CN1945712B - 光传送模块和使用该模块的热辅助磁记录头 - Google Patents

光传送模块和使用该模块的热辅助磁记录头 Download PDF

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CN1945712B
CN1945712B CN200610121327XA CN200610121327A CN1945712B CN 1945712 B CN1945712 B CN 1945712B CN 200610121327X A CN200610121327X A CN 200610121327XA CN 200610121327 A CN200610121327 A CN 200610121327A CN 1945712 B CN1945712 B CN 1945712B
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CN1945712A (zh
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徐成东
孙镇升
李丙圭
赵恩亨
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Samsung Electronics Co Ltd
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
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    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
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    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G—PHYSICS
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    • G—PHYSICS
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    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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Abstract

本发明提供了一种光传送模块和使用该模块的热辅助磁记录(HAMR)头，所述模块的结构使得部件能够精确对准并且被集成为单个单元。所述光传送模块包括：具有第一凹槽的底座；安装在所述底座上的光源；安装在所述底座上的光学器件，其引导从所述光源发出的光；结合到所述底座上以保护所述光源和光学器件的盖元件，其具有朝向所述第一凹槽的第二凹槽；和结合在所述第一和第二凹槽中以通过调节通过所述光学器件传导的光的分布而形成增强近场的纳米孔径。

