Patents by Inventor Eugene R. Peressini

Eugene R. Peressini has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6834067
    Abstract: An optically-pumped laser having a gain medium configured to provide a low loss, three-dimensional integrated optical pump cavity that substantially confines optical pump radiation within the lasing volume, which is particularly useful for efficiently pumping solid state gain media that has low pump dopant concentration. The integrated pump cavity includes a plurality of boundaries contiguous with the gain medium. An optical pump source such as a laser diode array supplies optical pump radiation that is input into the gain medium through one or more pump cavity windows with a propagation direction transverse to a laser axis defined through the gain medium. In some embodiments, an optical surface is situated opposite the window to approximately recollimate the input pump radiation. The optical pump cavity may be designed to concentrate the optical pump radiation and approximately uniformly pump the entire volume of the lasing medium.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: December 21, 2004
    Assignee: Raytheon Company
    Inventor: Eugene R. Peressini
  • Patent number: 6690695
    Abstract: An optically-pumped laser having a gain medium configured to provide a low loss, three-dimensional integrated optical pump cavity that substantially confines optical pump radiation within the lasing volume, which is particularly useful for efficiently pumping solid state gain media that has low pump dopant concentration. The integrated pump cavity includes a plurality of boundaries contiguous with the gain medium. An optical pump source such as a laser diode array supplies optical pump radiation that is input into the gain medium through one or more pump cavity windows with a propagation direction transverse to a laser axis defined through the gain medium. In some embodiments, an optical surface is situated opposite the window to approximately recollimate the input pump radiation. The optical pump cavity may be designed to concentrate the optical pump radiation and approximately uniformly pump the entire volume of the lasing medium.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: February 10, 2004
    Assignee: Raytheon Company
    Inventor: Eugene R. Peressini
  • Patent number: 6570902
    Abstract: An optically-pumped laser having a gain medium configured to provide a low loss, three-dimensional integrated optical pump cavity that substantially confines optical pump radiation within the lasing volume, which is particularly useful for efficiently pumping solid state gain media that has low pump dopant concentration. The integrated pump cavity includes a plurality of boundaries contiguous with the gain medium. An optical pump source such as a laser diode array supplies optical pump radiation that is input into the gain medium through one or more pump cavity windows with a propagation direction transverse to a laser axis defined through the gain medium. In some embodiments, an optical surface is situated opposite the window to approximately recollimate the input pump radiation. The optical pump cavity may be designed to concentrate the optical pump radiation and approximately uniformly pump the entire volume of the lasing medium.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: May 27, 2003
    Assignee: Raytheon Company
    Inventor: Eugene R. Peressini
  • Publication number: 20020186742
    Abstract: A laser in which the laser emission is autocoupled into an optical fiber. The laser cavity is insensitive to misalignment; i.e. it will oscillate if the optical fiber is positioned within an allowed volume determined by a degenerate resonator configuration. In one embodiment, a solid state laser includes two ball lenses arranged on opposing sides of the gain medium. The degenerate resonator configuration is defined on one end by a reflectively-coated outer surface of the ball lens. The other end is approximately defined by an allowed volume on the outer surface of the second ball lens. To provide a laser cavity the reflective end of the optical fiber is situated within the allowed volume. The laser may be end-pumped using a fiber-coupled laser diode, and the ball lens is used to focus the pump beam into the gain medium. The reflective end may be provided by a Bragg grating.
    Type: Application
    Filed: May 3, 2002
    Publication date: December 12, 2002
    Inventors: Graham W. Flint, Maurice A. Pessot, Eugene R. Peressini, Eric B. Takeuchi
  • Publication number: 20020176471
    Abstract: An optically-pumped laser having a gain medium configured to provide a low loss, three-dimensional integrated optical pump cavity that substantially confines optical pump radiation within the lasing volume, which is particularly useful for efficiently pumping solid state gain media that has low pump dopant concentration. The integrated pump cavity includes a plurality of boundaries contiguous with the gain medium. An optical pump source such as a laser diode array supplies optical pump radiation that is input into the gain medium through one or more pump cavity windows with a propagation direction transverse to a laser axis defined through the gain medium. In some embodiments, an optical surface is situated opposite the window to approximately recollimate the input pump radiation. The optical pump cavity may be designed to concentrate the optical pump radiation and approximately uniformly pump the entire volume of the lasing medium.
    Type: Application
    Filed: March 21, 2002
    Publication date: November 28, 2002
    Inventor: Eugene R. Peressini
  • Publication number: 20020159496
    Abstract: An optically-pumped laser having a gain medium configured to provide a low loss, three-dimensional integrated optical pump cavity that substantially confines optical pump radiation within the lasing volume, which is particularly useful for efficiently pumping solid state gain media that has low pump dopant concentration. The integrated pump cavity includes a plurality of boundaries contiguous with the gain medium. An optical pump source such as a laser diode array supplies optical pump radiation that is input into the gain medium through one or more pump cavity windows with a propagation direction transverse to a laser axis defined through the gain medium. In some embodiments, an optical surface is situated opposite the window to approximately recollimate the input pump radiation. The optical pump cavity may be designed to concentrate the optical pump radiation and approximately uniformly pump the entire volume of the lasing medium.
    Type: Application
    Filed: March 21, 2002
    Publication date: October 31, 2002
    Inventor: Eugene R. Peressini
  • Publication number: 20020150132
    Abstract: An optically-pumped laser having a gain medium configured to provide a low loss, three-dimensional integrated optical pump cavity that substantially confines optical pump radiation within the lasing volume, which is particularly useful for efficiently pumping solid state gain media that has low pump dopant concentration. The integrated pump cavity includes a plurality of boundaries contiguous with the gain medium. An optical pump source such as a laser diode array supplies optical pump radiation that is input into the gain medium through one or more pump cavity windows with a propagation direction transverse to a laser axis defined through the gain medium. In some embodiments, an optical surface is situated opposite the window to approximately recollimate the input pump radiation. The optical pump cavity may be designed to concentrate the optical pump radiation and approximately uniformly pump the entire volume of the lasing medium.
