Ultra-fast and ultra-high density magnetic recording applying localized circularly polarized near-field light generated by plasmon antenna

利用等离子体天线产生的局域圆偏振近场光进行超快、超高密度磁记录

• 批准号: 23560413
• 负责人: NAKAGAWA Katsuji
• 金额: $ 3.49万
• 依托单位: Nihon University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560413/
• 关键词: 記憶・記録; 近接場光; データストレージ; 磁気記録; 熱工学; マイクロナノデバイス; 電子・デバイス機器; 電子・デイバス機器; 円偏向

For an ultra-fast and ultra-high density magnetic recording using a photo-induced magnetization reversal phenomenon, we studied 1) establishing a method of confining circularly polarized light into an order of nano-meter size, 2) clarifying transient response of surface plasmon resonance, and 3) verifying an ultra-fast and ultra-high density recording. As a result, a confined small circularly polarized light in an isolated particle medium was confirmed by using both a four-leaf clover aperture and an isolated particle medium. It was shown that the circularly polarized light was able to be generated from surface plasmon polaritons, which propagated at an interface between a metal and a dielectric material. It is found that the circularly polarized light was exited in ~50 fs by a transient response analysis. A tiny magnetic recording mark of 62 x 67 nm2 were written by optical near field generated by a plasmon antenna using a 90-fs pulsed laser.

针对利用光致磁化反转现象的超快超高密度磁记录，我们研究了1）建立将圆偏振光限制在纳米量级的方法，2）澄清表面等离子体共振的瞬态响应，以及3）验证超快超高密度记录。结果表明，利用四叶三叶草光阑和孤立粒子介质，证实了孤立粒子介质中存在受限的小圆偏振光。结果表明，圆偏振光能够从表面等离子体激元产生，其在金属和电介质材料之间的界面处传播。瞬态响应分析表明，圆偏振光在约50 fs内出射。利用等离子体天线产生的光学近场，用90 fs脉冲激光写入62 × 67 nm ~ 2的微小磁记录标记。

项目成果

Circularly Polarized Light Generated by Plasmon Antenna for All-Optical Magnetic Recording

用于全光磁记录的等离激元天线产生的圆偏振光

• 发表时间: 2013
• 期刊: J. Magn. Soc. Jpn.
• 作者: K. Tamura;T. Ota;Y. Ashizawa;A. Tsukamoto;A. Itoh;S. Ohnuki;and K. Nakagawa
• 通讯作者: and K. Nakagawa

Energy Concentration by Plasmonic Waveguide for Highly Efficiency Thermally Assisted Magnetic Recording

通过等离子体波导进行能量集中，实现高效热辅助磁记录

• 发表时间: 2013
• 作者: 田村京介;林 慶彦;芦澤好人;大貫進一郎;中川活二
• 通讯作者: 中川活二

熱アシスト磁気記録のための磁気記録媒体上の正方形アンテナによる近接場光および熱伝導解析

用于热辅助磁记录的磁记录介质上的方形天线近场光学和热传导分析

• 发表时间: 2013
• 作者: Katsuji Nakagawa;Kyosuke Tamura;Yoshito Ashizawa;and Shinichiro Ohnuki;林 慶彦，田村京介，眞野敬史，芦澤好人，大貫進一郎，中川活二
• 通讯作者: 林 慶彦，田村京介，眞野敬史，芦澤好人，大貫進一郎，中川活二

Circularly Polarized Light Created by Surface Plasmon Polaritons for All-optical Magnetic Recording

用于全光磁记录的表面等离子体激元产生的圆偏振光

• 发表时间: 2013
• 作者: K. Nakagawa;K. Tamura;Y. Ashizawa;S. Ohnuki
• 通讯作者: S. Ohnuki

光直接記録のための導波路伝搬表面プラズモンによる局所円偏光生成

通过波导传播表面等离子体激元产生局部圆偏振光，用于直接光学记录

• 发表时间: 2012
• 作者: Takemichi Ishikawa;Shuma Yokoyama;Noboru Harashima;Dai Takahashi;Jun Shiozawa;Michitaka Yoshino;Akira Yasuda;太田武志，田村京介，芦澤好人，大貫進一郎，中川 活二
• 通讯作者: 太田武志，田村京介，芦澤好人，大貫進一郎，中川 活二