Description

光传送模块和使用该模块的热辅助磁记录头
技术领域
本发明涉及具有能够实现增强近场(enhanced near-field)的结构的光传送模块和使用该模块的热辅助磁记录(HAMR，heat-assisted magneticrecording)头，具体而言，涉及部件能够精确对准的光传送模块和使用该光传送模块的HAMR。 
背景技术
由于在很多技术领域中，光是以超出衍射极限的分辨率产生的，所以人们正在研究实现增强近场的技术。 
特别是，对增加磁记录头的磁记录密度的研究已经在进行。由于在仅使用磁场来记录数据的磁记录方法中，记录位(bit)在热学特性上不稳定，所以难以增加磁记录密度。为了克服这一点，包括光传送模块的热辅助磁记录(HAMR)头已经被公开，其中所述光传送模块辐射光以局部加热磁记录介质，从而暂时减小磁记录介质的矫顽力，以便进行记录。 
参照图1，传统HAMR头10包括磁记录单元20和用于加热磁记录介质40的光传送模块30。 
磁记录单元20包括用于向磁记录介质40施加磁场的记录极21和通过磁轭23与记录极21磁性连接以完成一个磁通路M的返回极25。 
光传送模块30通过近场照射来加热磁记录介质40的预定部分A，其包括光源31和用于引导从光源31辐射来的光的光波导35。光源31通过传输光的光纤33和对从光纤33发射来的光进行准直的复合球面透镜34与光波导35耦合。 
磁记录介质40相对于HAMR头10沿方向D移动。由于磁记录介质40的相对运动，被加热部分A位于记录极21的下方。相应地，由于记录极21对被加热部分垂直进行磁性记录，所以克服了磁记录中的热学不稳定性。 
由于光波导35附接到记录极21外侧，所以当磁记录单元20从磁记录 介质通过气浮系统向上移动时，可以在光波导35和磁记录介质40之间保持预定的距离。 
在用于为高密度记录提高光强度的纳米孔径37和光波导35之间需要进行精确的偏振对准。此外，由于仅仅光波导35和纳米孔径37与磁记录单元20结合在一起而光源31和光纤33安装在其它结构(未示出)中，整体结构较复杂，所以组装工序的数量和制造成本都会提高。 
发明内容
本发明提供了一种光传送模块和使用该模块的热辅助磁记录(HAMR)头，所述模块的结构使得部件能够精确对准并且集成为单个单元。 
根据本发明的一个方面，提供了一种光传送模块，其包括：具有第一凹槽的底座；安装在所述底座上的光源；安装在所述底座上的光学器件，其引导从所述光源发出的光；结合到所述底座上以保护所述光源和光学器件的盖元件，其具有朝向所述第一凹槽的第二凹槽；和结合在所述第一和第二凹槽中以通过调节通过所述光学器件传导的光的分布而形成增强近场的纳米孔径。 
根据本发明的一个方面，提供了一种热辅助磁记录头，其包括磁记录单元和光传送模块。所述磁记录单元包括：施加记录磁场的记录极；和与所述记录极磁连接以形成磁通路的返回极。所述光传送模块包括：具有第一凹槽的底座；安装在所述底座上的光源；安装在所述底座上的光学器件，其引导从所述光源发出的光；结合到所述底座上以保护所述光源和光学器件的盖元件，其具有朝向所述第一凹槽的第二凹槽；和结合在所述第一和第二凹槽中以通过调节通过所述光学器件传导的光的分布而形成增强近场的纳米孔径。 
附图说明
本发明的以上以及其它特点和优点将在以下参照附图对示例性实施例的详细描述中变得更加显见。所述附图中： 
图1是传统热辅助磁记录(HAMR)头的示意图； 
图2是根据本发明实施例的光传送模块的横截面图； 
图3是图2所示光传送模块的分解透视图； 
图4A至4C示出了根据本发明不同实施例的光传送模块的纳米孔径； 以及 
图5是根据本发明实施例的热辅助磁记录(HAMR)头的示意图。 
以下将参照附图更加详细地说明本发明，本发明的示例性实施例图示于附图中。 
图2是根据本发明实施例的光传送模块100的横截面图。图3是光传送模块100的分解透视图。 
参照图2和3，光传送模块100包括底座110、安装在底板110上的光源133和引导光的光学器件131、结合到底座110上以保护光源133和光学器件131的盖元件120、以及形成增强近场的纳米孔径140。光学器件131包括光波导132或诸如折射率渐变(GRIN)透镜或棒之类的透镜。在本发明中，使用了光波导132，并且省略对采用透镜作为光学器件131的实施例的描述。 
光传送模块100还可以包括光电探测器135，其接收从光源133发出的光的一部分，以监测光源133的光输出。 
底座110由诸如硅之类的材料制成，其具有第一凹槽111。 
光源133安装在底座110上，并辐射预定波长的光束。光源133可以是辐射具有预定偏振的光的激光二极管。 
光波导132被结合到底座110上，其将从光源133辐射来的光引向纳米孔径140。光波导132通过全内反射来引导入射光，其由相对于底座110和盖元件120具有相对较高的折射率的材料制成。 
光波导132是平面的，如图2所示，并且其加强平行于光波导132的出射表面132a的宽度方向的偏振。本实施例的光波导132较为简单，其不包括纳米孔径140，因此易于制造。 
盖元件120结合到底座110的顶面上，其保护光源133、光波导132和光电探测器135。因此，可以减小对光源133的光发射表面133a和133b以及光电探测器135的光接收表面135a的沾污。盖元件120具有朝向第一凹槽111的第二凹槽121。 
因此，光波导132与纳米孔径140之间的精确偏振对准可以通过在考虑了入射光的偏振的情况下将纳米孔径140安装在第一和第二凹槽111和121 
盖元件120还包括连接到底座110的结合桥125。结合桥125朝向底座110突出，并围绕光源133、光波导132和光电探测器135设置。 
容纳光波导132的第一空间127和容纳光源133和光电探测器135的第二空间129形成在两个结合桥125之间。因此，当盖元件120结合到底座110上时，可以防止损坏光源133和光电探测器135的电接线。 
纳米孔径140结合在第一凹槽111和第二凹槽121中。纳米孔径140通过调节通过光波导132传导来的光的分布形成增强近场。图4A至4C示出了根据本发明不同实施例的光传送模块的纳米孔径。 
图4A示出了具有“C”形状的纳米孔径141。参照图3和4A，通过光波导132传导的光是偏振的，即，电场
Figure A20061012132700071
平行于出射表面132a的宽度方向偏振。在如图4A所示设置C形状的纳米孔径141的情况下，电场通过纳米孔径141的狭窄中心中的电偶极子振动得到增强，从而较宽面积上的光能量可以被聚焦于局部位置。因此，可以透射出具有部分增强的光能量的光。L表示入射在纳米孔径141上的光的光束半径。 
图4B示出蝴蝶结形纳米孔径143。图4C示出X形纳米孔径145。在图4B和4C所示的孔径143和145中，形成在孔径143和145中心点处的电场大大提高，从而可以象图4A中一样将光能量聚焦于局部位置。 
图5是根据本发明实施例的热辅助磁记录(HAMR)头的示意图。参照图5，HAMR头包括磁记录单元200和用于加热磁记录介质300的光传送模块100。 
磁记录单元200包括向磁记录介质300施加记录磁场的记录极210、通过磁轭230与记录极210磁连接以形成磁通路M的返回极220、和绕在磁轭230上的磁化线圈240。磁记录单元200可以包括记录头(未示出)。记录头是本领域所公知的，因此省略对其的描述。 
光传送模块100利用近场照射加热磁记录介质300的预定部分A’，并且其形成为单个单元。光传送模块100包括附接到磁记录单元200上的底座110，并且光学器件131、光源133、监测光输出的光电探测器135、盖元件120和纳米孔径140连接到底座110上。光传送模块100与图2至4C所示的光传送模块相同，因此不再重复对其的描述。 
磁记录介质300相对于HAMR头沿方向D’移动。被加热部分A’由于磁记录介质300的相对运动而移动到记录极210下方。相应地，由于记录极210对被加热部分A’垂直进行磁记录，所以可以防止磁记录中的热学不稳定。
由于底座110的外表面附接到记录极210的外侧，所以当磁记录单元200通过气浮系统从磁记录介质300向上移动时，可以保持纳米孔径140和磁记录介质300之间的预定距离。 
在根据本发明的光传送模块中，利用底座和盖元件来安装光学器件和纳米孔径，从而可以实现光学器件和纳米孔径之间的精确对准。而且，纳米孔径没有附接到光学器件的末端，而是独立制造的，所以制造工序较容易。此外，由于光源和用于监测的光电探测器安装在盖元件的内部空间里，所以可以减小对其的沾污。 
此外，由于光传送模块形成为单个单元并且附接到磁记录单元上，所以根据本发明的HAMR头的结构简化了，从而制造工序的数量和制造成本都降低了。 
尽管已经参照示例性实施例具体示出并描述了本发明，但是本领域技术人员应该理解，在不背离如所附权利要求限定的本发明的精神和范围的情况下，可以对这些实施例做出各种形式和细节的改变。 

