摘要
近几年发展起来的近场光学原理和方法为实现超高密度光学数据存储开辟了新的技术途径。基于近扬光学方法的最小信息记录单元尺寸突破了经典光学分辨率的衍射极限 ,理论存储密度高达 1 0 0 0Gb/平方英寸 ,受到了研究人员和工业界的广泛关注。着重介绍了用于近场光学存储的纳米孔径激光器的原理、结构、优点 ,对它的实现方法和发展状况作了详细的阐述 。
Near-field optical data storage has been attracting more and more attention in r ecent years. It has the advantage that the minimum light spot size is beyond the classic optical diffraction limit. Theoretical recording density of 1000 Gb/in 2 can be achieved. The principle, structure and advantages of nano-aperture lasers (NAL) are introduced especially. Its methods and progress are discussed i n detail. Its future development trends are prospected.
出处
《光学技术》
CAS
CSCD
2002年第4期347-350,共4页
Optical Technique
基金
国家重点基础研究发展规划资助项目 (G19990 330 0 2 )
