Challenge of Ultrafast All-Optical Magnetic Recording Using Localized Circularly Polarized Light Excited by Nano-Antennas

2012 Fiscal Year Final Research Report

• Project/Area Number: 22560349
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: Nihon University
• Principal Investigator: OHNUKI Shinichiro 日本大学, 理工学部, 准教授 (80386002)
• Co-Investigator(Renkei-kenkyūsha): NAKAGAWA Katsuji 日本大学, 理工学部, 教授 (20221442) ; ITOH Akiyoshi 日本大学, 理工学部, 教授 (60059962) ; TSUKAMOTO Arata 日本大学, 理工学部, 准教授 (30318365) ; ASHIZAWA Yoshito 日本大学, 理工学部, 助教 (10453911)
• Project Period (FY): 2010 – 2012
• Keywords: マイクロ波 / ミリ波 / 計算電磁気学

Research Abstract

We have designed ultra fast and ultra high-density magnetic recording system using electromagnetic simulation. Our novel system is 100,000 times faster than conventional one and recording density is over 2Tbit/inch^2. The system consists of plasmonic cross antennas to generate the localized circularly polarized light and bit-patterned media to store information. Nano antennas were fabricated and we had a success of an experiment of ultra fast magnetic recording using a femto laser pulse.

Research Products

• [Journal Article] Coupled Analysis of Maxwell- Schrodinger Equations by Using the Length Gauge - Harmonic Model of a Nanoplate Subjected to a 2-D Electromagnetic Field -International Journal of Numerical Modeling; (2013)
  • Author(s): S. Ohnuki, T. Takeuchi, T. Sako, Y.Ashizawa, K. Nakagawa, and M. Tanaka
  • Journal Title: Electronic Networks, Devices and Fields Volume: (in press)
  • DOI: DOI:10.1002/jnm.1896.
  • Peer Reviewed
• [Journal Article] Circularly Polarized Light Generated by Plasmon Antenna for All-Optical Magnetic Recording (2013)
  • Author(s): K. Tamura, T. Ota, Y. Ashizawa, A.Tsukamoto, A. Itoh, S. Ohnuki, and K. Nakagawa
  • Journal Title: Journalof the Magnetics Society of Japan Volume: 37 Pages: 115-118
  • Peer Reviewed
• [Journal Article] Thermally Assisted Magnetic Recording Applying Optical Near Field with Ultra Short-Time Heating (2013)
  • Author(s): K. Nakagawa, A. Tajiri, K. Tamura, S.Toriumi, Y. Ashizawa, A. Tsukamoto, A. Itoh, Y. Sasaki, S. Saito, M. Takahashi, and S. Ohnuki
  • Journal Title: Journal of the Magnetics Society of Japan Volume: 37 Pages: 119-122
  • DOI: DOI:10.3379/msjmag.1302R016
  • Peer Reviewed
• [Journal Article] ヘテロジニアスCPUによるモーメント法の高速化 (2013)
  • Author(s): 平野正樹,岸本誠也,大貫進一郎
  • Journal Title: 電子情報通信学会論文誌C Volume: J96-C,6 Pages: 149-150
  • Peer Reviewed
• [Journal Article] Thermally Assisted Magnetic Recording Test Method Applying Surface Plasmon Antenna Stacked on Granular Media (2012)
  • Author(s): K. Nakagawa, Y. Osa, A. Tajiri, Y.Ashizawa, S. Ohnuki, Y. Sasaki, K. Inoue, S. Hinata, G. X. Du, S. Saito, M. Takahashi, and A. Itoh
  • Journal Title: Journal of the Magnetics Society of Japan Volume: 36 Pages: 58-61
  • DOI: DOI:10.3379/msjmag.1110M001
  • Peer Reviewed
• [Journal Article] Dependence of Circularly Polarized Light Excited by Plasmon Aperture on Relative Position to Magnetic Particles for All-Optical Magnetic Recording (2012)
  • Author(s): T. Ota, Y. Ashizawa, K. Nakagawa, S.Ohnuki, H. Iwamatsu, A. Tsukamoto, and A. Itoh
  • Journal Title: Journal of the MagneticsSociety of Japan Volume: 36 Pages: 66-69
  • DOI: DOI:10.3379/msjmag.1108M001.
  • Peer Reviewed
• [Journal Article] Time Domain Analysis of Nanoscale Electromagnetic Problems by a Boundary Integral Equation Method with Fast Inverse Laplace Transform (2012)
  • Author(s): S. Kishimoto, S. Ohnuki, Y. Ashizawa, K.Nakagawa, and W. C. Chew
