Patents by Inventor Jay W. Dawson
Jay W. Dawson 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: 11909166Abstract: The present technology provides large mode area optical fibers engineered to have normal dispersion around 1600 nm, enabling high power Raman amplification at eye safer wavelengths. The fibers can have a main core and one or more side cores disposed relative to the main core so that modes of the main core and the one or more side cores hybridize into supermodes with modified dispersion.Type: GrantFiled: May 11, 2021Date of Patent: February 20, 2024Assignee: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Paul H. Pax, Jay W. Dawson, Victor V. Khitrov, Cody W. Mart, Michael J. Messerly, Michael Runkel, Charles X. Yu
-
Patent number: 11655183Abstract: The present disclosure relates to a method for forming a glass, ceramic or composite material. The method may involve initially forming a plurality of tubes and then performing a coating operation to coat the plurality of tubes with materials containing metal or metalloid elements, including inorganic compounds, organometallic compounds, or coordination complexes to form coated tubes. The method may further include performing at least one of a thermal operation or a thermochemical operation on the coated tubes to form a solid glass, ceramic, or composite structure with dimensions representing at least one of a rod or fiber.Type: GrantFiled: June 11, 2020Date of Patent: May 23, 2023Assignee: Lawrence Livermore National Security, LLCInventors: Andrew Lange, Jay W. Dawson, Rebecca Dylla-Spears, Cody Wren Mart, Michael J. Messerly, Koroush Sasan, Nick Schenkel, Tayyab I. Suratwala
-
Patent number: 11460639Abstract: An all fiber wavelength selective coupler provides wavelength selective transfer of optical energy between two or more separated waveguides. The coupler includes signal cores that are separated enough that they can be fusion spliced to standard fibers as lead-in and lead-out pigtails. A bridge between the signal cores facilitates transfer of the optical energy through a process of evanescent coupling. In one example, the bridge is formed of a series of graded index cores.Type: GrantFiled: June 18, 2019Date of Patent: October 4, 2022Assignee: Lawrence Livermore National Security, LLCInventors: Graham S. Allen, Diana C. Chen, Matthew J. Cook, Robert P. Crist, Derrek R. Drachenberg, Jay W. Dawson, Victor V. Khitrov, Leily Kiani, Michael J. Messerly, Paul H. Pax, Nick Schenkel
-
Patent number: 11374378Abstract: The present disclosure relates to an optical waveguide system. The system has a first waveguide having a core-guide and a cladding material portion surrounding and encasing the core-guide to form a substantially D-shaped cross sectional profile with an exposed flat section running along a length thereof. The core-guide enables a core-guide mode for an optical pulse signal having a first characteristic, travelling through the core-guide. A material layer of non-linear material is used which forms a second waveguide. The material layer is disposed on the exposed flat section of the cladding material portion. The material layer forms a plasmonic device to achieve a desired coupling with the core-guide to couple optical energy travelling through the core-guide into the material layer to modify the optical energy travelling through the core-guide such that the optical energy travelling through the core-guide has a second characteristic different from the first characteristic.Type: GrantFiled: August 21, 2020Date of Patent: June 28, 2022Assignees: Lawrence Livermore National Security, LLC, Board of Visitors of Norfolk State UniversityInventors: Eyal Feigenbaum, Graham S. Allen, Jay W. Dawson, Mikhail A. Noginov
-
Patent number: 11340396Abstract: A class of fibers is described that have a non-circular cross section on one or both ends that can by optimized to capture the optical radiation from a laser diode or diode array and deliver the light in the same or different shape on the opposite end of the fiber. A large multimode rectangular waveguide may be provided which can accept the radiation from a high-power diode bar and transform it into a circular cross section on the opposite end, while preserving brightness.Type: GrantFiled: July 5, 2018Date of Patent: May 24, 2022Assignee: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Derrek R. Drachenberg, Graham S. Allen, Diana C. Chen, Matthew J. Cook, Robert P. Crist, Jay W. Dawson, Leily Kiani, Michael J. Messerly, Paul H. Pax, Nick Schenkel, Charles X. Yu
-
Patent number: 11269137Abstract: A non-radial array of microstructure elements provides enhanced wavelength selective filtering. The elements are arranged along a line that does not intersect the center of the core. In this configuration, the first coupling element in an array that is nearest to the core is a non-integer array unit spacing from the main waveguide where the array unit spacing is defined as the flat to flat distance of a hexagonal cell.Type: GrantFiled: May 29, 2020Date of Patent: March 8, 2022Assignee: Lawrence Livermore National Security, LLCInventors: Leily S. Kiani, Jay W. Dawson, Derrek R. Drachenberg, Michael J. Messerly, Paul H. Pax
-
