Patents by Inventor Aidan Dominic Goggin
Aidan Dominic Goggin 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: 20240112696Abstract: A heat-assisted magnetic recording head includes a laser, a near-field transducer, a primary waveguide, a secondary waveguide, and a photodiode. The laser is configured to emit electromagnetic radiation. The near-field transducer is configured to focus and emit an optical near-field. The primary waveguide configured to receive the electromagnetic radiation and propagate the electromagnetic radiation toward and proximal to the near-field transducer. The secondary waveguide configured to receive a portion of the electromagnetic radiation from the primary waveguide. The photodiode configured to receive the portion of the electromagnetic radiation from the secondary waveguide and emit a signal that represents a magnitude of the electromagnetic radiation that the laser emits.Type: ApplicationFiled: December 13, 2023Publication date: April 4, 2024Inventors: Mark Anthony Gubbins, Christopher Neil Harvey, Aidan Dominic Goggin, Fadi El Hallak, Reshma Anamari Mohandas, Bryn John Howells, Scott Eugene Olson
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Publication number: 20240013806Abstract: A recording head includes a channel waveguide that delivers light to a media-facing surface. A near-field transducer (NFT) is at an end of the channel waveguide and proximate to the media-facing surface. A laser including an active region has a longitudinal axis corresponding to a propagation direction of the channel waveguide. The active region includes a back facet and a front facet proximate the NFT. The front facet has a surface shape configured to suppress back reflection of the light.Type: ApplicationFiled: September 21, 2023Publication date: January 11, 2024Inventors: Aidan Dominic Goggin, John Moloney, Reyad Mehfuz, Chuan Zhong, Christopher Neil Harvey
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Patent number: 11848036Abstract: An apparatus includes a substrate. A laser is deposited above the substrate. The laser includes one or more non-self-supporting layers of crystalline material. The laser has a length along a light path in a range of about 40 um to about 350 um. An optical input coupler is configured to receive light from the laser. A waveguide is deposited proximate the optical input coupler. The waveguide is configured to communicate light from the laser via the optical input coupler to a near-field transducer that directs energy resulting from plasmonic excitation to a recording medium.Type: GrantFiled: April 26, 2022Date of Patent: December 19, 2023Assignee: Seagate Technology LLCInventors: Reyad Mehfuz, Niall Donlon, Aidan Dominic Goggin, Prim Gangmei
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Patent number: 11837256Abstract: Described are heat assisted magnetic read-write heads that include a coupler, a waveguide, a transducer, and appurtenant structures, as well as related methods.Type: GrantFiled: June 28, 2022Date of Patent: December 5, 2023Assignee: Seagate Technology LLCInventors: Christopher Neil Harvey, Aidan Dominic Goggin, Chuan Zhong
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Patent number: 11817119Abstract: A recording head includes a channel waveguide that delivers light to a media-facing surface. A near-field transducer (NFT) is at an end of the channel waveguide and proximate to the media-facing surface. A laser including an active region has a longitudinal axis corresponding to a propagation direction of the channel waveguide. The active region includes a back facet and a front facet proximate the NFT. The front facet has a surface shape configured to suppress back reflection of the light.Type: GrantFiled: December 9, 2021Date of Patent: November 14, 2023Assignee: Seagate Technology LLCInventors: Aidan Dominic Goggin, John Moloney, Reyad Mehfuz, Chuan Zhong, Christopher Neil Harvey
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Patent number: 11443765Abstract: A write head includes an input coupler configured to receive light excited by a light source. A waveguide core is configured to receive light from the input coupler at a fundamental transverse electric (TE00) mode. The waveguide core has a first straight portion. The waveguide core has a mode converter portion comprising a branched portion extending from the first straight portion. The mode converter portion is configured to convert the light to a higher-order (TE10) mode, the mode converter portion spaced apart from the input coupler. The waveguide core has a second straight portion between the mode converter portion and a media-facing surface. The write head has a near-field transducer at the media-facing surface, the near-field transducer receiving the light at the TE10 mode from the waveguide and directing surface plasmons to a recording medium in response thereto.Type: GrantFiled: April 5, 2021Date of Patent: September 13, 2022Assignee: Seagate Technology LLCInventors: Reyad Mehfuz, Aidan Dominic Goggin, Pierre Asselin, Christopher Neil Harvey
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Patent number: 11328745Abstract: An apparatus includes a substrate. A laser is formed on a non-self supporting structure and bonded to the substrate. A waveguide having a gap portion is deposited proximate the laser. The waveguide is configured to communicate light from the laser to a near-field transducer (NFT) that directs energy resulting from plasmonic excitation to a recording medium. An optical isolator is disposed over the gap portion.Type: GrantFiled: June 29, 2021Date of Patent: May 10, 2022Assignee: Seagate Technology LLC.Inventors: John Bernard McGurk, Reyad Mehfuz, Christopher Neil Harvey, Aidan Dominic Goggin
