Patents by Inventor Judy Karin

Judy Karin 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).

  • Generation of high power optical pulses using flared mode-locked semiconductor lasers and optical amplifiers
    Patent number: 5802084
    Abstract: The mode-locked laser with improved pulse power output can be realized by combining an optical oscillator with a flared CW or modulated gain amplifier. An optical filter or isolator may be disposed between the oscillator and amplifier to avoid feedback of spontaneous noise. A two-segment laser is devised by providing a flared gain section between a modulated gain section and an absorber section within the integrated semiconductor laser. The flared section may taper from a larger modulated gain section to a smaller cross section absorber section or vice versa. Various combinations of absorber sections coupled to modulated gain sections by CW gain or passive flared gain sections may be combined with various arrangements of reflectors and tapered CW gain amplifiers are cascades of such amplifiers and modulated gain pairs.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: September 1, 1998
    Assignee: The Regents of the University of California
    Inventors: John E. Bowers, Alan Mar, Roger J. Helkey, Judy Karin
  • Generation of high power optical pulses using flared mode-locked semiconductor lasers and optical amplifiers
    Patent number: 5799024
    Abstract: The mode-locked laser with improved pulse power output can be realized by combining an optical oscillator with a flared CW or modulated gain amplifier. An optical filter or isolator may be disposed between the oscillator and amplifier to avoid feedback of spontaneous noise. A two-segment laser is devised by providing a flared gain section between a modulated gain section and an absorber section within the integrated semiconductor laser. The flared section may taper from a larger modulated gain section to a smaller cross section absorber section or vice versa. Various combinations of absorber sections coupled to modulated gain sections by CW gain or passive flared gain sections may be combined with various arrangements of reflectors and tapered CW gain amplifiers are cascades of such amplifiers and modulated gain pairs.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: August 25, 1998
    Assignee: The Regents of the University of California
    Inventors: John E. Bowers, Alan Mar, Roger J. Helkey, Judy Karin