JP5411206B2 - データ記憶のための機器 - Google Patents
データ記憶のための機器 Download PDFInfo
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- JP5411206B2 JP5411206B2 JP2011123685A JP2011123685A JP5411206B2 JP 5411206 B2 JP5411206 B2 JP 5411206B2 JP 2011123685 A JP2011123685 A JP 2011123685A JP 2011123685 A JP2011123685 A JP 2011123685A JP 5411206 B2 JP5411206 B2 JP 5411206B2
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- electrode
- phase change
- storage medium
- waveguide
- light
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- 230000002349 favourable effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/9506—Optical discs
-
- 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
- G11B5/455—Arrangements for functional testing of heads; Measuring arrangements for heads
- G11B5/4555—Arrangements for functional testing of heads; Measuring arrangements for heads by using a spin-stand, i.e. a spinning disc or simulator
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
- G11B7/00375—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs arrangements for detection of physical defects, e.g. of recording layer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/122—Flying-type heads, e.g. analogous to Winchester type in magnetic recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
- G11B7/124—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate the integrated head arrangements including waveguides
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1362—Mirrors
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1384—Fibre optics
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1387—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector using the near-field effect
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/04—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electric resistance; Record carriers therefor
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
レーザ・スポットのサイズを小さくするには、より短い波長のレーザ及び/又はより大きい開口数のレンズを使用する必要がある。CDからDVD、DVDからDVD−ブルーレイ(Blu−Ray)への移行に際して、780nmでの0.55から、635nmでは0.6よりも大きくし、最終的には、405nmで0.85に開口数を大きくし、レーザの波長を短くした。より短い波長の光及びより大きい開口数(NA)のレンズでは、より長い波長及びより小さいNAの光学系を使用するシステムに比べて、集束スポットの焦点深度(DOF)がより浅くなる。DOFは、以下のように表現することができる。
しかし、例えばいわゆる超解像効果を利用して、このような記録材料に回折限界未満のサイズのマークを書き込むことのできる遠視野光技術が報告されている。光データ記憶における制限要因は、このような小さなマークを、過剰な読出しレーザ出力を印加することによって情報を破壊することなく、十分な搬送波対雑音比(CNR)で読み出す能力である。
50 固体浸漬ミラー
54 光ファイバ
56 ミラー
60 副層
62 記録層
64 カバー層
66 検出器
70 固体浸漬ミラー構造体
72 平面導波路
74 放物面鏡
76 第1格子
78 第2格子
96 金属変換器
102 固体浸漬ミラー構造体
106 格子
110 透明層
112 金属ピン
116 相変化記憶媒体
118 空気軸受け
122 検出器
124 固体浸漬ミラー構造体
126 くぼみ
132 導波路
133 相変化記憶媒体
134 空気軸受け
150 固体浸漬ミラー構造体
152 コア層
154 金属ピン
158 相変化記憶媒体
162、164 クラッド層
166、168 ガラス被膜
174 検出器
176 多モード導波路
180 変換器、ピン
182 欠陥
204 導波路
210 記憶媒体
212 記録トラック
226 導波路
234 記録トラック
Claims (6)
- 空気軸受け表面を有するスライダと、
前記空気軸受け表面に隣接して位置決めされた相変化記憶媒体と、
前記空気軸受け表面に隣接する焦点に電磁放射を方向づけて、近接場放射を利用して前記相変化記憶媒体の一部の相を変化させる第1導波路と、
前記第1導波路と並列に配置されるとともに、前記相変化記憶媒体に隣接して第1端部が位置決めされた第1電極と、
前記第1電極の第2端部に接続され、前記相変化記憶媒体の記録トラックにおける導電率の変化に応じて変化する前記第1電極内の電流を検出するセンサと、
前記相変化記憶媒体から反射された電磁放射を検出する検出器と、
前記相変化記憶媒体から反射された電磁放射を収集し、前記検出器に向かって前記反射された電磁放射を送るために、前記焦点に隣接して位置決めされた構造体とを備え、
前記構造体は、前記第1導波路を取り囲むように配置される第2導波路を含む、機器。 - 前記第1電極と前記相変化記憶媒体の間に接続された電圧源をさらに備える、請求項1に記載された機器。
- 前記相変化記憶媒体に隣接して第1端部が位置決めされた第2電極であって、前記第1電極の前記第1端部と前記第2電極の前記第1端部が、隙間により離間されている第2電極と、
前記第1電極と前記第2電極の間に接続された電圧源とをさらに備える、請求項1に記載された機器。 - 近接場光を利用して相変化記録媒体の一部の相を変化させる機器であって、
相変化記憶媒体と、
前記相変化記録媒体に隣接する焦点に電磁放射を方向づけて、近接場放射を利用して前記相変化記憶媒体の一部の相を変化させる第1導波路と、
前記相変化記憶媒体に隣接して第1端部が位置決めされた第1電極と、
前記第1電極の第2端部に接続され、前記相変化記憶媒体の記録トラックにおける導電率の変化に応じて変化する前記第1電極内の電流を検出するセンサと、
前記相変化記憶媒体から反射された電磁放射を検出する検出器と、
前記相変化記憶媒体から反射された電磁放射を収集し、前記検出器に向かって前記反射された電磁放射を送るために、前記焦点に隣接して位置決めされた構造体とを備え、
