Patents Represented by Attorney M. A. Valdes

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  • Laser frequency modulator for modulating a laser cavity
    Patent number: 5132979
    Abstract: The present invention relates to a laser frequency modulator for modulating a laser cavity. It is known in the prior art to utilize a PZT (piezoelectric transducer) element in combination with a mirror to change the cavity length of a laser cavity (which changes the laser frequency). Using a PZT element to drive the mirror directly is adequate at frequencies below 10 kHz. However, in high frequency applications (100 kHz and higher) PZT elements alone do not provide a sufficient change in the cavity length.The present invention utilizes an ultrasonic concentrator with a PZT element and mirror to provide modulation of the laser cavity. With an ultrasonic concentrator, the mirror element at the end of a laser cavity can move at larger amplitudes and higher frequencies.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: July 21, 1992
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Gaylen V. Erbert
  • Post regulation circuit with energy storage
    Patent number: 5124629
    Abstract: A charge regulation circuit provides regulation of an unregulated voltage supply and provides energy storage. The charge regulation circuit according to the present invention provides energy storage without unnecessary dissipation of energy through a resistor as in prior art approaches.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: June 23, 1992
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Don G. Ball, Daniel L. Birx, Edward G. Cook
  • Charge regulation circuit
    Patent number: 5124617
    Abstract: A charge regulation circuit provides regulation of an unregulated voltage supply in the range of 0.01%. The charge regulation circuit is utilized in a preferred embodiment in providing regulated voltage for controlling the operation of a laser.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: June 23, 1992
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Don G. Ball
  • Fluorinated laser dyes
    Patent number: 5111472
    Abstract: A novel class of dye is disclosed which is particularly efficient and stable for dye laser applications, lasing between 540 and 570 nm.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: May 5, 1992
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Peter R. Hammond, James F. Feeman