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Patent number: 11328744Abstract: An apparatus comprises a substrate. A laser is deposited above the substrate. The laser includes one or more non-self-supporting layers of crystalline material. A metallic adhesive is disposed between the laser and the substrate. The metallic adhesive is configured to adhere the laser to the substrate. A waveguide is deposited proximate the laser. The waveguide is configured to receive light from the laser and direct the light to a recording medium.Type: GrantFiled: January 29, 2021Date of Patent: May 10, 2022Assignee: Seagate Technology LLCInventors: Fadi El Hallak, Michael Gerald Boyle, Paula Frances McElhinney, Marcus Benedict Mooney, Aidan Dominic Goggin, Cillian Macdara OBriain Fallon
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Publication number: 20220101879Abstract: A recording head includes a channel waveguide that delivers light to a media-facing surface. A near-field transducer (NFT) is at an end of the channel waveguide and proximate to the media-facing surface. A laser including an active region has a longitudinal axis corresponding to a propagation direction of the channel waveguide. The active region includes a back facet and a front facet proximate the NFT. The front facet has a surface shape configured to suppress back reflection of the light.Type: ApplicationFiled: December 9, 2021Publication date: March 31, 2022Inventors: Aidan Dominic Goggin, John Moloney, Reyad Mehfuz, Chuan Zhong, Christopher Neil Harvey
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Patent number: 11227633Abstract: A recording head includes a channel waveguide that delivers light to a media-facing surface. A near-field transducer (NFT) is at an end of the channel waveguide and proximate to the media-facing surface. A laser including an active region has a longitudinal axis corresponding to a propagation direction of the channel waveguide. The active region includes a back facet and a front facet proximate the NFT. The front facet has a surface shape configured to suppress back reflection of the light.Type: GrantFiled: October 28, 2020Date of Patent: January 18, 2022Assignee: Seagate Technology LLCInventors: Aidan Dominic Goggin, John Moloney, Reyad Mehfuz, Chuan Zhong, Christopher Neil Harvey
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Patent number: 11176962Abstract: A heat-assisted magnetic recording head includes a slider body having a waveguide that delivers light to a near-field transducer. The waveguide is optically coupled to an input coupler a of the slider body that receives the light. A laser diode is mounted on or in the slider body. The laser diode has an integral exit facet proximate the input coupler. The exit facet has a curved profile that modifies a shape of the light emitted from the exit facet into the input coupler.Type: GrantFiled: September 10, 2020Date of Patent: November 16, 2021Assignee: Seagate Technology LLCInventors: Aidan Dominic Goggin, Reyad Mehfuz, John Moloney
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Publication number: 20210327463Abstract: An apparatus includes a substrate. A laser is formed on a non-self supporting structure and bonded to the substrate. A waveguide having a gap portion is deposited proximate the laser. The waveguide is configured to communicate light from the laser to a near-field transducer (NFT) that directs energy resulting from plasmonic excitation to a recording medium. An optical isolator is disposed over the gap portion.Type: ApplicationFiled: June 29, 2021Publication date: October 21, 2021Inventors: John Bernard McGurk, Reyad Mehfuz, Christopher Neil Harvey, Aidan Dominic Goggin
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Patent number: 11120830Abstract: A recording head includes a substrate, a read transducer, a waveguide core, and a near-field transducer at an end of the waveguide core proximate a media-facing surface. The recording head includes a magnetic write pole and coil. A laser diode unit with one or more non-self-supporting layers of crystalline material region is transfer printed between layers of the recording head.Type: GrantFiled: July 30, 2020Date of Patent: September 14, 2021Assignee: Seagate Technology LLCInventors: Aidan Dominic Goggin, Mark Anthony Gubbins, Paula Frances McElhinney, Roger L. Hipwell, Jr., John Wolf
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Publication number: 20210225397Abstract: A write head includes an input coupler configured to receive light excited by a light source. A waveguide core is configured to receive light from the input coupler at a fundamental transverse electric (TE00) mode. The waveguide core has a first straight portion. The waveguide core has a mode converter portion comprising a branched portion extending from the first straight portion. The mode converter portion is configured to convert the light to a higher-order (TE10) mode, the mode converter portion spaced apart from the input coupler. The waveguide core has a second straight portion between the mode converter portion and a media-facing surface. The write head has a near-field transducer at the media-facing surface, the near-field transducer receiving the light at the TE10 mode from the waveguide and directing surface plasmons to a recording medium in response thereto.Type: ApplicationFiled: April 5, 2021Publication date: July 22, 2021Inventors: Reyad Mehfuz, Aidan Dominic Goggin, Pierre Asselin, Christopher Neil Harvey
