Patents by Inventor Nils Gokemeijer
Nils Gokemeijer 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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Patent number: 9396748Abstract: A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a HAMR magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. The near-field transducers include an enlarged disk region and a peg region at least partially in contact with the enlarged disk region. The method further includes filtering output radiation from the near-field transducers by passing a portion of photoluminescent radiation emitted by the near-field transducers in response to the excitation radiation and substantially blocking the excitation radiation transmitted by the near-field transducers. The method also includes detecting the portion of photoluminescent radiation and characterizing the peg region of at least one of the plurality of near-field transducers.Type: GrantFiled: February 17, 2015Date of Patent: July 19, 2016Assignee: SEAGATE TECHNOLOGY LLCInventors: Chubing Peng, Nils Gokemeijer, Yuhang Cheng, Kaspar Ko, Amit Sharma
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Patent number: 9202489Abstract: An apparatus that includes a slider having a mounting surface, the mounting surface opposite a media-facing surface of the slider. The apparatus includes a laser diode mounted on a side surface to the mounting surface. The laser diode has an active region of the laser diode is disposed substantially perpendicular to the mounting surface.Type: GrantFiled: January 24, 2014Date of Patent: December 1, 2015Assignee: Seagate Technology LLCInventors: Nils Gokemeijer, Edward Charles Gage, Roger L. Hipwell, Michael Christopher Kautzky, Scott Eugene Olson
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Publication number: 20150213819Abstract: An apparatus that includes a slider having a mounting surface, the mounting surface opposite a media-facing surface of the slider. The apparatus includes a laser diode mounted on a side surface to the mounting surface. The laser diode has an active region of the laser diode is disposed substantially perpendicular to the mounting surface.Type: ApplicationFiled: January 24, 2014Publication date: July 30, 2015Applicant: Seagate Technology LLCInventors: Nils Gokemeijer, Edward Charles Gage, Roger L. Hipwell, Michael Christopher Kautzky, Scott Eugene Olson
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Publication number: 20150187378Abstract: A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a HAMR magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. The near-field transducers include an enlarged disk region and a peg region at least partially in contact with the enlarged disk region. The method further includes filtering output radiation from the near-field transducers by passing a portion of photoluminescent radiation emitted by the near-field transducers in response to the excitation radiation and substantially blocking the excitation radiation transmitted by the near-field transducers. The method also includes detecting the portion of photoluminescent radiation and characterizing the peg region of at least one of the plurality of near-field transducers.Type: ApplicationFiled: February 17, 2015Publication date: July 2, 2015Inventors: Chubing Peng, Nils Gokemeijer, Yuhang Cheng, Kaspar Ko, Amit Sharma
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Publication number: 20150063087Abstract: A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a HAMR magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. The near-field transducers include an enlarged disk region and a peg region at least partially in contact with the enlarged disk region. The method further includes filtering output radiation from the near-field transducers by passing a portion of photoluminescent radiation emitted by the near-field transducers in response to the excitation radiation and substantially blocking the excitation radiation transmitted by the near-field transducers. The method also includes detecting the portion of photoluminescent radiation and characterizing the peg region of at least one of the plurality of near-field transducers.Type: ApplicationFiled: September 3, 2013Publication date: March 5, 2015Applicant: Seagate Technology LLCInventors: Chubing Peng, Nils Gokemeijer, Yuhang Cheng, Kaspar Ko, Amit Sharma
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Patent number: 8958271Abstract: A method is provided for characterizing the peg region of a near-field transducer incorporated into a write head of a HAMR magnetic recorder. The method includes providing excitation radiation to one or more near-field transducers. The near-field transducers include an enlarged disk region and a peg region at least partially in contact with the enlarged disk region. The method further includes filtering output radiation from the near-field transducers by passing a portion of photoluminescent radiation emitted by the near-field transducers in response to the excitation radiation and substantially blocking the excitation radiation transmitted by the near-field transducers. The method also includes detecting the portion of photoluminescent radiation and characterizing the peg region of at least one of the plurality of near-field transducers.Type: GrantFiled: September 3, 2013Date of Patent: February 17, 2015Assignee: Seagate Technology LLCInventors: Chubing Peng, Nils Gokemeijer, Yuhang Cheng, Kaspar Ko, Amit Sharma
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Publication number: 20150037613Abstract: A magnetic device including a magnetic writer; and an overcoat positioned over at least the magnetic writer, the overcoat including tantalum oxide (TayOx), where y ranges from about 1 to 2 and x ranges from about 2 to 5, or mixtures thereof.Type: ApplicationFiled: July 30, 2013Publication date: February 5, 2015Applicant: SEAGATE TECHNOLOGY LLCInventors: Nils Gokemeijer, Tong Zhao, James Kiely
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Publication number: 20070036040Abstract: An apparatus comprises a waveguide, an optical transducer for coupling electromagnetic radiation from the waveguide to a point adjacent to an air bearing surface to heat a portion of a storage medium, and a first wire positioned adjacent to the air bearing surface, wherein current in the wire produces a magnetic field in the heated portion of the storage medium.Type: ApplicationFiled: August 11, 2005Publication date: February 15, 2007Applicant: Seagate Technology LLCInventors: Christophe Mihalcea, William Challener, Werner Scholz, Kalman Pelhos, Dorothea Buechel, Julius Hohlfeld, Nils Gokemeijer
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Publication number: 20060232892Abstract: An apparatus comprises a ferromagnetic free layer having a first magnetic moment and having a magnetization that rotates in response to an external magnetic field, a first ferromagnetic reference layer positioned adjacent to a first side of the ferromagnetic free layer and having a second magnetic moment that is greater than the first magnetic moment of the ferromagnetic free layer, a second ferromagnetic reference layer positioned adjacent to a second side of the ferromagnetic free layer and having a third magnetic moment that is greater than the first magnetic moment of the ferromagnetic free layer, a first non-magnetic spacer layer positioned between the ferromagnetic free layer and the first ferromagnetic reference layer, a second non-magnetic spacer layer positioned between the ferromagnetic free layer and the second ferromagnetic reference layer, and a source of magnetic field for biasing the first and second ferromagnetic reference layers.Type: ApplicationFiled: April 13, 2005Publication date: October 19, 2006Applicant: Seagate Technology LLCInventors: Mark Covington, Nils Gokemeijer