Patents by Inventor Mahmoud Fallahi

Mahmoud Fallahi 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).

  • Publication number: 20240012071
    Abstract: A magnetometer device structured to measure a magnetic field while minimizing an effect of vibration on output. The device may comprise a laser cavity network containing a plurality of spatially-distinct cavity arms, each comprising a gain chip configured to generate a laser beam towards one or more optical elements disposed optically in line with the laser beam, configured to direct the laser beam towards a nitrogen vacancy (NV) diamond. The device may further comprise the NV diamond, configured to accept a plurality of laser beams of the plurality of cavity arms without a common output coupler, preventing the plurality of laser beams from spatially overlapping, and measure the magnetic field in response to the plurality of laser beams. The device may further comprise a reflective element for reflecting each laser beam back into each cavity arm.
    Type: Application
    Filed: July 5, 2023
    Publication date: January 11, 2024
    Inventors: Chris Hessenius, Mahmoud Fallahi
  • Publication number: 20230120953
    Abstract: The present invention describes a laser system for eliminating astigmatism to produce an elliptical laser beam that has an ellipticity between about 0.9 to 1.0. The laser system described herein allows for increased conversion efficiency and output powers. on-linear optical elements in the laser system eliminate astigmatism. The laser system comprises one or more cavities with wavelength splitters that act as dual-minor chambers for single-pass light transmission through the non-linear optical elements to reduce cavity size or as beam splitters for double-pass light transmission through the non-linear optical elements to increase laser output power. The laser system may also include a birefringent filter and/or etalon in the first cavity for polarization and wavelength tuning. The laser system may also generate a high-power, deep-ultraviolet laser output. The laser system may also be devoid of curved mirrors and non-normal incidence reflection to eliminate astigmatism.
    Type: Application
    Filed: January 25, 2021
    Publication date: April 20, 2023
    Inventors: Chris Hessenius, Mahmoud Fallahi
  • Patent number: 11611194
    Abstract: A collinear T-cavity VECSEL system generating intracavity Hermite-Gaussian modes at multiple wavelengths, configured to vary each of these wavelengths individually and independently. A mode converter element and/or an astigmatic mode converter is/are aligned intracavity to reversibly convert the Gaussian modes to HG modes to Laguerre-Gaussian modes, the latter forming the system output having any of the wavelengths provided by the spectrum resulting from nonlinear frequency-mixing intracavity (including generation of UV, visible, mid-IR light). The laser system delivers Watt-level output power in tunable high-order transverse mode distribution.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: March 21, 2023
    Assignee: Arizona Board of Regents on behalf of The University of Arizona
    Inventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
  • Patent number: 11431150
    Abstract: A vertical external cavity surface emitting laser (VECSEL) based system in a linear single cavity configuration is configured to deliver light in higher-order Hermite-Gaussian transverse modes with Watt-level output power. Simultaneous and independent lasing of spatially-restructurable multiple high-order transverse modes that are collinearly-propagating at the output of such laser cavity is facilitated with the use of an optical pumping scheme devised to control positions of location at which the gain medium of the system is pumped (e.g., locations of focal spots of multiple pump beams on the gain-medium chip). An external astigmatic mode converter is utilized to convert such high-order Hermite-Gaussian modes into corresponding Laguerre-Gaussian modes.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: August 30, 2022
    Assignee: Arizona Board of Regents on behalf of the University of Arizona
    Inventors: Chris Hessenius, Mahmoud Fallahi, Michal L. Lukowski
  • Publication number: 20220045480
    Abstract: A vertical external cavity surface emitting laser (VECSEL) based system in a linear single cavity configuration is configured to deliver light in higher-order Hermite-Gaussian transverse modes with Watt-level output power. Simultaneous and independent lasing of spatially-restructurable multiple high-order transverse modes that are collinearly-propagating at the output of such laser cavity is facilitated with the use of an optical pumping scheme devised to control positions of location at which the gain medium of the system is pumped (e.g., locations of focal spots of multiple pump beams on the gain-medium chip). An external astigmatic mode converter is utilized to convert such high-order Hermite-Gaussian modes into corresponding Laguerre-Gaussian modes.
