本项目试图突破现有硬盘的磁写磁读技术框架，提出将超快激光与表面等离激元SPPs技术相结合，在纳米尺度实现光致磁变的全光写入的新思路。其基本特征是将飞秒激光通过特殊设计的图案化金属基纳米结构，在近场距离内形成高强度等离子振荡，从而产生偏振向可控制的纳米尺度二次光。该光束首先对磁性存储介质进行瞬态加热，降低其矫顽力，再通过偏振光与磁介质相互作用的反法拉第效应产生等效磁场，对磁性介质进行超快写入。通过浮动技术保持等离基元与磁记录介质表面的近场距离，从而保证10Tb/sqrin超记录密度的实现。本项目的研究将为下一代超高密度硬盘提供新原理与新技术，为存储设备适应大数据时代数据的爆炸性增长打下坚实的基础。

In order to break through the existing magnetic read / write framework of magnetic hard disk drives, the proposal presents an innovative way to take the advantages of both ultra-fast laser and surface plasmatic polaritons to realize all optical recording in nanometer scale. The highlighted features include the sophisticated designs of patterned metallic nanometer structures, from which the polarization specified light spot can be stimulated by the incidence of a beam of femto-second laser. The light spot heats the magnetic media first, greatly lowers down the media’s coercivity, and then writes the media with the equivalent magnetic field produced by inverse Faraday Effect, in pico-seconds. To get the nanometer light spot, an SPPs structure will be integrated to a floating slider, designed to keep the distance between the SPPs and the surface of the media in nanometers, to achieve the 10Tb/sqrin recording density. The research will provide novel principles and technologies for the next generation of ultra-high density hard disk drives, and lay down a solid foundation for mass storage devices for the explosive data growth in big data era.