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	Thermally assisted magnetic head having a semiconductor surface-emitting laser
	SHIMAZAWA, KOJI; KOMURA, EIJI; TAKAYAMA, SEIICHI
	2011-08-16
著作权人	TDK CORPORATION
专利号	US8000175
国家	美国
文献子类	授权发明
其他题名	Thermally assisted magnetic head having a semiconductor surface-emitting laser
英文摘要	A thermally assisted magnetic head includes: a slider having a medium-facing surface; and a surface-emitting semiconductor laser. The slider has: a slider substrate, on which part of the medium-facing surface is formed; and a magnetic head portion, on which another part of the medium-facing surface is formed, and which has a first surface in contact with a head stacking surface of the slider substrate and a second surface opposite the first surface. The magnetic head portion has: a main magnetic pole that generates a write magnetic field from an end face on the side of the medium-facing surface; an optical waveguide core extending along the first surface and having a light exit surface at the medium-facing surface; and a diffraction grating, which is provided in the optical waveguide core or further towards the second surface than the optical waveguide core, and the refractive index of which varies periodically along the direction in which the optical waveguide core extends. The surface-emitting semiconductor laser is provided opposing the second surface so that emission light from the surface-emitting semiconductor laser is incident onto the diffraction grating, and the diffraction grating causes at least part of emission light from the surface-emitting semiconductor laser to be optically coupled to the optical waveguide core.
公开日期	2011-08-16
申请日期	2009-01-30
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/32764]
专题	半导体激光器专利数据库
作者单位	TDK CORPORATION
推荐引用方式 GB/T 7714	SHIMAZAWA, KOJI,KOMURA, EIJI,TAKAYAMA, SEIICHI. Thermally assisted magnetic head having a semiconductor surface-emitting laser. US8000175. 2011-08-16.

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