Patents by Inventor Masood Ghotbi

Masood Ghotbi 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).

  • Optical parametric oscillator
    Patent number: 8094368
    Abstract: A synchronously-pumped optical parametric oscillator (OPO 10) driven by the second harmonic output of a Kerr-lens-mode-locked Ti:sapphire laser (12) generates femtosecond pulses with wide tunability in the visible and ultraviolet spectrum. The OPO uses bismuth triborate, BiB3O6 (or BIBO) or a substituted form thereof, in collinear critical phase-matching as the nonlinear gain crystal (24). Using simple crystal rotation at room temperature, a continuous tuning range from 480 nm to 710 nm is achieved with a single BIBO crystal (24) and a single set of mirrors (26, 28, 30) for the OPO cavity. The OPO (10) generates up to 27 OmW of average power across the available tuning range and can deliver femtosecond pulses at a repetition rate of 76 MHz.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: January 10, 2012
    Assignees: Institut de Ciencies Fotoniques, Fundacio Privada, Institucio Catalana de Recerca I Estudis Avancats
    Inventors: Majid Ebrahim-Zadeh, Masood Ghotbi
  • OPTICAL PARAMETRIC OSCILLATOR
    Publication number: 20100060976
    Abstract: A synchronously-pumped optical parametric oscillator (OPO 10) driven by the second harmonic output of a Kerr-lens-mode-locked Ti:sapphire laser (12) generates femtosecond pulses with wide tunability in the visible and ultraviolet spectrum. The OPO uses bismuth triborate, BiB3O6 (or BIBO) or a substituted form thereof, in collinear critical phase-matching as the nonlinear gain crystal (24). Using simple crystal rotation at room temperature, a continuous tuning range from 480 nm to 710 nm is achieved with a single BIBO crystal (24) and a single set of mirrors (26, 28, 30) for the OPO cavity. The OPO (10) generates up to 27 OmW of average power across the available tuning range and can deliver femtosecond pulses at a repetition rate of 76 MHz.
    Type: Application
    Filed: May 15, 2007
    Publication date: March 11, 2010
    Applicants: INSTITUT DE CIENCIES FOTONIQUES. FUNDACIO PRIVADA, INSTITUCIO CATALANA DE RECERCA I ESTUDIS AVANCATS
    Inventors: Majid Ebrahim-Zadeh, Masood Ghotbi