Claims (9)

1.一种光传送模块，其包括：
具有第一凹槽的底座；
安装在所述底座上的光源；
安装在所述底座上的光学器件，其引导从所述光源发出的光；
结合到所述底座上以保护所述光源和光学器件的盖元件，其具有朝向所述第一凹槽的第二凹槽；和
结合在所述第一和第二凹槽中以通过调节通过所述光学器件传导的光的分布而形成增强近场的纳米孔径，
其中，所述盖元件包括朝向所述底座并设置在所述光源、光学器件和光电探测器外侧的结合桥。
2.如权利要求1所述的光传送模块，其中，所述光学器件包括用于引导入射光的光波导或透镜。
3.如权利要求1所述的光传送模块，其中，所述光电探测器设置在所述底座和盖元件之间，其接收从所述光源发出的光的一部分以监测所述光源的光输出。
4.如权利要求3所述的光传送模块，其中，所述光学器件包括用于引导入射光的光波导或透镜。
5.一种热辅助磁记录头，其包括：
磁记录单元，该磁记录单元包括：施加记录磁场的记录极；和与所述记录极磁连接以形成磁通路的返回极；以及
光传送模块，该光传送模块包括：具有第一凹槽的底座；安装在所述底座上的光源；安装在所述底座上的光学器件，其引导从所述光源发出的光；结合到所述底座上以保护所述光源和光学器件的盖元件，其具有朝向所述第一凹槽的第二凹槽；和结合在所述第一和第二凹槽中以通过调节通过所述光学器件传导的光的分布而形成增强近场的纳米孔径，
其中，所述盖元件还包括朝向所述底座并设置在所述光源、光学器件和光电探测器外侧的结合桥。
6.如权利要求5所述的热辅助磁记录头，其中，所述光学器件包括用于引导入射光的光波导或透镜。
7.如权利要求5所述的热辅助磁记录头，其中，所述光传送模块还包括置于所述底座和盖元件之间的光电探测器，该光电探测器接收从光源发出的光的一部分以监测光源的光输出。
8.如权利要求5所述的热辅助磁记录头，其中，所述底座的外表面附接到所述记录极的外侧。
9.如权利要求8所述的热辅助磁记录头，其中，所述光电探测器置于所述底座和盖元件之间，其接收从所述光源发出的光的一部分以监测光源的光输出。
CN200610121327XA 2005-10-06 2006-08-21 光传送模块和使用该模块的热辅助磁记录头 Expired - Fee Related CN1945712B (zh)