  • Journal Title: Journal of Electromagnetic Waves and Applications Volume: 26 8-9 Pages: 997-1006
  • DOI: DOI:10.1080/09205071.2012.710315
  • Peer Reviewed
• [Journal Article] Optimization of Field Decomposition for a Mode Matching Technique (2012)
  • Author(s): S. Ohnuki, T. Mochizuki, K. Kobayashiand T. Yamasaki
  • Journal Title: IEICE Trans. Electron Volume: E95-C,1 Pages: 101-104
  • DOI: DOI:10.1587/transele.E95.C.101
  • Peer Reviewed
• [Journal Article] Error Analysis of Multilevel Fast Multipole Algorithm for Electromagnetic Scattering Problems (2012)
  • Author(s): S. Kishimoto and S. Ohnuki
  • Journal Title: IEICE Trans. Electron Volume: E95-C,1 Pages: 71-78
  • DOI: DOI:10.1587/transele.E95.C.71.
  • Peer Reviewed
• [Journal Article] Fast Computation for Electromagnetic Scattering Problems Using aHeterogeneous Multi-Core Processor (2011)
  • Author(s): M. Hirano and S. Ohnuki
  • Journal Title: IEICE Electronics Express Volume: 8,16 Pages: 1330-1336
  • DOI: DOI:10.1587/elex.8.1330
  • Peer Reviewed
• [Journal Article] Confined Circularly Polarized Light Generated by Nano-Size Aperture for High Density All-Optical Magnetic Recording (2011)
  • Author(s): K. Nakagawa, Y. Ashizawa, S. Ohnuki,A. Itoh, and A. Tsukamoto
  • Journal Title: Journal of Applied Physics Volume: 109, 07B735
  • DOI: DOI:10.1063/1.3556924
  • Peer Reviewed
• [Journal Article] Analysis of Transient Electromagnetic Scattering from Two-Dimensional Open-EndedStructures by Numerical Inversion of Laplace Transform (2011)
  • Author(s): S. Ohnuki and Y. Kitaoka
  • Journal Title: IEICE Trans. Electron. Volume: E94-C, 1 Pages: 68-71
  • Peer Reviewed
• [Presentation] Transient Analysis of Electromagnetic Fields of Nano Structures by Integral Solvers with FILT (2013)
  • Author(s): S. Kishimoto, S. Ohnuki, Y. Ashizawa, K.Nakagawa, S. Y. Huang, and W. C. Chew
  • Organizer: 2013 International Symposium on Electromagnetic Theory
  • Place of Presentation: Hiroshima, Japan
  • Year and Date: 20130520-24
• [Presentation] 高密度光直接記録に向けたプラズモニッククロスアンテナの設計 (2013)
  • Author(s): 大貫進一郎,加藤司,芦澤好人,中川活二
  • Organizer: 電子情報通信学会2013年総合大会
  • Place of Presentation: 岐阜大学(依頼講演).
  • Year and Date: 2013-03-20
• [Presentation] Analysis of Electromagnetic fields of a Plasmonic Cross Antenna with Bit-Patterned Media (2012)
  • Author(s): H. Iwamatsu, T. Kato, S. Ohnuki, Y.Ashizawa, K. Nakagawa, and W. C. Chew
  • Organizer: 2012 IEEE International Symposium on Antennas and Propagation and USNC/URSI Radio Science Meeting
  • Place of Presentation: Chicago, Illinois, USA
  • Year and Date: 20120708-14
• [Presentation] 積分方程式法とFILT法によるナノ領域過渡電磁界解析 (2012)
  • Author(s): 岸本誠也,大貫進一郎,芦澤好人,中川活二,WengChoChew
  • Organizer: 電気学会研究会資料
  • Year and Date: 20120500
• [Presentation] 光直接記録のためのプラズモニッククロスアンテナと粒子媒体の解析-粒子媒体の配置パターンによる電界強度の検討- (2011)
  • Author(s): 岩松寛,加藤司,大貫進一郎,芦澤好人,中川活二,WengChoChew
  • Organizer: 電気学会研究会資料
  • Year and Date: 20111100
• [Presentation] Nano-Sized Circularly Polarized Light in Medium Generated by an Asymmetric Cross Antenna (2011)
  • Author(s): H. Iwamatsu, T. Kato, S. Ohnuki, Y.Ashizawa, and K. Nakagawa
  • Organizer: 2011 IEEE International Symposium on Antennas and Propagation and USNC/URSI Radio Science Meeting
  • Place of Presentation: Spokane, Washington, USA
  • Year and Date: 20110703-08
• [Patent(Industrial Property Rights)] 報記録ヘッド,情報記録装置,情報記録方法及び光デバイス (2010)
  • Inventor(s): 中川活二,芦澤好人,大貫進一郎,伊藤彰義,塚本新
  • Industrial Property Rights Holder: 中川活二,芦澤好人,大貫進一郎,伊藤彰義,塚本新
  • Patent Publication Number: 特許特開2012-22760
  • Acquisition Date: 2010-07-16