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	Thermal assisted magnetic recording light delivery waveguide circuit for reduced stray light induced writer protrusion
	STAFFARONI, MATTEO; JIN, XUHUI; XU, WEIHAO; CHUNG, LUC
	2016-10-11
著作权人	HEADWAY TECHNOLOGIES, INC.
专利号	US9466320
国家	美国
文献子类	授权发明
其他题名	Thermal assisted magnetic recording light delivery waveguide circuit for reduced stray light induced writer protrusion
英文摘要	A thermally assisted magnetic recording head is disclosed with a light delivery waveguide circuit wherein a middle section of the primary waveguide (WG) has a curved portion. In one embodiment, the curved portion connects to a front WG section at the air bearing surface (ABS) and is offset in a cross-track direction from the laser diode to prevent stray light from heating metal parts proximate to the front section and undesirable writer protrusion. Optionally, a reflective blocker is inserted between the WG spot size converter and ABS. In a second embodiment, the laser diode, spot size converter, and front WG section are all aligned along a center slider plane. The curved portion has at least one 180° bend to bend light around the blocker that is between the spot size converter and WG front section. The blocker is tilted to prevent reflected light from returning to the laser diode.
公开日期	2016-10-11
申请日期	2015-10-21
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/33109]
专题	半导体激光器专利数据库
作者单位	HEADWAY TECHNOLOGIES, INC.
推荐引用方式 GB/T 7714	STAFFARONI, MATTEO,JIN, XUHUI,XU, WEIHAO,et al. Thermal assisted magnetic recording light delivery waveguide circuit for reduced stray light induced writer protrusion. US9466320. 2016-10-11.

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