Patents by Inventor Jethwa, Jaydev

Jethwa, Jaydev 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).

  • Apparatus for measuring the duration of single optical radiation pulses
    Patent number: 5068525
    Abstract: An apparatus for measuring the duration of single short optical radiation lses, particularly laser radiation pulses, by means of autocorrelation and two-photon ionization, contains a Mach-Zehnder interferometer (BS1, BS2, M1, M2) as beam splitter means for generating from a single input radiation pulse (10) two coherent component pulses (14, 16) propagating along two component beam paths (18, 20) each of which contains a section (18a20a) passing through a meausring zone (22) where they overlap, further a two-photon ionization detector having a measuring zone (22) and collector electrode means (36) and counter-electrode means (38) at which an electric output signal is available depending on the number of charge carriers generated in the measuring zone when the component beam pulses overlap, and a measuring system connected to the electrode means (36, 38).
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: November 26, 1991
    Assignee: Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.
    Inventors: Fritz P. Schaefer, Sandor Szatmari, Jethwa, Jaydev