Patents by Inventor Steve A. Johnson

Steve A. Johnson 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: 6185024
    Abstract: A plurality of copper lasers, as radiant power sources, emits a beam of power carrying radiation. A plurality of fiber injection assemblies receives power from the plurality of copper lasers and injects such power into a plurality of fibers for individually transmitting the received power to a plurality of power-receiving devices. The power-transmitting fibers of the system are so arranged that power is delivered therethrough to each of the power-receiving devices such that, even if a few of the radiant power sources and/or fibers fail, the power supply to any of the power receiving devices will not completely drop to zero but will drop by the same proportionate amount.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: February 6, 2001
    Assignee: United States Enrichment Corporation
    Inventors: Steve A. Johnson, Ronald Edward English, Jr., Ronald K. White
  • Patent number: 5381439
    Abstract: A laser beam dividing apparatus (10) having a first beam splitter (14) with an aperture (16) therein positioned in the path of a laser beam (12) such that a portion of the laser beam (12) passes through the aperture (16) onto a second beam splitter (20) and a portion of the laser beam (12) impinges upon the first beam splitter (14). Both the first beam splitter (14) and the second beam splitter (20) are, optionally, made from a dichroic material such that a green component (24) of the laser beam (12) is reflected therefrom and a yellow component (26) is refracted therethrough. The first beam splitter (14) and the second beam splitter (20) further each have a plurality of facets (22) such that the components (24, 26) are reflected and refracted in a number equaling the number of facets (22).
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: January 10, 1995
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: R. Edward English, Jr., Steve A. Johnson
  • Patent number: 5355387
    Abstract: An interface module (10) for transverse energy input to dye laser modules is provided particularly for the purpose of delivering enhancing transverse energy beams (36) in the form of illumination bar (54) to the lasing zone (18) of a dye laser device, in particular to a dye laser amplifier (12). The preferred interface module (10) includes an optical fiber array (30) having a plurality of optical fibers (38) arrayed in a co-planar fashion with their distal ends (44) receiving coherent laser energy from an enhancing laser source (46), and their proximal ends (4) delivered into a relay structure (3). The proximal ends (42) of the optical fibers (38) are arrayed so as to be coplanar and to be aimed generally at a common point. The transverse energy beam array (36) delivered from the optical fiber array (30) is acted upon by an optical element array (34) to produce an illumination bar (54) which has a cross section in the form of a elongated rectangle at the position of the lasing window (18).
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: October 11, 1994
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Ronald E. English, Jr., Steve A. Johnson
  • Patent number: 4933949
    Abstract: An arrangement especially suitable for use in a laser apparatus for converting a plurality of different input light beams, for example copper vapor laser beams, into a plurality of substantially identical light beams is disclosed herein. This arrangement utilizes an optical mixing bar which is preferably integrally formed as a single unit and which includes a main body for mixing light therein, a flat input surface on one end of the main body, and a multi-faceted output face on the opposite end of the main body. This arrangement also includes means for directing the plurality of different input light beams onto the input face of the mixing base, whereby to cause the different beams to mix within the main body of the mixing bar and exit the latter from its multi-faceted output face as the desired plurality of substantially identical output beams.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: June 12, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Steve A. Johnson
  • Patent number: 4673290
    Abstract: Diagnostic apparatus for use in determining the proper alignment of a plurality of laser beams onto a fiber optics interface is disclosed. The apparatus includes a lens assembly which serves two functions, first to focus a plurality of laser beams onto the fiber optics interface, and secondly to reflect and image the interface using scattered light to a monitor means. The monitor means permits indirect observation of the alignment or focusing of the laser beams onto the fiber optics interface.
    Type: Grant
    Filed: January 18, 1985
    Date of Patent: June 16, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Steve A. Johnson, Robert R. Shannon
  • Patent number: 4627068
    Abstract: A dye laser oscillator in which one light beam is used to pump a continuous tream of dye within a cooperating dye chamber for producing a second, different beam is generally disclosed herein along with a specific arrangement including an optical fiber and a fiber optics interface for directing the pumping beam into the dye chamber. The specific fiber optics interface illustrated includes three cooperating lenses which together image one particular dimension of the pumping beam into the dye chamber from the output end of the optical fiber in order to insure that the dye chamber is properly illuminated by the pumping beam.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: December 2, 1986
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Steve A. Johnson, Lynn G. Seppala