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81. 发明授权

US09947358B1 Laser diode unit with enhanced thermal conduction to slider 有权
公开(公告)号：US09947358B1
公开(公告)日：2018-04-17
申请号：US15678427
申请日：2017-08-16
申请人： Seagate Technology LLC
发明人： Yuhang Cheng , Scott Franzen , Zoran Jandric , James Gary Wessel , Ning Shi
IPC分类号： G11B7/125 , G11B11/00 , G11B5/31 , G11B5/60 , G11B5/48 , G11B5/105 , G11B5/00
CPC分类号： G11B5/6088 , G11B5/105 , G11B5/314 , G11B5/4826 , G11B2005/0021
摘要： An apparatus comprises a slider having a trailing edge and a leading edge. A laser diode unit comprises a submount and a laser diode mounted to the submount. The submount includes a mounting surface affixed to a first surface of the slider at the trailing edge such that a first surface of the submount faces toward the leading edge of the slider. A thermally conductive material covers the first surface of the submount and at least a portion of the first surface of the slider. The thermally conductive material serves as a thermal conduction pathway between the submount and the slider.

82. 发明授权

US09799361B1 Dual purpose bolometric sensor for heat-assisted magnetic recording device 有权
公开(公告)号：US09799361B1
公开(公告)日：2017-10-24
申请号：US15391125
申请日：2016-12-27
申请人： Seagate Technology LLC
发明人： John Charles Duda , James Gary Wessel
IPC分类号： G11B5/02 , G11B5/60 , G11B5/00 , G11B5/48
CPC分类号： G11B5/6076 , G11B5/455 , G11B5/4866 , G11B5/6052 , G11B5/607 , G11B5/6088 , G11B2005/0021
摘要： An apparatus comprises a slider and an optical waveguide formed in the slider and configured to receive light from a laser source. A near-field transducer (NFT) is formed on the slider at or near an air bearing surface (ABS) of the slider and optically coupled to the waveguide. A bolometric sensor is positioned proximate the NFT and exposed to at least some of the light. The bolometric sensor is configured to detect changes in output optical power of the laser source and contact between the slider and a magnetic recording medium.

83. 发明授权

US09754617B2 Laser diode unit with enhanced thermal conduction to slider 有权
公开(公告)号：US09754617B2
公开(公告)日：2017-09-05
申请号：US14626688
申请日：2015-02-23
申请人： Seagate Technology LLC
发明人： Yuhang Cheng , Scott Franzen , Zoran Jandric , James Gary Wessel , Ning Shi
IPC分类号： G11B7/125 , G11B11/00 , G11B5/31 , G11B5/60 , G11B5/48 , G11B5/105 , G11B5/00
CPC分类号： G11B5/6088 , G11B5/105 , G11B5/314 , G11B5/4826 , G11B2005/0021
摘要： An apparatus comprises a slider having a trailing edge and a leading edge. A laser diode unit comprises a submount and a laser diode mounted to the submount. The submount includes a mounting surface affixed to a first surface of the slider at the trailing edge such that a first surface of the submount faces toward the leading edge of the slider. A thermally conductive material covers the first surface of the submount and at least a portion of the first surface of the slider. The thermally conductive material serves as a thermal conduction pathway between the submount and the slider.

84. 发明授权

US09691424B2 Bolometer for internal laser power monitoring in heat-assisted magnetic recording device 有权
公开(公告)号：US09691424B2
公开(公告)日：2017-06-27
申请号：US15051053
申请日：2016-02-23
申请人： Seagate Technology LLC
发明人： John Charles Duda , Ruoxi Yang , James Gary Wessel
IPC分类号： G11B11/00 , G11B5/60 , G11B5/31 , G11B5/00 , G11B11/105 , G11B11/12 , G11B11/14
CPC分类号： G11B11/10547 , G11B5/314 , G11B5/4866 , G11B5/6052 , G11B5/607 , G11B5/6082 , G11B5/6088 , G11B11/06 , G11B11/10532 , G11B11/10543 , G11B11/12 , G11B11/14 , G11B2005/0021
摘要： An apparatus comprises a slider having an air-bearing surface (ABS), a write pole at or near the ABS, and a reader at or near the ABS and connected to a pair of reader bond pads of the slider. A near-field transducer (NFT) is formed on the slider at or near the ABS, and an optical waveguide is formed in the slider and configured to receive light from a laser source. A sensor is situated proximal of the write pole at a location within the slider that receives at least some of the light communicated along the waveguide. The sensor may be electrically coupled to the reader bond pads in parallel with the reader, and configured to generate a signal indicative of output optical power of the laser source.