    Type: Application
    Filed: February 18, 2020
    Publication date: February 10, 2022
    Inventors: Chris Hessenius, Mahmoud Fallahi, Michal L. Lukowski
  • Publication number: 20210210928
    Abstract: A collinear T-cavity VECSEL system generating intracavity Hermite-Gaussian modes at multiple wavelengths, configured to vary each of these wavelengths individually and independently. A mode converter element and/or an astigmatic mode converter is/are aligned intracavity to reversibly convert the Gaussian modes to HG modes to Laguerre-Gaussian modes, the latter forming the system output having any of the wavelengths provided by the spectrum resulting from nonlinear frequency-mixing intracavity (including generation of UV, visible, mid-IR light). The laser system delivers Watt-level output power in tunable high-order transverse mode distribution.
    Type: Application
    Filed: March 23, 2021
    Publication date: July 8, 2021
    Inventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
  • Patent number: 10992108
    Abstract: A collinear T-cavity VECSEL system generating intracavity Hermite-Gaussian modes at multiple wavelengths, configured to vary each of these wavelengths individually and independently. A mode converter element and/or an astigmatic mode converter is/are aligned intracavity to reversibly convert the Gaussian modes to HG modes to Laguerre-Gaussian modes, the latter forming the system output having any of the wavelengths provided by the spectrum resulting from nonlinear frequency-mixing intracavity (including generation of UV, visible, mid-IR light). The laser system delivers Watt-level output power in tunable high-order transverse mode distribution.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: April 27, 2021
    Assignee: Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
  • Publication number: 20200083666
    Abstract: A collinear T-cavity VECSEL system generating intracavity Hermite-Gaussian modes at multiple wavelengths, configured to vary each of these wavelengths individually and independently. A mode converter element and/or an astigmatic mode converter is/are aligned intracavity to reversibly convert the Gaussian modes to HG modes to Laguerre-Gaussian modes, the latter forming the system output having any of the wavelengths provided by the spectrum resulting from nonlinear frequency-mixing intracavity (including generation of UV, visible, mid-IR light). The laser system delivers Watt-level output power in tunable high-order transverse mode distribution.
    Type: Application
    Filed: November 13, 2019
    Publication date: March 12, 2020
    Inventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
  • Patent number: 10511145
    Abstract: A collinear T-cavity VECSEL system generating intracavity Hermite-Gaussian modes at multiple wavelengths, configured to vary each of these wavelengths individually and independently. A mode converter element and/or an astigmatic mode converter is/are aligned intracavity to reversibly convert the Gaussian modes to HG modes to Laguerre-Gaussian modes, the latter forming the system output having any of the wavelengths provided by the spectrum resulting from nonlinear frequency-mixing intracavity (including generation of UV, visible, mid-IR light). The laser system delivers Watt-level output power in tunable high-order transverse mode distribution.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: December 17, 2019
    Assignee: Arizona Board of Regents on behalf of the University of Arizon
    Inventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
  • Publication number: 20190312408
    Abstract: A collinear T-cavity VECSEL system generating intracavity Hermite-Gaussian modes at multiple wavelengths, configured to vary each of these wavelengths individually and independently. A mode converter element and/or an astigmatic mode converter is/are aligned intracavity to reversibly convert the Gaussian modes to HG modes to Laguerre-Gaussian modes, the latter forming the system output having any of the wavelengths provided by the spectrum resulting from nonlinear frequency-mixing intracavity (including generation of UV, visible, mid-IR light). The laser system delivers Watt-level output power in tunable high-order transverse mode distribution.
