Invention Grant
US08213271B2 System, method and apparatus for internal polarization rotation for horizontal cavity, surface emitting laser beam for thermally assisted recording in disk drive
有权
用于水平腔的内部偏振旋转的系统，方法和装置，用于磁盘驱动器中热辅助记录的表面发射激光束
- Patent Title: System, method and apparatus for internal polarization rotation for horizontal cavity, surface emitting laser beam for thermally assisted recording in disk drive
- Patent Title (中): 用于水平腔的内部偏振旋转的系统，方法和装置，用于磁盘驱动器中热辅助记录的表面发射激光束
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Application No.: US12346930Application Date: 2008-12-31
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Publication No.: US08213271B2Publication Date: 2012-07-03
- Inventor: Thomas Dudley Boone, Jr. , Timothy Carl Strand , Bruce David Terris
- Applicant: Thomas Dudley Boone, Jr. , Timothy Carl Strand , Bruce David Terris
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Main IPC: G11B11/00
- IPC: G11B11/00
Abstract:
A horizontal cavity, surface emitting laser (HCSEL) with internal polarization rotation is used in thermally assisted recording in hard disk drives. The desired polarization of the laser is accomplished with two beam reflections off of facets within the diode. The facets are formed in a single ion beam etching step. This device can be used in a thermally assisted recording head to produce polarization incident on the disk aligned with the direction of the tracks on the disk.
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