Patents by Inventor John A. Dutcher

John A. Dutcher 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).

  • Diode pumped solid state laser
    Patent number: 4827485
    Abstract: A diode pumped Nd:YAG laser is disclosed wherein the YAG laser rod is supported from the envelope of the pumping diode by means of telescoping glass tubes bonded together by means of u.v. curing adhesive. The diode pumped laser is supported from a heat sink via the intermediary of a pair of rotatable wedges for adjusting the tilt of the optical axis of the laser. A gradient refractive index lens focuses the pump radiation into the laser rod. The lens is adhered directly to the output window of the pump diode by means of refractive index matching adhesive.
    Type: Grant
    Filed: June 6, 1986
    Date of Patent: May 2, 1989
    Assignee: Lightwave Electronics Corp.
    Inventors: David G. Scerbak, Leonard P. Pearson, John A. Dutcher
  • Pulse shaper for an electro-optically Q-switched seeded laser
    Patent number: 4752931
    Abstract: A seeded electro-optically Q-switches laser includes a pulser for pulsing the Q-switch within the seeded laser. The Q-switch pulser includes a pulse-shaping network having a saturable core inductor connected in series with the flow of current to the Q-switch for causing the developed pulse voltage waveform in Q-switch to have an initially reduced rate of change to reduce unwanted Fourier frequency components of the seed optical radiation in the optical resonator of the slave laser, whereby enhanced single-mode operation of the slave laser is obtained with reduced seed power.
    Type: Grant
    Filed: August 4, 1986
    Date of Patent: June 21, 1988
    Assignee: Lightwave Electronics Co.
    Inventors: John A. Dutcher, David G. Scerbak