公开(公告)号：US09466320B1

公开(公告)日：2016-10-11

申请号：US14918627

申请日：2015-10-21

申请人： Headway Technologies, Inc.

发明人： Matteo Staffaroni ,  Xuhui Jin ,  Weihao Xu ,  Luc Chung

IPC分类号： G11B5/127 ,  G11B11/00 ,  G11B5/02 ,  G11B5/48 ,  G11B5/60 ,  G11B5/31 ,  G11B5/00

CPC分类号： G11B5/314 ,  G11B5/3116 ,  G11B5/3136 ,  G11B5/6088 ,  G11B2005/0021

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.

摘要翻译： 公开了一种热辅助磁记录头，其具有光传输波导电路，其中初级波导（WG）的中间部分具有弯曲部分。 在一个实施例中，弯曲部分连接到空气轴承表面（ABS）处的前部WG部分，并且在与激光二极管的横向方向上偏移以防止杂散光加热接近前部的金属部件和不期望的作者 突出。 可选地，反射阻挡剂插入在WG点尺寸转换器和ABS之间。 在第二实施例中，激光二极管，光斑尺寸转换器和前部WG部分都沿着中心滑块平面排列。 弯曲部分具有至少一个180°的弯曲以弯曲位于光斑尺寸转换器和WG前部之间的阻挡件周围的光。 阻挡器被倾斜以防止反射光返回到激光二极管。