apparatus also includes a detector configured to detect optical electromagnetic radiation emitted from the doped crystal. Techniques include a method for using at least one of the above doped crystals.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: September 9, 2014
    Assignees: Montana State University, S2 Corporation
    Inventors: Kristian D. Merkel, Colton Richard Stiffler, Alex Woidtke, Aaron Traxinger, Randy W. Equall, Zeb Barber, Calvin Harrington, Krishna Mohan Rupavatharam, Charles W. Thiel, Rufus Cone
  • Patent number: 8756941
    Abstract: A cryogenic apparatus is provided having a nested thermally insulating structure, thermal links, a vacuum shroud, and a cryo-cooler. The nested thermally insulated structure holds a sample to be cooled while dampening the external vibrations caused by the cryo-cooler, the surrounding environment or cryo-cooler mounting surface. The thermal link is made of thermally conductive wires which connect the nested thermally insulated structure and the cryo-cooler thereby allowing the apparatus to reduce vibrations inherent in the operation of the cryo-cooler.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: June 24, 2014
    Assignee: S2 Corporation
    Inventors: David Snow, Michael Chase, Alex Woidtke, Luke Mauritsen, Peter B. Sellin, Kris Merkel
  • Patent number: 8516834
    Abstract: A cryogenic apparatus is provided having a nested thermally insulating structure, thermal links, a vacuum shroud, and a cryo-cooler. The nested thermally insulated structure holds a sample to be cooled while dampening the external vibrations caused by the cryo-cooler, the surrounding environment or cryo-cooler mounting surface. A vacuum plate is removably attached to the vacuum shroud to provide access to the sample chamber.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: August 27, 2013
    Assignee: S2 Corporation
    Inventors: David Snow, Michael Chase, Alex Woidtke, Luke Mauritsen, Isaac Henslee, Peter B. Sellin, Kris Merkel
  • Patent number: 8307666
    Abstract: A method of rotating a sample for use in a cryocooler, having the steps of mounting a sample in a sample mounting apparatus, the apparatus comprising a housing having an outer wall surface, an inner wall surface, a mount attached to the inner wall surface for supporting the sample, and a motor for rotating the sample, and an exchange gas to provide thermal communication between the moving sample and the inner housing surfaces; sealing the housing by applying a sealant to adjoining parts of the housing such that the joints are air tight; evacuating the housing; adding an inert gas to the housing; sealing the inert gas in the housing; attaching the outer wall surface of the housing to a cryocooler; and rotating the sample by engaging the motor. Also disclosed is a cryogenic apparatus having a sample holder; a cryo-cooler; a thermal link connecting the sample holder and the cryo-cooler; and a motor attached to the sample holder for rotating a sample.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: November 13, 2012
    Assignee: S2 Corporation
    Inventors: Alex Woidtke, Peter B. Sellin, Charles Thiel, Calvin C. Harrington