    Type: Application
    Filed: December 19, 2017
    Publication date: October 10, 2019
    Inventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
  • Patent number: 9231373
    Abstract: A laser device capable to simultaneously generate light at multiple wavelengths that are independently (and, optionally, simultaneously) tunable without a limit of how small a spectral separation between such wavelengths can be made is enabled with the use of a laser-cavity network that (i) contains multiple spatially-distinct laser cavity portions all of which have at least one spatial region of the cavity network in common and (ii) is defined by such optical elements that prevent the intracavity amplification of light at first and second of multiple wavelengths at the expense of the same laser gain medium. Each of the distinct cavity portions contains a dedicated laser chip supporting the generation of light at a corresponding wavelength. In a special case, at least two of the multiple lasing wavelengths in the output of the device can be simultaneously and independently tuned to become equal.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: January 5, 2016
    Assignee: The Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Mahmoud Fallahi, Chris Hessenius, Michal L. Lukowski
  • Publication number: 20150288141
    Abstract: A laser device capable to simultaneously generate light at multiple wavelengths that are independently (and, optionally, simultaneously) tunable without a limit of how small a spectral separation between such wavelengths can be made is enabled with the use of a laser-cavity network that (i) contains multiple spatially-distinct laser cavity portions all of which have at least one spatial region of the cavity network in common and (ii) is defined by such optical elements that prevent the intracavity amplification of light at first and second of multiple wavelengths at the expense of the same laser gain medium. Each of the distinct cavity portions contains a dedicated laser chip supporting the generation of light at a corresponding wavelength. In a special case, at least two of the multiple lasing wavelengths in the output of the device can be simultaneously and independently tuned to become equal.
    Type: Application
    Filed: September 9, 2013
    Publication date: October 8, 2015
    Applicant: The Arizona Board of Regents on Behalf of The University of Arizona
    Inventors: Mahmoud Fallahi, Chris Hessenius, Michal L. Lukowski
  • Publication number: 20130294467
    Abstract: A multi-wavelength VECSEL includes an active region comprising a plurality of semiconductor quantum wells having an intrinsically broadened gain with a wavelength selective filter disposed within the cavity to provide a laser output that oscillates at two or more separated wavelengths simultaneously. A non-linear crystal may be provided in the cavity to emit radiation at a frequency in the THz range that is the difference of the frequencies associated with two of the separated wavelengths.
    Type: Application
    Filed: December 21, 2009
    Publication date: November 7, 2013
    Inventors: Jerome V. Moloney, Mahmoud Fallahi, Stephan W. Koch, Martin Koch, Maik Scheller, Kai Baaske
  • Publication number: 20090274177
    Abstract: A laser apparatus includes a first surface-emitting laser device having an active region including at least one group of two or more quantum wells configured to generate photons and having an internal mirror configured to reflect the generated photons, and first and second opposing end cavity mirrors optically coupled to each other via the internal mirror of the first surface-emitting laser device and arranged to reflect the photons generated by the first surface-emitting laser device back to the first surface-emitting laser device to form a standing wave having a single antinode coincident with said at least one group of two or more quantum wells.
    Type: Application
    Filed: January 4, 2007
    Publication date: November 5, 2009
    Applicant: The Arizona BD of Reg on Behalf of The Univ of AZ
    Inventors: Li Fan, Mahmoud Fallahi, Jerome V. Moloney
  • Publication number: 20080013159
    Abstract: An optical device including: a first transparent substrate; a first electrode disposed on the first transparent substrate; a first mirror disposed on the first electrode; a high electro-optic coefficient polymer or sol-gel material disposed on the first mirror; a second mirror disposed on the high electro-optic coefficient polymer or sol-gel material and at least partially sandwiching the sol-gel material between the first and second mirrors; a second electrode disposed on the second mirror; and a second transparent substrate disposed on the second electrode.
