Patents by Inventor Alexander George Boosalis

Alexander George Boosalis 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).

  • Patent number: 11346769
    Abstract: An ellipsometer uses a broadband light source and a Fresnel cone to produce a simultaneous broadband polarization state generator with no moving parts. The detector of the ellipsometer includes a diffractive element to spatially separate the wavelengths of the light from the sample. The wavelengths may be spatially separated sufficiently that there is no overlap of bands of wavelengths when imaged by a two-dimensional sensor or may be temporally separated. Additionally, the detector separates and simultaneously analyzes the polarizations states of the light from the sample so there is no overlap of polarization states when imaged by a two-dimensional sensor and no moving parts are used. The resulting image with separated wavelengths and polarization states may be used to determine at least a partial Mueller matrix for the sample.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: May 31, 2022
    Assignee: Onto Innovation Inc.
    Inventor: Alexander George Boosalis
  • Publication number: 20210262921
    Abstract: An ellipsometer uses a broadband light source and a Fresnel cone to produce a simultaneous broadband polarization state generator with no moving parts. The detector of the ellipsometer includes a diffractive element to spatially separate the wavelengths of the light from the sample. The wavelengths may be spatially separated sufficiently that there is no overlap of bands of wavelengths when imaged by a two-dimensional sensor or may be temporally separated. Additionally, the detector separates and simultaneously analyzes the polarizations states of the light from the sample so there is no overlap of polarization states when imaged by a two-dimensional sensor and no moving parts are used. The resulting image with separated wavelengths and polarization states may be used to determine at least a partial Mueller matrix for the sample.
    Type: Application
    Filed: February 20, 2020
    Publication date: August 26, 2021
    Inventor: Alexander George Boosalis