Patents by Inventor Christopher M. Depriest

Christopher M. Depriest 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).

  • Laser system with multiple wavelength diode pump head and associated method
    Patent number: 7397828
    Abstract: A laser system comprises a reflective chamber capable of housing a laser medium and at least two laser diodes emitting light at different respective wavelengths into the reflective chamber. The wavelength of each respective laser diode may be selected to minimize fluctuations in absorption by the laser medium of light emitted by the diode bars as the wavelength of each respective laser diode changes due to changes in an operating temperature of the laser system. The wavelength of each respective laser diode may be selected such that absorption by the laser medium of the wavelength of light emitted by one laser diode increases and absorption by the laser medium of the wavelength of light emitted by another laser diode decreases as the operating temperature changes within a predefined range.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: July 8, 2008
    Assignee: Northrop Grumman Corporation
    Inventors: Christopher M. DePriest, Mark A. Decker, Matthew D. Hawk, Steven J. Lindauer, Laurance S. Lingvay, Gary D. Ross, Douglas P. Stanley
  • Ultralow noise optical clock for high speed sampling applications
    Patent number: 6735229
    Abstract: Methods and systems for using a laser type clock to produce a train of ultra-stable optical pulses. The methods and systems include generating an approximately 10 GHz ultralow noise pulse train from a harmonically modelocked laser having an intracavity Fabry-Perot etalon filter from a semiconductor lasers such as ring lasers, and the like. System output can have residual phase modulation(PM) noise values of approximately 18 fs and amplitude modulation(AM) noise values of approximately 0.05% RMS, and residual phase modulation(PM) noise values of approximately 94 fs and amplitude modulation(AM) noise values of approximately 0.05% RMS.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: May 11, 2004
    Assignee: University of Central Florida
    Inventors: Peter J. Delfyett, Tolga Yilmaz, Christopher M. Depriest
  • Photonic arbitrary waveform generation and RF and microwave synthesis with a modelocked external cavity semi-conductor laser
    Patent number: 6671298
    Abstract: Photonic arbitrary waveform methods and generation by manipulating the phase-locked longitudinal modes of an approximately 12.4 GHz fundamentally modelocked external-cavity semiconductor laser are demonstrated. Photonically synthesized sine waves (center frequency of approximately 37.2 GHz, linewidth less than approximately 100 Hz, dynamic range approximately 50 dB at approximately 100 Hz resolution bandwidth) and complex, arbitrarily shaped optical/microwave frequency waveforms with instantaneous bandwidths up to approximately 75 GHz are shown. A WDM filter can be used to separate individual longitudinal modes of a modelocked laser. Photonic arbitrary generation occurs through the modulation of individual channels before recombining the channels, followed by amplifying the output.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: December 30, 2003
    Assignee: University of Central Florida
    Inventors: Peter J. Delfyett, Tolga Yilmaz, Christopher M. Depriest