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Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030198146A1 (en) * 2002-04-18 2003-10-23 Seagate Technology Llc Heat assisted magnetic recording head with multilayer electromagnetic radiation emission structure
KR100707209B1 (ko) * 2006-01-11 2007-04-13 삼성전자주식회사 열보조 자기기록 헤드 및 그 제조방법
JP4947794B2 (ja) * 2007-11-21 2012-06-06 セイコーインスツル株式会社 情報記録再生装置
US7986592B2 (en) * 2008-03-10 2011-07-26 Hitachi Global Storage Technologies, Netherlands B.V. Components and assembly procedure for thermal assisted recording
US8092704B2 (en) 2008-12-30 2012-01-10 Hitachi Global Storage Technologies Netherlands B.V. System, method and apparatus for fabricating a c-aperture or E-antenna plasmonic near field source for thermal assisted recording applications
US8169881B2 (en) 2008-12-31 2012-05-01 Hitachi Global Storage Technologies Netherlands B.V. Thermally assisted recording head having recessed waveguide with near field transducer and methods of making same
US7880996B2 (en) * 2008-12-31 2011-02-01 Hitachi Global Storage Technologies Netherlands B.V. Ridge wave-guide for thermal assisted magnetic recording
US8472286B2 (en) 2008-12-31 2013-06-25 HGST Netherlands B.V. Near field transducer having main body and wings extending therefrom and only electrically coupled thereby
US8625941B1 (en) 2010-05-20 2014-01-07 Western Digital (Fremont), Llc Broadband reflective waveguide metal gratings and their formation
US8339906B2 (en) 2010-06-30 2012-12-25 Seagate Technology Llc Transducer assembly for heat assisted magnetic recording light delivery
US8437229B2 (en) 2010-07-21 2013-05-07 Seagate Technology Llc Transducer assembly having grating slits parallel to longitudinal axis of waveguide
US8456964B1 (en) 2010-11-16 2013-06-04 Western Digital (Fremont), Llc Energy assisted magnetic recording head having a reflector for improving efficiency of the light beam
US8593914B2 (en) 2010-12-22 2013-11-26 Western Digital (Fremont), Llc Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive
US8451695B2 (en) 2011-06-23 2013-05-28 Seagate Technology Llc Vertical cavity surface emitting laser with integrated mirror and waveguide
US8325569B1 (en) 2011-06-27 2012-12-04 Western Digital (Fremont), Llc EAMR head having improved optical coupling efficiency
US8897103B2 (en) 2011-09-27 2014-11-25 Western Digital Technologies, Inc. Disk drive calibrating a laser write power for heat assisted magnetic recording
US8675455B1 (en) 2012-02-17 2014-03-18 Western Digital (Fremont), Llc Systems and methods for controlling light phase difference in interferometric waveguides at near field transducers
US8670294B1 (en) 2012-02-17 2014-03-11 Western Digital (Fremont), Llc Systems and methods for increasing media absorption efficiency using interferometric waveguides
US9286920B1 (en) 2013-01-31 2016-03-15 Western Digital (Fremont), Llc Method for compensating for phase variations in an interferometric tapered waveguide in a heat assisted magnetic recording head
US9336814B1 (en) 2013-03-12 2016-05-10 Western Digital (Fremont), Llc Inverse tapered waveguide for use in a heat assisted magnetic recording head
US8861124B1 (en) 2013-03-14 2014-10-14 Western Digital (Fremont), Llc Integrated sensor for monitoring laser power in a heat assisted magnetic recording disk drive
US8897102B1 (en) 2013-04-02 2014-11-25 Western Digital (Fremont), Llc Method and system for measuring light delivery offsets in a heat assisted magnetic recording head
US9064527B1 (en) 2013-04-12 2015-06-23 Western Digital (Fremont), Llc High order tapered waveguide for use in a heat assisted magnetic recording head
US9064528B1 (en) 2013-05-17 2015-06-23 Western Digital Technologies, Inc. Interferometric waveguide usable in shingled heat assisted magnetic recording in the absence of a near-field transducer
US8923102B1 (en) 2013-07-16 2014-12-30 Western Digital (Fremont), Llc Optical grating coupling for interferometric waveguides in heat assisted magnetic recording heads
US8947985B1 (en) 2013-07-16 2015-02-03 Western Digital (Fremont), Llc Heat assisted magnetic recording transducers having a recessed pole
US9105286B2 (en) * 2013-07-30 2015-08-11 HGST Netherlands B.V. Method using epitaxial transfer to integrate HAMR photonic integrated circuit (PIC) into recording head wafer
US9001628B1 (en) 2013-12-16 2015-04-07 Western Digital (Fremont), Llc Assistant waveguides for evaluating main waveguide coupling efficiency and diode laser alignment tolerances for hard disk
US9142233B1 (en) 2014-02-28 2015-09-22 Western Digital (Fremont), Llc Heat assisted magnetic recording writer having a recessed pole
US9190085B1 (en) 2014-03-12 2015-11-17 Western Digital (Fremont), Llc Waveguide with reflective grating for localized energy intensity

