Invention Application
WO2016187379A1 PROCEDURE FOR SETTING LASER AND HEATER POWER IN HAMR DEVICE
审中-公开
在HAMR设备中设置激光和加热器功率的步骤
- Patent Title: PROCEDURE FOR SETTING LASER AND HEATER POWER IN HAMR DEVICE
- Patent Title (中): 在HAMR设备中设置激光和加热器功率的步骤
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Application No.: PCT/US2016/033188Application Date: 2016-05-19
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Publication No.: WO2016187379A1Publication Date: 2016-11-24
- Inventor: RAUSCH, Tim , SHIMIZU, Tatsuya , LAI, Wai Yeon , CHEUNG, Kai Chiu
- Applicant: SEAGATE TECHNOLOGY LLC , TDK CORPORATION
- Applicant Address: 10200 South De Anza Boulevard Cupertino, CA 95014 US
- Assignee: SEAGATE TECHNOLOGY LLC,TDK CORPORATION
- Current Assignee: SEAGATE TECHNOLOGY LLC,TDK CORPORATION
- Current Assignee Address: 10200 South De Anza Boulevard Cupertino, CA 95014 US
- Agency: PRIBNOW, Scott
- Priority: US14/716,148 20150519
- Main IPC: G11B5/31
- IPC: G11B5/31 ; G11B5/02 ; G11B5/48 ; G11B5/00
Abstract:
A heater power of a heat-assisted magnetic recording head is set to an initial power to induce an initial head-medium clearance. For a plurality of iterations, a heater power at an optimum laser power is determined that achieve a target clearance. If differences in the heater power and optimum laser power between the two subsequent iterations are below a threshold, the iterations are stopped and the heater power and the optimum laser power for one of the two subsequent iterations is used as an operational heater power and laser power for the heat-assisted magnetic recording head.
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