JP2016194967A5 - - Google Patents

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Publication number
JP2016194967A5
JP2016194967A5 JP2016068003A JP2016068003A JP2016194967A5 JP 2016194967 A5 JP2016194967 A5 JP 2016194967A5 JP 2016068003 A JP2016068003 A JP 2016068003A JP 2016068003 A JP2016068003 A JP 2016068003A JP 2016194967 A5 JP2016194967 A5 JP 2016194967A5
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JP
Japan
Prior art keywords
laser
current
laser current
determining
error rate
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JP2016068003A
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English (en)
Japanese (ja)
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JP6602715B2 (ja
JP2016194967A (ja
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Priority claimed from US14/674,360 external-priority patent/US9236081B1/en
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Publication of JP2016194967A publication Critical patent/JP2016194967A/ja
Publication of JP2016194967A5 publication Critical patent/JP2016194967A5/ja
Application granted granted Critical
Publication of JP6602715B2 publication Critical patent/JP6602715B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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JP2016068003A 2015-03-31 2016-03-30 熱アシスト磁気記録装置におけるレーザ温度校正 Expired - Fee Related JP6602715B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/674,360 2015-03-31
US14/674,360 US9236081B1 (en) 2015-03-31 2015-03-31 Laser temperature calibration in a HAMR device

Publications (3)

Publication Number Publication Date
JP2016194967A JP2016194967A (ja) 2016-11-17
JP2016194967A5 true JP2016194967A5 (enExample) 2019-04-25
JP6602715B2 JP6602715B2 (ja) 2019-11-06

Family

ID=55026537

Family Applications (1)

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JP2016068003A Expired - Fee Related JP6602715B2 (ja) 2015-03-31 2016-03-30 熱アシスト磁気記録装置におけるレーザ温度校正

Country Status (3)

Country Link
US (1) US9236081B1 (enExample)
JP (1) JP6602715B2 (enExample)
CN (1) CN106024021B (enExample)

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Publication number Priority date Publication date Assignee Title
US9536555B1 (en) 2015-02-11 2017-01-03 Seagate Technology Llc Dual purpose bolometric sensor for heat-assisted magnetic recording device
US9691424B2 (en) 2015-03-24 2017-06-27 Seagate Technology Llc Bolometer for internal laser power monitoring in heat-assisted magnetic recording device
US9824705B1 (en) 2016-01-12 2017-11-21 Seagate Technology Llc Pad sharing for contact sensor and bolometer with temperature compensation in heat-assisted magnetic recording device
US9620162B1 (en) 2016-03-31 2017-04-11 Western Digital Technologies, Inc. Data storage device boosting prelase bias while over data sector for heat assisted magnetic recording
US9679599B1 (en) 2016-08-26 2017-06-13 Seagate Technology Llc Adaptive field adjustment of transducer power levels
US10083716B1 (en) * 2016-09-13 2018-09-25 Seagate Technology Llc Laser calibration for heat-assisted magnetic recording head using interleaved laser current
US9972350B1 (en) 2016-10-31 2018-05-15 Seagate Technology Llc Bolometer and contact sensor arrangement for a heat-assisted magnetic recording device
US10204655B1 (en) * 2016-11-03 2019-02-12 Seagate Technology Llc Heat-assisted magnetic recording device capable of preventing contaminant on the head
US9747937B1 (en) 2016-11-03 2017-08-29 Seagate Technology Llc Multi-purpose resistive sensor for a heat-assisted magnetic recording device
US10783917B1 (en) 2016-11-29 2020-09-22 Seagate Technology Llc Recording head with transfer-printed laser diode unit formed of non-self-supporting layers
US9870787B1 (en) 2017-04-19 2018-01-16 Seagate Technology Llc Bolometer with low scattering for a heat-assisted magnetic recording slider
US9786310B1 (en) * 2017-06-06 2017-10-10 Western Digital Technologies, Inc. Data storage device detecting lasing threshold of laser by measuring protrusion effect
US9990950B1 (en) * 2017-07-17 2018-06-05 Seagate Technology Llc Calibration and adjusting target pre-write clearance offset for a heat-assisted magnetic recording device
US10127930B1 (en) 2018-03-13 2018-11-13 Seagate Technology Llc In-field laser calibration for heat-assisted magnetic recording head using temperature compensation equation
US10395680B1 (en) 2018-04-18 2019-08-27 Seagate Technology Llc Leading edge thermal sensor for a heat-assisted magnetic recording head
US10410660B1 (en) 2018-09-18 2019-09-10 Seagate Technology Llc Split contact sensor for a heat-assisted magnetic recording slider
US10692525B2 (en) * 2018-09-20 2020-06-23 Seagate Technology Llc On wafer laser stability control for heat-assisted magnetic recording
US10515658B1 (en) 2018-10-04 2019-12-24 Seagate Technology Llc Laser calibration using temperature compensation equation for heat-assisted magnetic recording device
US10783918B2 (en) * 2018-10-12 2020-09-22 Seagate Technology Llc Heat-assisted magnetic recording device incorporating laser heater for improved laser stability
JP7170583B2 (ja) 2019-05-17 2022-11-14 株式会社東芝 磁気記録装置及びその磁気ヘッド制御方法
US10997997B1 (en) * 2020-05-19 2021-05-04 Western Digital Technologies, Inc. Data storage device compensating for mode hop of a laser
US12159653B1 (en) 2023-06-28 2024-12-03 Western Digital Technologies, Inc. Data storage device with laser write bias optimization using disk thermal-magnetic response mapping in heat-assisted magnetic recording
US12288574B1 (en) 2024-03-25 2025-04-29 Seagate Technology Llc Identifying heat assisted recording laser stability using ramped temperature calibration

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