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).
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Publication number: 20240012071Abstract: 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: ApplicationFiled: July 5, 2023Publication date: January 11, 2024Inventors: Chris Hessenius, Mahmoud Fallahi
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Publication number: 20230120953Abstract: 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: ApplicationFiled: January 25, 2021Publication date: April 20, 2023Inventors: Chris Hessenius, Mahmoud Fallahi
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Patent number: 11611194Abstract: 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: GrantFiled: March 23, 2021Date of Patent: March 21, 2023Assignee: Arizona Board of Regents on behalf of The University of ArizonaInventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
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Patent number: 11431150Abstract: 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: GrantFiled: February 18, 2020Date of Patent: August 30, 2022Assignee: Arizona Board of Regents on behalf of the University of ArizonaInventors: Chris Hessenius, Mahmoud Fallahi, Michal L. Lukowski
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Publication number: 20220045480Abstract: 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: ApplicationFiled: February 18, 2020Publication date: February 10, 2022Inventors: Chris Hessenius, Mahmoud Fallahi, Michal L. Lukowski
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Publication number: 20210210928Abstract: 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: ApplicationFiled: March 23, 2021Publication date: July 8, 2021Inventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
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Patent number: 10992108Abstract: 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: GrantFiled: November 13, 2019Date of Patent: April 27, 2021Assignee: Arizona Board of Regents on Behalf of the University of ArizonaInventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
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Publication number: 20200083666Abstract: 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: ApplicationFiled: November 13, 2019Publication date: March 12, 2020Inventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
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Patent number: 10511145Abstract: 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: GrantFiled: December 19, 2017Date of Patent: December 17, 2019Assignee: Arizona Board of Regents on behalf of the University of ArizonInventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
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Publication number: 20190312408Abstract: 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: ApplicationFiled: December 19, 2017Publication date: October 10, 2019Inventors: Mahmoud Fallahi, Ewan Wright, Chris Hessenius
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Patent number: 9231373Abstract: 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: GrantFiled: September 9, 2013Date of Patent: January 5, 2016Assignee: The Arizona Board of Regents on Behalf of the University of ArizonaInventors: Mahmoud Fallahi, Chris Hessenius, Michal L. Lukowski
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Publication number: 20150288141Abstract: 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: ApplicationFiled: September 9, 2013Publication date: October 8, 2015Applicant: The Arizona Board of Regents on Behalf of The University of ArizonaInventors: Mahmoud Fallahi, Chris Hessenius, Michal L. Lukowski
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Publication number: 20130294467Abstract: 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: ApplicationFiled: December 21, 2009Publication date: November 7, 2013Inventors: Jerome V. Moloney, Mahmoud Fallahi, Stephan W. Koch, Martin Koch, Maik Scheller, Kai Baaske
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Publication number: 20090274177Abstract: 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: ApplicationFiled: January 4, 2007Publication date: November 5, 2009Applicant: The Arizona BD of Reg on Behalf of The Univ of AZInventors: Li Fan, Mahmoud Fallahi, Jerome V. Moloney
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Publication number: 20080013159Abstract: 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: ApplicationFiled: June 26, 2007Publication date: January 17, 2008Applicant: THE ARIZONA BD OF REG ON BEHALF OF THE UNIV OF AZInventors: Mahmoud Fallahi, Nasser Peyghambarian, Robert Norwood
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Patent number: 7079730Abstract: 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: GrantFiled: April 30, 2002Date of Patent: July 18, 2006Assignee: The Arizona Board of RegentsInventors: Mahmoud Fallahi, Amir Fardad
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Patent number: 6608950Abstract: 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: GrantFiled: February 14, 2001Date of Patent: August 19, 2003Assignee: Northrop Grumman CorporationInventors: Elizabeth T. Kunkee, David V. Forbes, James E. Leight, Mahmoud Fallahi
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Publication number: 20020172894Abstract: 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: ApplicationFiled: April 30, 2002Publication date: November 21, 2002Applicant: The Arizona Board of RegentsInventors: Mahmoud Fallahi, Amir Fardad
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Patent number: 6436613Abstract: 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: GrantFiled: August 23, 2000Date of Patent: August 20, 2002Assignee: The Arizona Board of RegentsInventors: Mahmoud Fallahi, Amir Fardad
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Publication number: 20020110308Abstract: 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: ApplicationFiled: February 14, 2001Publication date: August 15, 2002Inventors: Elizabeth T. Kunkee, David V. Forbes, James E. Leight, Mahmoud Fallahi