Publication number: 20210387903Abstract: The present disclosure relates to a method for forming a glass, ceramic or composite material. The method may involve initially forming a plurality of tubes and then performing a coating operation to coat the plurality of tubes with materials containing metal or metalloid elements, including inorganic compounds, organometallic compounds, or coordination complexes to form coated tubes. The method may further include performing at least one of a thermal operation or a thermochemical operation on the coated tubes to form a solid glass, ceramic, or composite structure with dimensions representing at least one of a rod or fiber.Type: ApplicationFiled: June 11, 2020Publication date: December 16, 2021Inventors: Andrew LANGE, Jay W. DAWSON, Rebecca DYLLA-SPEARS, Cody Wren MART, Michael J. MESSERLY, Koroush SASAN, Nick SCHENKEL, Tayyab I. SURATWALA
-
Publication number: 20210373229Abstract: A non-radial array of microstructure elements provides enhanced wavelength selective filtering. The elements are arranged along a line that does not intersect the center of the core. In this configuration, the first coupling element in an array that is nearest to the core is a non-integer array unit spacing from the main waveguide where the array unit spacing is defined as the flat to flat distance of a hexagonal cell.Type: ApplicationFiled: May 29, 2020Publication date: December 2, 2021Applicant: Lawrence Livermore National Security, LLCInventors: Leily S. Kiani, Jay W. Dawson, Derrek R. Drachenberg, Michael J. Messerly, Paul H. Pax
-
Publication number: 20210359484Abstract: The present technology provides large mode area optical fibers engineered to have normal dispersion around 1600 nm, enabling high power Raman amplification at eye safer wavelengths. The fibers can have a main core and one or more side cores disposed relative to the main core so that modes of the main core and the one or more side cores hybridize into supermodes with modified dispersion.Type: ApplicationFiled: May 11, 2021Publication date: November 18, 2021Inventors: Paul H. Pax, Jay W. Dawson, Victor V. Khitrov, Cody W. Mart, Michael J. Messerly, Michael Runkel, Charles X. Yu
-
Patent number: 11095085Abstract: The present disclosure relates to a laser system. The laser system may have at least non-flat gain media disc. At least one pump source may be configured to generate a beam that pumps the non-flat gain media disc. A laser cavity may be formed by the pump source and the non-flat gain media disc. An output coupler may be included for receiving and directing the output beam toward an external component.Type: GrantFiled: January 25, 2018Date of Patent: August 17, 2021Assignees: Lawrence Livermore National Security, LLC, The Government of the United States as represented by the Secretary of the NavyInventors: Jay W. Dawson, Ronald Lacomb
-
Patent number: 10978849Abstract: A high-power laser beam with an arbitrary intensity profile is produced. Such beam has a variety of uses including for laser materials processing such as powder bed fusion additive manufacturing. Several challenges in additive manufacturing are mitigated with the present non-uniform intensity laser profiles. Nonuniform shapes include a set of intensity pixels in a line that could print a wide stripe area instead of just a single line. One example uses the multimode interference pattern from the output of a ribbon fiber which is imaged onto a work piece. The interference pattern is controlled to allow turning on or off of ‘pixels’ along a line which can be used to shape the beam and form the additively manufactured part.Type: GrantFiled: January 31, 2019Date of Patent: April 13, 2021Assignee: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Derrek R. Drachenberg, Jay W. Dawson, Gabriel M. Guss, Paul H. Pax, Alexander M. Rubenchik, Manyilibo J. Matthews
-
Publication number: 20210057870Abstract: The present disclosure relates to an optical waveguide system. The system has a first waveguide having a core-guide and a cladding material portion surrounding and encasing the core-guide to form a substantially D-shaped cross sectional profile with an exposed flat section running along a length thereof. The core-guide enables a core-guide mode for an optical pulse signal having a first characteristic, travelling through the core-guide. A material layer of non-linear material is used which forms a second waveguide. The material layer is disposed on the exposed flat section of the cladding material portion. The material layer forms a plasmonic device to achieve a desired coupling with the core-guide to couple optical energy travelling through the core-guide into the material layer to modify the optical energy travelling through the core-guide such that the optical energy travelling through the core-guide has a second characteristic different from the first characteristic.Type: ApplicationFiled: August 21, 2020Publication date: February 25, 2021Inventors: Eyal FEIGENBAUM, Graham S. ALLEN, Jay W. DAWSON, Mikhail A. NOGINOV
-
Patent number: 10897116Abstract: A uniform temperature profile is provided across the width of the core of a ribbon fiber laser or amplifier by the use of insulating elements at the core edges and a spatially variable gain in the fiber core. High average power ribbon fibers, enable a variety of applications such as practical laser cutting and beam combining.Type: GrantFiled: December 26, 2017Date of Patent: January 19, 2021Assignee: Lawrence Livermore National Security, LLCInventors: Derrek R. Drachenberg, Jay W. Dawson, Michael J. Messerly, Paul H. Pax
-