    Type: Application
    Filed: June 26, 2007
    Publication date: January 17, 2008
    Applicant: THE ARIZONA BD OF REG ON BEHALF OF THE UNIV OF AZ
    Inventors: Mahmoud Fallahi, Nasser Peyghambarian, Robert Norwood
  • Patent number: 7079730
    Abstract: A hybrid optoelectronic device and method of producing the hybrid device in which the hybrid device includes a substrate with an input region configured to accept input light, a sol-gel glass multimode interference region coupled to and contiguous with the input region and configured to accept and replicate the input light as multiple self-images, and a sol-gel glass output region contiguous with the multimode region and configured to accept and to output the multiple self-images. Alternatively, the hybrid optoelectronic device includes a substrate with a photoelectronic device, a surface resonator including a light-emitting part of the photelectronic device and configured to resonate light from the photoelectronic device to produce a laser light, and a grating outcoupler contiguous with the surface resonator and configured to diffract the laser light outward from the grating outcoupler and to electrically vary an index of refraction of the outcoupler and change a direction of the diffracted laser light.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: July 18, 2006
    Assignee: The Arizona Board of Regents
    Inventors: Mahmoud Fallahi, Amir Fardad
  • Patent number: 6608950
    Abstract: An integrated optoelectronic device (1) includes a substrate (4), at least one optoelectronic component (2) provided on the substrate (4), and a waveguide (9a . . . 9n) provided on the substrate (4) and optically connected to the at least one optoelectronic component (2). The waveguide (9a . . . 9n) is made of a sol-gel glass. A method for making the integrated optoelectronic device (1) includes the steps of providing a substrate (4), providing at least one optoelectronic component (2) on the substrate (4), and providing at least one sol-gel glass waveguide (9a . . . 9n) on the substrate (4) and optically connected to the at least one optoelectronic component (2).
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: August 19, 2003
    Assignee: Northrop Grumman Corporation
    Inventors: Elizabeth T. Kunkee, David V. Forbes, James E. Leight, Mahmoud Fallahi
  • Publication number: 20020172894
    Abstract: A hybrid optoelectronic device and method of producing the hybrid device in which the hybrid device includes a substrate with an input region configured to accept input light, a sol-gel glass multimode interference region coupled to and contiguous with the input region and configured to accept and replicate the input light as multiple self-images, and a sol-gel glass output region contiguous with the multimode region and configured to accept and to output the multiple self-images. Alternatively, the hybrid optoelectronic device includes a substrate with a photoelectronic device, a surface resonator including a light-emitting part of the photelectronic device and configured to resonate light from the photoelectronic device to produce a laser light, and a grating outcoupler contiguous with the surface resonator and configured to diffract the laser light outward from the grating outcoupler and to electrically vary an index of refraction of the outcoupler and change a direction of the diffracted laser light.
    Type: Application
    Filed: April 30, 2002
    Publication date: November 21, 2002
    Applicant: The Arizona Board of Regents
    Inventors: Mahmoud Fallahi, Amir Fardad
  • Patent number: 6436613
    Abstract: A hybrid optoelectronic device and method of producing the hybrid device in which the hybrid device includes a substrate with an input region configured to accept input light, a sol-gel glass multimode interference region coupled to and contiguous with the input region and configured to accept and replicate the input light as multiple self-images, and a sol-gel glass output region contiguous with the multimode region and configured to accept and to output the multiple self-images. Alternatively, the hybrid optoelectronic device includes a substrate with a photoelectronic device, a surface resonator including a light-emitting part of the photelectronic device and configured to resonate light from the photoelectronic device to produce a laser light, and a grating outcoupler contiguous with the surface resonator and configured to diffract the laser light outward from the grating outcoupler and to electrically vary an index of refraction of the outcoupler and change a direction of the diffracted laser light.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: August 20, 2002
    Assignee: The Arizona Board of Regents
    Inventors: Mahmoud Fallahi, Amir Fardad
  • Publication number: 20020110308
    Abstract: An integrated optoelectronic device (1) includes a substrate(4), at least one optoelectronic component (2) provided on the substrate (4), and a waveguide (9a . . . 9n) provided on the substrate (4) and optically connected to the at least one optoelectronic component (2). The waveguide (9a . . . 9n) is made of a sol-gel glass. A method for making the integrated optoelectronic device (1) includes the steps of providing a substrate (4), providing at least one optoelectronic component (2) on the substrate (4), and providing at least one sol-gel glass waveguide (9a . . . 9n) on the substrate (4) and optically connected to the at least one optoelectronic component (2).
    Type: Application
    Filed: February 14, 2001
    Publication date: August 15, 2002
    Inventors: Elizabeth T. Kunkee, David V. Forbes, James E. Leight, Mahmoud Fallahi