85. 发明授权

US09536555B1 Dual purpose bolometric sensor for heat-assisted magnetic recording device 有权
标题翻译：用于热辅助磁记录装置的双用途空调传感器
公开(公告)号：US09536555B1
公开(公告)日：2017-01-03
申请号：US15007772
申请日：2016-01-27
申请人： Seagate Technology LLC
发明人： John Charles Duda , James Gary Wessel
IPC分类号： G11B5/02 , G11B5/60 , G11B5/00
CPC分类号： G11B5/6076 , G11B5/455 , G11B5/4866 , G11B5/6052 , G11B5/607 , G11B5/6088 , G11B2005/0021
摘要： An apparatus comprises a slider and an optical waveguide formed in the slider and configured to receive light from a laser source. A near-field transducer (NFT) is formed on the slider at or near an air bearing surface (ABS) of the slider and optically coupled to the waveguide. A bolometric sensor is positioned proximate the NFT and exposed to at least some of the light. The bolometric sensor is configured to detect changes in output optical power of the laser source and contact between the slider and a magnetic recording medium.
摘要翻译：一种装置包括滑块和形成在滑块中的光波导，并被配置为接收来自激光源的光。在滑块上或附近的滑动件的空气轴承表面（ABS）处形成近场换能器（NFT），并且光学耦合到波导。辐射传感器位于NFT附近并暴露于至少一些光。测量传感器被配置为检测激光源的输出光功率的变化和滑块与磁记录介质之间的接触。

86. 发明申请

US20160247528A1 LASER DIODE SUBMOUNT/SLIDER INTERFACE WITH REDUCED THERMAL RESISTANCE 有权
标题翻译：具有降低耐热性的激光二极管/滑动接口
公开(公告)号：US20160247528A1
公开(公告)日：2016-08-25
申请号：US14626707
申请日：2015-02-19
申请人： Seagate Technology LLC
发明人： Zoran Jandric , Ning Shi , James Gary Wessel , Lars Ahlen , Neil Zuckerman , Tyler Perry
IPC分类号： G11B5/60 , G11B5/48
CPC分类号： G11B5/6088 , G11B5/105 , G11B5/314 , G11B5/4866 , G11B2005/0021
摘要： An apparatus comprises a slider of a magnetic recording head, a submount, and an interface defined between the slider and the submount. A laser diode is connected to the submount. A metal layer is provided at the interface between the slider and the submount. The metal layer connects at least about 30% of the surface area of the submount at the interface to the slider and serves as a thermal conduction pathway between the submount and the slider.
摘要翻译：一种装置包括磁记录头的滑动器，底座以及限定在滑块和底座之间的界面。激光二极管连接到底座。金属层设置在滑块和底座之间的界面处。金属层将接头处的底座的表面积的至少约30％连接到滑块，并且用作底座和滑块之间的热传导路径。

87. 发明申请

US20160247527A1 LASER DIODE UNIT WITH ENHANCED THERMAL CONDUCTION TO SLIDER 有权
标题翻译：激光二极管单元，具有增强的导热滑块
公开(公告)号：US20160247527A1
公开(公告)日：2016-08-25
申请号：US14626688
申请日：2015-02-23
申请人： Seagate Technology LLC
发明人： Yuhang Cheng , Scott Franzen , Zoran Jandric , James Gary Wessel , Ning Shi
IPC分类号： G11B5/60 , G11B5/48
CPC分类号： G11B5/6088 , G11B5/105 , G11B5/314 , G11B5/4826 , G11B2005/0021
摘要： An apparatus comprises a slider having a trailing edge and a leading edge. A laser diode unit comprises a submount and a laser diode mounted to the submount. The submount includes a mounting surface affixed to a first surface of the slider at the trailing edge such that a first surface of the submount faces toward the leading edge of the slider. A thermally conductive material covers the first surface of the submount and at least a portion of the first surface of the slider. The thermally conductive material serves as a thermal conduction pathway between the submount and the slider.
摘要翻译：一种装置包括具有后缘和前缘的滑块。激光二极管单元包括安装到底座的基座和激光二极管。底座包括在后缘处固定到滑块的第一表面的安装表面，使得底座的第一表面面向滑块的前缘。导热材料覆盖基座的第一表面和滑块的第一表面的至少一部分。导热材料用作底座和滑块之间的热传导路径。