前記構造体は、前記第1導波路を取り囲むように配置される第2導波路を含む、機器。 - 前記第1電極と前記相変化記憶媒体の間に接続された電圧源をさらに備える、請求項4に記載された機器。
- 前記相変化記憶媒体に隣接して第1端部が位置決めされた第2電極であって、前記第1電極の前記第1端部と前記第2電極の前記第1端部が、隙間により離間されている第2電極と、
前記第1電極と前記第2電極の間に接続された電圧源をさらに備える、請求項4に記載された機器。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/021,876 | 2004-12-22 | ||
US11/021,876 US7596072B2 (en) | 2004-12-22 | 2004-12-22 | Optical recording using a waveguide structure and a phase change medium |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005367597A Division JP5064680B2 (ja) | 2004-12-22 | 2005-12-21 | 導波路構造体及び相変化媒体を使用する光記録 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011210363A JP2011210363A (ja) | 2011-10-20 |
JP5411206B2 true JP5411206B2 (ja) | 2014-02-12 |
Family
ID=36595571
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005367597A Expired - Fee Related JP5064680B2 (ja) | 2004-12-22 | 2005-12-21 | 導波路構造体及び相変化媒体を使用する光記録 |
JP2011123685A Expired - Fee Related JP5411206B2 (ja) | 2004-12-22 | 2011-06-01 | データ記憶のための機器 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005367597A Expired - Fee Related JP5064680B2 (ja) | 2004-12-22 | 2005-12-21 | 導波路構造体及び相変化媒体を使用する光記録 |
Country Status (4)
Country | Link |
---|---|
US (2) | US7596072B2 (ja) |
JP (2) | JP5064680B2 (ja) |
CN (1) | CN1831987B (ja) |
MY (1) | MY147313A (ja) |
Families Citing this family (55)
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US7473916B2 (en) * | 2005-12-16 | 2009-01-06 | Asml Netherlands B.V. | Apparatus and method for detecting contamination within a lithographic apparatus |
WO2007105393A1 (ja) * | 2006-03-14 | 2007-09-20 | Konica Minolta Opto, Inc. | 記録ヘッド及び記録装置 |
WO2007105392A1 (ja) * | 2006-03-14 | 2007-09-20 | Konica Minolta Opto, Inc. | 記録ヘッド及び記録装置 |
US7643248B2 (en) * | 2006-06-30 | 2010-01-05 | Seagate Technology Llc | Optoelectronic emitter mounted on a slider |
EP1926089B1 (en) * | 2006-11-21 | 2010-01-13 | Nitto Denko Corporation | Suspension board with circuit and producing method thereof |
WO2008081909A1 (ja) * | 2006-12-27 | 2008-07-10 | Fujitsu Limited | ヘッドサスペンションアセンブリおよびキャリッジアセンブリ並びにヘッドスライダアセンブリの製造方法 |
JP2009093774A (ja) * | 2007-10-12 | 2009-04-30 | Fujitsu Ltd | ヘッドスライダ |
JP2009104734A (ja) * | 2007-10-25 | 2009-05-14 | Konica Minolta Opto Inc | 微小スポット生成構造及び光ヘッド |
JP2010015641A (ja) * | 2008-07-04 | 2010-01-21 | Nitto Denko Corp | 回路付サスペンション基板およびその製造方法 |
JP4989572B2 (ja) * | 2008-07-07 | 2012-08-01 | 日東電工株式会社 | 回路付サスペンション基板およびその製造方法 |
US8031433B2 (en) | 2008-09-05 | 2011-10-04 | Headway Technologies, Inc. | Method to make an integrated side shield PMR head with non conformal side gap |
US8036069B1 (en) | 2010-05-28 | 2011-10-11 | Headway Technologies, Inc. | Plasmon shield to shape and reduce optical spot |
US8059354B2 (en) * | 2009-01-29 | 2011-11-15 | Seagate Technology Llc | Transducer for data storage device |
US8274866B2 (en) * | 2009-03-11 | 2012-09-25 | Konica Minolta Opto, Inc. | Optical recording head and optical recording apparatus |
WO2010150581A1 (ja) * | 2009-06-23 | 2010-12-29 | コニカミノルタオプト株式会社 | 導光ユニットおよび情報記録装置 |
US8254212B2 (en) * | 2009-06-25 | 2012-08-28 | Seagate Technology Llc | Integrated heat assisted magnetic recording device |
JP5597000B2 (ja) * | 2009-09-30 | 2014-10-01 | セイコーインスツル株式会社 | 記録用フレクシャ、それを備えるヘッドジンバルアセンブリ及び記録用フレクシャの製造方法 |
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JP5064680B2 (ja) | 2012-10-31 |
CN1831987A (zh) | 2006-09-13 |
JP2011210363A (ja) | 2011-10-20 |
US7596072B2 (en) | 2009-09-29 |
US20100008208A1 (en) | 2010-01-14 |
US20060133230A1 (en) | 2006-06-22 |
CN1831987B (zh) | 2011-04-20 |
US8009545B2 (en) | 2011-08-30 |
MY147313A (en) | 2012-11-30 |
JP2006179169A (ja) | 2006-07-06 |
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