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公开(公告)号：US12116662B2
公开(公告)日：2024-10-15
申请号：US17890913
申请日：2022-08-18
Applicant: HRL Laboratories, LLC
Inventor： Kyung-Ah Son , Jeong-Sun Moon , Hwa Chang Seo , Richard M. Kremer , Ryan G. Quarfoth , Jack A. Crowell , Mariano J. Taboada , Joshua M. Doria , Terry B. Welch
Abstract: A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (≥450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (
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公开(公告)号：US11788183B2
公开(公告)日：2023-10-17
申请号：US17206927
申请日：2021-03-19
Applicant: HRL Laboratories, LLC
Inventor： Kyung-Ah Son , Jeong-Sun Moon , Hwa Chang Seo , Richard M. Kremer , Ryan G. Quarfoth , Jack A. Crowell , Mariano J. Taboada , Joshua M. Doria , Terry B. Welch
Abstract: A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (≥450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (
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公开(公告)号：US20210149271A1
公开(公告)日：2021-05-20
申请号：US16951518
申请日：2020-11-18
Applicant: HRL Laboratories, LLC
Inventor： Jeong-Sun Moon , Ryan G. Quarfoth , Kangmu Lee
IPC: G02F1/295
Abstract: A vertical directional coupler or switch comprising a lower and an upper waveguide, integrated with an optical phase change material disposed between the lower and upper waveguides to control a directional of optical coupling between the lower and upper waveguides.
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公开(公告)号：US11710898B1
公开(公告)日：2023-07-25
申请号：US16888276
申请日：2020-05-29
Applicant: HRL Laboratories, LLC
Inventor： Ryan G. Quarfoth
CPC classification number: H01Q3/36 , H01Q9/0407 , H01Q21/08 , H03F3/19 , H03G3/3036 , H03F2200/451 , H03G2201/103
Abstract: An electronically scanned antenna comprising a travelling wave guiding structure having a bottom conductor and a top conductor developing each along a first direction, the top conductor comprising a plurality of first conductive patches arranged periodically along said first direction and connected in series by tuning circuits; the electronically scanned antenna further comprising a plurality of amplifiers arranged for compensating resistive and radiation losses along the length of the travelling wave guiding structure.
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公开(公告)号：US10451951B1
公开(公告)日：2019-10-22
申请号：US16054108
申请日：2018-08-03
Applicant: HRL Laboratories, LLC
Inventor： Daniel Yap , Ryan G. Quarfoth , Troy D. Rockwood
Abstract: A photonic modulator includes a first electro-optical waveguide, the first electro-optical waveguide having a first electro-optical waveguide side and a second electro-optical waveguide side opposite the first electro-optical waveguide side, a second electro-optical waveguide, the second electro-optical waveguide having a third electro-optical waveguide side and a fourth electro-optical waveguide side opposite the third electro-optical waveguide side, a first driven radio frequency electrode coupled to the first electro-optical waveguide side, a second driven radio frequency electrode coupled to the third electro-optical waveguide side, and a floating electrode coupled to the second electro-optical waveguide side and coupled to the fourth electro-optical waveguide side. The second electro-optical waveguide side and the third electro-optical waveguide side face each other and are spaced apart from one another.
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Patent Agency Ranking
公开(公告)号：US11038269B2
公开(公告)日：2021-06-15
申请号：US16519374
申请日：2019-07-23
Applicant: HRL Laboratories, LLC
Inventor： Ryan G. Quarfoth , Carson R. White
Abstract: A holographic antenna including a transmission line structure having a traveling wave mode along a length of the transmission line structure, and a plurality of reconfigurable radiating elements located along the length of the transmission line structure.
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公开(公告)号：US10955720B2
公开(公告)日：2021-03-23
申请号：US16296049
申请日：2019-03-07
Applicant: HRL Laboratories, LLC
Inventor： Kyung-Ah Son , Jeong-Sun Moon , Ryan G. Quarfoth
Abstract: An optical apparatus may comprise: an electrically reconfigurable optical layer comprising at least one phase-change material, wherein an optical property of the phase-change material is reconfigurable by an electric field; an optically transparent top electrode and a bottom electrode, the top and bottom electrodes configured to apply the electric field to the electrically reconfigurable optical layer, wherein the electrically reconfigurable optical layer is disposed between the optically transparent top electrode and the bottom electrode; and a colossal-K dielectric layer disposed between the electrically reconfigurable optical layer and the bottom electrode. The phase-change material of the electrically reconfigurable optical layer may comprise phase-change nickelate or tungsten oxide. The phase-change material of the electrically reconfigurable optical layer may have a perovskite structure. The phase-change nickelate or tungsten oxide may enable to actuate large refractive index changes of more than 1 in infrared wavelength spectrums at high speeds of phase reconfiguration of more than 1 kHz by applying the electric field to the phase-change material.
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公开(公告)号：US10886604B2
公开(公告)日：2021-01-05
申请号：US16225960
申请日：2018-12-19
Applicant: HRL Laboratories, LLC
Inventor： Ryan G. Quarfoth
Abstract: An interleaved array of electronically steerable antennas is capable of simultaneously operating and/or independently beam scanning at different frequencies from a single aperture. An antenna system may comprise a plurality of electronically steerable antennas configured to be operable at different frequencies, each of the antennas comprising a feed launching a surface wave and surface-wave waveguides connected to the feed. The surface-wave waveguides of the antennas operable at different frequencies may be interleaved with each other.
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公开(公告)号：US10811782B2
公开(公告)日：2020-10-20
申请号：US15965583
申请日：2018-04-27
Applicant: HRL Laboratories, LLC
Inventor： Ryan G. Quarfoth , Keerti S. Kona , Daniel Gregoire
Abstract: A holographic antenna has plurality of conductive elements arranged in a series of the conductive elements, the series of conductive elements being grouped a number of different groups of said conductive elements, each of conductive elements in each different group of conductive elements being connected via one or more tuning elements to a neighboring conductive element in each the different group of conductive elements, each different group of conductive elements comprising a holographic antenna element of said holographic antenna. A plurality of amplifiers wherein each one of the plurality of amplifiers is connected at one end of each one of the different groups of conductive elements; and a feed system coupling each of said amplifiers to a RF connection of the holographic antenna.
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公开(公告)号：US11231635B2
公开(公告)日：2022-01-25
申请号：US16951518
申请日：2020-11-18
Applicant: HRL Laboratories, LLC
Inventor： Jeong-Sun Moon , Ryan G. Quarfoth , Kangmu Lee
Abstract: A vertical directional coupler or switch comprising a lower and an upper waveguide, integrated with an optical phase change material disposed between the lower and upper waveguides to control a directional of optical coupling between the lower and upper waveguides.
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