88. 发明授权

US09396749B2 Waveguide core layer with reduced downtrack thickness proximate a near-field transducer 有权
标题翻译：波导芯层，靠近近场传感器具有减小的压缩厚度
公开(公告)号：US09396749B2
公开(公告)日：2016-07-19
申请号：US14691204
申请日：2015-04-20
申请人： Seagate Technology LLC
发明人： Pierre Asselin , Ruoxi Yang , James Gary Wessel
IPC分类号： G11B11/00 , G11B5/60 , G11B5/31 , G11B5/00 , G11B11/105
CPC分类号： G11B5/6088 , G11B5/314 , G11B11/10532 , G11B11/10543 , G11B2005/0021
摘要： An apparatus includes a write pole proximate a media-facing surface of a recording head. A near-field transducer is adjacent to the write pole. A waveguide has a core layer extending from an energy source to the media-facing surface. The core layer includes a region of reduced downtrack thickness proximate the near-field transducer. The region of reduced downtrack thickness is defined by a notch facing away from the near-field transducer. A material of the notch has a different index of refraction than an index of refraction of the core layer.
摘要翻译：一种装置包括靠近记录头的面向媒体的表面的写入磁极。近场换能器与写柱相邻。波导具有从能量源延伸到面向介质的表面的芯层。核心层包括靠近近场换能器的减小的压缩厚度的区域。减少下行横截面厚度的区域由远离近场传感器的凹口限定。凹口的材料具有与芯层的折射率不同的折射率。

89. 发明授权

US09304253B2 Near-field transducer with flare peg 有权
标题翻译：近场换能器带有喇叭钉
公开(公告)号：US09304253B2
公开(公告)日：2016-04-05
申请号：US13789272
申请日：2013-03-07
申请人： Seagate Technology LLC
发明人： Zoran Jandric , Lina Cao , Werner Scholz , James Gary Wessel
IPC分类号： G11B13/04 , G02B6/122 , G11B5/31 , G11B5/60 , G11B5/00
CPC分类号： G02B6/1226 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： Disclosed are plasmonic near-field transducers that are useful in heat-assisted magnetic recording. The disclosed plasmonic near-field transducers have an enlarged region and a flared region. In some embodiments the disclosed plasmonic near-field transducer can also include a peg region. The flared region can act as a heat sink and can lower the thermal resistance of the peg region of the near-field transducer, thus reducing its temperature. Also disclosed are methods that include delivering light to a magnetic transducer region via a waveguide, receiving the light at a plasmonic near-field transducer having an output end and disposed in proximity to the magnetic transducer region, and delivering a surface plasmon-enhanced near-field radiation pattern proximate the output end of the plasmonic transducer in response to receiving the light.
摘要翻译：公开了可用于热辅助磁记录的等离子体近场换能器。所公开的等离子体近场换能器具有扩大的区域和扩口区域。在一些实施例中，所公开的等离子体激元近场换能器还可以包括钉住区域。扩口区域可以作为散热器，并且可以降低近场换能器的钉区域的热阻，从而降低其温度。还公开了一种方法，其包括经由波导将光传送到磁换能器区域，在具有输出端并设置在靠近磁换能器区域的等离子体近场换能器处接收光，以及输送表面等离子体增强的近场传感器，响应于接收光而等离子体激元传感器的输出端附近的场辐射图。

90. 发明申请

US20160087402A1 THERMAL MANAGEMENT OF LASER DIODE MODE HOPPING FOR HEAT ASSISTED MEDIA RECORDING 有权
标题翻译：激光二极管模式热管理热辅助介质记录的热管理
公开(公告)号：US20160087402A1
公开(公告)日：2016-03-24
申请号：US14492802
申请日：2014-09-22
申请人： Seagate Technology LLC
发明人： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC分类号： H01S5/068 , H01S5/026 , H01S5/065 , H01S5/06
CPC分类号： G11B7/1263 , G11B5/02 , G11B5/09 , G11B5/40 , G11B5/455 , G11B2005/0021 , H01S5/02453 , H01S5/0261 , H01S5/0612 , H01S5/0617 , H01S5/06216 , H01S5/0651 , H01S5/06804 , H01S5/06808
摘要： A method and apparatus provide for determining a temperature at a junction of a laser diode when the laser diode is operated in a lasing state that facilitates heat-assisted magnetic recording, comparing the junction temperature and an injection current supplied during the lasing state to stored combinations of junction temperature and injection current, and determining a likelihood of mode hopping occurring for the laser diode during the lasing state based on the comparison to stored combinations of junction temperature and injection current.
摘要翻译：一种方法和装置，用于在激光二极管以促进热辅助磁记录的激光状态下操作时确定激光二极管的结点处的温度，将结温和在激光期间提供的注入电流与存储的组合进行比较的结温和注入电流，并且基于与存储的结温和注入电流的组合的比较，确定在激光状态期间激光二极管发生模式跳变的可能性。

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