    Type: Application
    Filed: March 21, 2002
    Publication date: October 17, 2002
    Inventor: Eugene R. Peressini
  • Patent number: 6418156
    Abstract: An optically-pumped laser having a gain medium configured to provide a low loss, three-dimensional integrated optical pump cavity that substantially confines optical pump radiation within the lasing volume, which is particularly useful for efficiently pumping solid state gain media that has low pump dopant concentration. The integrated pump cavity includes a plurality of boundaries contiguous with the gain medium. An optical pump source such as a laser diode array supplies optical pump radiation that is input into the gain medium through one or more pump cavity windows with a propagation direction transverse to a laser axis defined through the gain medium. In some embodiments, an optical surface is situated opposite the window to approximately recollimate the input pump radiation. The optical pump cavity may be designed to concentrate the optical pump radiation and approximately uniformly pump the entire volume of the lasing medium.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: July 9, 2002
    Assignee: Raytheon Company
    Inventor: Eugene R. Peressini
  • Publication number: 20020057725
    Abstract: An optically-pumped laser having a gain medium configured to provide a low loss, three-dimensional integrated optical pump cavity that substantially confines optical pump radiation within the lasing volume, which is particularly useful for efficiently pumping solid state gain media that has low pump dopant concentration. The integrated pump cavity includes a plurality of boundaries contiguous with the gain medium. An optical pump source such as a laser diode array supplies optical pump radiation that is input into the gain medium through one or more pump cavity windows with a propagation direction transverse to a laser axis defined through the gain medium. In some embodiments, an optical surface is situated opposite the window to approximately recollimate the input pump radiation. The optical pump cavity may be designed to concentrate the optical pump radiation and approximately uniformly pump the entire volume of the lasing medium.
    Type: Application
    Filed: March 29, 2001
    Publication date: May 16, 2002
    Inventor: Eugene R. Peressini
  • Patent number: 4558450
    Abstract: A high power, electrically excited laser is disclosed wherein a laser gas is caused to flow through an excitation region in which an electric discharge is established along a direction transverse to the direction of flow of the laser gas between an anode and a porous cathode disposed on opposite sides of the excitation region, and wherein an electron beam is introduced into the excitation region along a direction parallel to the direction of the discharge. A first quantity of an auxiliary gas (preferably helium) having a normal glow current density at least an order of magnitude less than that of the laser gas is introduced into the upstream end of the excitation region adjacent to the cathode and caused to flow across the cathode surface along a direction parallel to that of the laser gas. A second quantity of the auxiliary gas is "bled" through the porous cathode and gradually added to the auxiliary gas stream flowing across the cathode surface.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: December 10, 1985
    Inventors: George Wakalopulos, Robert A. Hill, Eugene R. Peressini
  • Patent number: 4209689
    Abstract: A laser secure communications system is disclosed. The system utilizes a long laser cavity, the end reflecting members of which may be located many kilometers apart. One or more high gain laser amplifiers optically aligned within the long laser cavity provide the optical carrier energy. Laser oscillation only occurs if the remotely located end reflectors are optically aligned and if the laser gain is sufficient to overcome the round trip transmission loss. The optical carrier thus established is modulated and detected at either end of the laser cavity.
    Type: Grant
    Filed: June 4, 1969
    Date of Patent: June 24, 1980
    Assignee: Hughes Aircraft Company
    Inventors: Gary J. Linford, Eugene R. Peressini, Walter R. Sooy
  • Patent number: 3970962
    Abstract: A high power, cw, high pressure, electrically excited flowing gas laser is disclosed wherein a laser excitation transverse to the direction of gas flow is initiated by a uniform electron beam perpendicular to the gas flow direction. Laser gas supplied to a plenum chamber at a pressure substantially greater than atmospheric pressure is conditioned by a perforated plate nozzle to flow through the laser cavity in a uniform stream at the desired subsonic velocity. A variable angle diffuser is provided downstream from the laser cavity to decelerate and compress the laser gas before exhausting it into the ambient atmosphere such that at the downstream end of the laser excitation region the laser gas is maintained at a pressure slightly lower than atmospheric pressure.
    Type: Grant
    Filed: November 7, 1974
    Date of Patent: July 20, 1976
    Assignee: Hughes Aircraft Company
    Inventors: Eugene R. Peressini, Robert A. Hill, James M. Kallis
  • Patent number: 3962656
    Abstract: A high power, cw, high pressure, electrically excited flowing gas laser is disclosed wherein a laser excitation transverse to the direction of gas flow is initiated by an electron beam perpendicular to the gas flow direction. The electron beam has a cross-sectional area conforming substantially to that of the excitation region and is especially profiled to have a cross-sectional electron density which varies as a function of distance along the direction of gas flow from substantially a minimum value at the upstream and downstream extremities of the excitation region to a maximum value approximately midway along the excitation region. This profiling, which may be achieved by tapered width apertures in either an electron beam window support member or in an electron gun grid, provides an appropriate heat input to the laser gas to minimize gas density variations in the excitation region and thereby optimize the beam quality of the generated laser beam.
    Type: Grant
    Filed: November 7, 1974
    Date of Patent: June 8, 1976
    Assignee: Hughes Aircraft Company
    Inventor: Eugene R. Peressini