Coupling grating for focusing light within a waveguide for heat assisted magnetic recording

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	Coupling grating for focusing light within a waveguide for heat assisted magnetic recording
其他题名	Coupling grating for focusing light within a waveguide for heat assisted magnetic recording
	RAUSCH, TIM
	2006-05-18
专利权人	SEAGATE TECHNOLOGY LLC
公开日期	2006-05-18
授权国家	美国
专利类型	发明申请
摘要	A method and apparatus for focusing light within a waveguide is provided. The waveguide includes a curved grating adapted to focus light incident thereon to a focused spot proximate a first end of the waveguide. In another embodiment, the first end of the waveguide has a thickness greater than a portion of the waveguide containing the grating. The waveguide is suitable for focusing light onto a magnetic storage medium and the like, making the waveguide suitable for heat-assisted magnetic recording (HAMR) applications.
其他摘要	提供了一种用于将光聚焦在波导内的方法和设备。波导包括弯曲光栅，其适于将入射在其上的光聚焦到靠近波导的第一端的聚焦点。在另一个实施例中，波导的第一端的厚度大于包含光栅的波导的一部分。该波导适合于将光聚焦到磁存储介质等上，使得该波导适用于热辅助磁记录（HAMR）应用。
主权项	Apparatus for focusing a light, comprising: a waveguide; and a curved grating formed in the waveguide, the grating adapted to focus the light incident on the waveguide to a focused spot at a first end of the waveguide, wherein the first end is tangent to, or passes through the focused spot, wherein a thickness of the waveguide at the first end is greater than a thickness of the waveguide at the grating.
申请日期	2004-11-15
专利号	US20060104570A1
专利状态	授权
申请号	US10/988970
公开（公告）号	US20060104570A1
IPC 分类号	G02B6/34
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/53466
专题	半导体激光器专利数据库
作者单位	SEAGATE TECHNOLOGY LLC
推荐引用方式 GB/T 7714	RAUSCH, TIM. Coupling grating for focusing light within a waveguide for heat assisted magnetic recording. US20060104570A1[P]. 2006-05-18.