Patent number: 10756503Abstract: The present disclosure relates to an optical waveguide system. The system may include a first waveguide having a core-guide and a material portion surrounding and encasing the core-guide. The core-guide enables a core-guide mode for an optical signal travelling through the core-guide. A second waveguide forms a lossy waveguide on an outer surface of the first waveguide. The construction of the second waveguide is such as to achieve a desired coupling between the core-guide mode and the lossy waveguide to control an energy level of the optical signal travelling through the core-guide.Type: GrantFiled: July 17, 2018Date of Patent: August 25, 2020Assignee: Lawrence Livermore National Security, LLCInventors: Eyal Feigenbaum, Graham S. Allen, Jay W. Dawson, Mikhail A. Noginov
-
Publication number: 20200251872Abstract: A high-power laser beam with an arbitrary intensity profile is produced. Such beam has a variety of uses including for laser materials processing such as powder bed fusion additive manufacturing. Several challenges in additive manufacturing are mitigated with the present non-uniform intensity laser profiles. Nonuniform shapes include a set of intensity pixels in a line that could print a wide stripe area instead of just a single line. One example uses the multimode interference pattern from the output of a ribbon fiber which is imaged onto a work piece. The interference pattern is controlled to allow turning on or off of ‘pixels’ along a line which can be used to shape the beam and form the additively manufactured part.Type: ApplicationFiled: January 31, 2019Publication date: August 6, 2020Applicant: Lawrence Livermore National Security, LLC.Inventors: Derrek R. Drachenberg, Jay W. Dawson, Gabriel M. Guss, Paul H. Pax, Alexander M. Rubenchik, Manyilibo J. Matthews
-
Publication number: 20200132925Abstract: A class of fibers is described that have a non-circular cross section on one or both ends that can by optimized to capture the optical radiation from a laser diode or diode array and deliver the light in the same or different shape on the opposite end of the fiber. A large multimode rectangular waveguide may be provided which can accept the radiation from a high-power diode bar and transform it into a circular cross section on the opposite end, while preserving brightness.Type: ApplicationFiled: July 5, 2018Publication date: April 30, 2020Applicant: Lawrence Livermore National Security, LLCInventors: Derrek R. Drachenberg, Graham S. Alien, Diana C. Chen, Matthew J. Cook, Robert P. Crist, Jay W. Dawson, Leily Kiani, Michael J. Messerly, Paul H. Pax, Nick Schenkel, Charles X. Yu, Victor V. Khitrov
-
Publication number: 20200028315Abstract: The present disclosure relates to an optical waveguide system. The system may include a first waveguide having a core-guide and a material portion surrounding and encasing the core-guide. The core-guide enables a core-guide mode for an optical signal travelling through the core-guide. A second waveguide forms a lossy waveguide on an outer surface of the first waveguide. The construction of the second waveguide is such as to achieve a desired coupling between the core-guide mode and the lossy waveguide to control an energy level of the optical signal travelling through the core-guide.Type: ApplicationFiled: July 17, 2018Publication date: January 23, 2020Inventors: Eyal FEIGENBAUM, Graham S. ALLEN, Jay W. DAWSON, Mikhail A. NOGINOV
-
Publication number: 20190393667Abstract: The present disclosure relates to a laser system. The laser system may have at least non-flat gain media disc. At least one pump source may be configured to generate a beam that pumps the non-flat gain media disc. A laser cavity may be formed by the pump source and the non-flat gain media disc. An output coupler may be included for receiving and directing the output beam toward an external component.Type: ApplicationFiled: January 25, 2018Publication date: December 26, 2019Applicants: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC, THE GOVERNMENT OF UNITED STATES AS REPRESENTED BY THE SECRETARY OF THE NAVYInventors: Jay W. DAWSON, Ronald LACOMB
-
Publication number: 20190310420Abstract: An all fiber wavelength selective coupler provides wavelength selective transfer of optical energy between two or more separated waveguides. The coupler includes signal cores that are separated enough that they can be fusion spliced to standard fibers as lead-in and lead-out pigtails. A bridge between the signal cores facilitates transfer of the optical energy through a process of evanescent coupling. In one example, the bridge is formed of a series of graded index cores.Type: ApplicationFiled: June 18, 2019Publication date: October 10, 2019Applicant: Lawrence Livermore National Security, LLCInventors: Graham S. Allen, Diana C. Chen, Matthew J. Cook, Robert P. Crist, Derrek R. Drachenberg, Jay W. Dawson, Victor V. Khitrov, Leily Kiani, Michael J. Messerly, Paul H. Pax, Nick Schenkel
-
Patent number: 10348050Abstract: An Nd3+ optical fiber laser and amplifier operating in the wavelength range from 1300 to 1450 nm is described. The fiber includes a rare earth doped optical amplifier or laser operating within this wavelength band is based upon an optical fiber that guides light in this wavelength band. The waveguide structure attenuates light in the wavelength range from 850 nm to 950 nm and from 1050 nm to 1150 nm.Type: GrantFiled: October 7, 2016Date of Patent: July 9, 2019Assignee: Lawrence Livermore National Security, LLCInventors: Jay W Dawson, Graham S Allen, Derrek Reginald Drachenberg, Victor V Khitrov, Michael J Messerly, Paul H Pax, Nick Schenkel