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1349292A (zh) * 2001-11-16 2002-05-15 清华大学 近场光学纳米孔径激光器
US6513993B1 (en) * 1999-09-28 2003-02-04 Sumitomo Electric Industries, Ltd. Optical communications device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02260205A (ja) * 1989-03-31 1990-10-23 Sharp Corp 光磁気複合ヘッド
JP2864702B2 (ja) * 1990-09-12 1999-03-08 ブラザー工業株式会社 光集積型ピックアップ
KR100198460B1 (ko) * 1996-10-29 1999-06-15 이계철 브이홈에 정렬된 렌즈를 가진 광모듈 및 그 제작방법
JP2000187877A (ja) 1998-12-24 2000-07-04 Sharp Corp 光導波路素子および導波路型光ヘッド
US6700856B2 (en) * 1999-12-28 2004-03-02 Fuji Xerox Co., Ltd. Optical head, magneto-optical head, disk apparatus and manufacturing method of optical head
US7345316B2 (en) * 2000-10-25 2008-03-18 Shipley Company, L.L.C. Wafer level packaging for optoelectronic devices
US20030198146A1 (en) * 2002-04-18 2003-10-23 Seagate Technology Llc Heat assisted magnetic recording head with multilayer electromagnetic radiation emission structure
AU2003218274A1 (en) * 2002-06-28 2004-01-19 Seagate Technology Llc Heat assisted magnetic recording head with a planar waveguide
US6999001B2 (en) * 2002-07-02 2006-02-14 Kabushiki Kaisha Toshiba Card processing system and card processing method on toll road
KR100601931B1 (ko) * 2003-06-16 2006-07-14 삼성전자주식회사 박형 광픽업
JP2005259329A (ja) * 2004-02-12 2005-09-22 Sony Corp チルト制御方法及び光ディスク装置。

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6513993B1 (en) * 1999-09-28 2003-02-04 Sumitomo Electric Industries, Ltd. Optical communications device
CN1349292A (zh) * 2001-11-16 2002-05-15 清华大学 近场光学纳米孔径激光器

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