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Patent number: 11069376Abstract: An apparatus includes a substrate. A laser is formed on a non-self supporting structure and bonded to the substrate. A waveguide having a gap portion is deposited proximate the laser. The waveguide is configured to communicate light from the laser to a near-field transducer (NFT) that directs energy resulting from plasmonic excitation to a recording medium. An optical isolator is disposed over the gap portion.Type: GrantFiled: September 17, 2020Date of Patent: July 20, 2021Assignee: Seagate Technology LLCInventors: John Bernard McGurk, Reyad Mehfuz, Christopher Neil Harvey, Aidan Dominic Goggin
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Patent number: 10971179Abstract: A write head includes an input coupler configured to receive light excited by a light source. A waveguide core is configured to receive light from the input coupler at a fundamental transverse electric (TE00) mode. The waveguide core has a first straight portion. The waveguide core has a mode converter portion comprising a branched portion extending from the first straight portion. The mode converter portion is configured to convert the light to a higher-order (TE10) mode, the mode converter portion spaced apart from the input coupler. The waveguide core has a second straight portion between the mode converter portion and a media-facing surface. The write head has a near-field transducer at the media-facing surface, the near-field transducer receiving the light at the TE10 mode from the waveguide and directing surface plasmons to a recording medium in response thereto.Type: GrantFiled: June 6, 2019Date of Patent: April 6, 2021Assignee: Seagate Technology LLCInventors: Reyad Mehfuz, Aidan Dominic Goggin, Pierre Asselin, Christopher Neil Harvey
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Patent number: 10811043Abstract: An apparatus includes a first waveguide core extending along a light-propagation direction and configured to receive light from a light source at a combined transverse electric (TE) mode and a transverse magnetic (TM) mode. A second waveguide core is spaced apart from the first waveguide core and is configured to couple light at a TM mode to the second waveguide core. A near-field transducer (NFT) is disposed at a media-facing surface of a write head, the NFT receiving the light from the first waveguide core or the second waveguide core and heating a magnetic recording medium in response thereto.Type: GrantFiled: December 16, 2019Date of Patent: October 20, 2020Assignee: Seagate Technology LLCInventors: Christopher Neil Harvey, Aidan Dominic Goggin, Kelly Elizabeth Callan, Reyad Mehfuz
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Patent number: 10783917Abstract: A recording head includes a substrate, a read transducer, a waveguide core, and a near-field transducer at an end of the waveguide core proximate a media-facing surface. The recording head includes a magnetic write pole and coil. A laser diode unit with one or more non-self-supporting layers of crystalline material region is transfer printed between layers of the recording head.Type: GrantFiled: February 6, 2019Date of Patent: September 22, 2020Assignee: Seagate Technology LLCInventors: Aidan Dominic Goggin, Mark Anthony Gubbins, Paula Frances McElhinney, Roger L. Hipwell, Jr., John Wolf
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Patent number: 10734019Abstract: An apparatus includes an input coupler configured to receive light excited by a light source. A near-field transducer (NFT) is positioned at a media-facing surface of a write head. A layered waveguide is positioned between the input coupler and the NFT and configured to receive the light output from the input coupler in a transverse electric (TE) mode and deliver the light to the NFT in a transverse magnetic (TM) mode. The layered waveguide comprises a first layer extending along a light-propagation direction. The first layer is configured to receive light from the input coupler. The first layer tapers from a first cross track width to a second cross track width where the second cross track width is narrower than the first cross track width. The layered waveguide includes a second layer that is disposed on the first layer. The second layer has a cross sectional area in a plane perpendicular to the light propagation direction that increases along the light propagation direction.Type: GrantFiled: July 31, 2019Date of Patent: August 4, 2020Assignee: Seagate Technology LLCInventors: Christopher Neil Harvey, Aidan Dominic Goggin, Kelly Elizabeth Callan, John Bernard McGurk, Reyad Mehfuz
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Patent number: 10692525Abstract: An apparatus includes a substrate. A laser is formed on a non-self supporting structure and bonded to the substrate. A waveguide is deposited proximate the laser. The waveguide is configured to communicate light from the laser to a near-field transducer that directs energy resulting from plasmonic excitation to a recording medium. A light detector is configured to detect an amount of light. At least one laser heater is disposed proximate the laser. A controller is configured to control current supplied to the at least one heater based on the detected amount of light.Type: GrantFiled: September 20, 2018Date of Patent: June 23, 2020Assignee: Seagate Technology LLCInventors: Aidan Dominic Goggin, Mark Anthony Gubbins, Kelly Elizabeth Callan, Reyad Mehfuz, Marcus B. Mooney, Fadi El Hallak, Paula Frances McElhinney