Patents by Inventor Joachim Pupeza

Joachim Pupeza 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).

  • Methods and devices for measuring changes in the polarization response of a sample by field-resolved vibrational spectroscopy
    Patent number: 11199496
    Abstract: A method of measuring a polarization response of a sample (1), in particular a biological sample, comprises the steps of generating a sequence of excitation waves (2), irradiating the sample (1) with the sequence of excitation waves (2), including an interaction of the excitation waves (2) with the sample (1), so that a sequence of sample waves (3) is generated each including a superposition of a sample main pulse and a sample global molecular fingerprint (GMF) wave (EGMF(sample)(t)), irradiating a reference sample (1A) with the sequence of excitation waves (2), including an interaction of the excitation waves (2) with the reference sample (1A), so that a sequence of reference waves (3A) is generated each including a superposition of a reference main pulse and a reference GMF wave (EGMF(ref)(t)), optically separating a difference of the sample waves (3) and reference waves (3A) from GMF wave contributions which are common to both of the sample waves (3) and reference waves (3A) in space and/or time, and detec
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: December 14, 2021
    Assignees: Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V., Ludwig-Maximilians-Universitaet Muenchen
    Inventors: Ferenc Krausz, Hanieh Fattahi, Marinus Huber, Joachim Pupeza, Mihaela Zigman Kohlmaier
  • Optical resonator with direct geometric access to the optical axis
    Patent number: 8988766
    Abstract: The present invention relates to a stable optical cavity, in which an obstacle is formed or arranged on the optical axis in the form of a through-opening in one of the mirrors or of an input- or output-coupling element, in order to enable a direct geometric access to the optical axis. The mirrors of the cavity are arranged such that a degeneracy of a plurality of transverse eigenmodes of the cavity occurs without an obstacle, by the combination of which an intensity minimum is obtained in the cavity with an obstacle at the position of the through-opening or of the input- or output-coupling element. With this configuration an optical cavity of high finesse which has a position of maximum intensity on the optical axis can be realized.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: March 24, 2015
    Assignees: Fraunhofer-Gelleschaft zur Foerderung der angewandten Forschung e.V., Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V., RWTH Aachen
    Inventors: Peter Russbuldt, Johannes Weitenberg, Joachim Pupeza, Thomas Udem
  • OPTICAL RESONATOR WITH DIRECT GEOMETRIC ACCESS TO THE OPTICAL AXIS
    Publication number: 20140002892
    Abstract: The present invention relates to a stable optical cavity, in which an obstacle is formed or arranged on the optical axis in the form of a through-opening in one of the mirrors or of an input- or output-coupling element, in order to enable a direct geometric access to the optical axis. The mirrors of the cavity are arranged such that a degeneracy of a plurality of transverse eigenmodes of the cavity occurs without an obstacle, by the combination of which an intensity minimum is obtained in the cavity with an obstacle at the position of the through-opening or of the input- or output-coupling element. With this configuration an optical cavity of high finesse which has a position of maximum intensity on the optical axis can be realized.
    Type: Application
    Filed: December 21, 2011
    Publication date: January 2, 2014
    Inventors: Peter Russbuldt, Johannes Weitenberg, Joachim Pupeza, Thomas Udem