二维非线性时域有限差分法分析微孔激光器出射光的近场特性  

Near-field Analysis of the Output Light of the VSAL for Near-filed Optical Storage with 2D-NL-FDTD Method

作　　者：焦小瑾[1] 鲁拥华[1] 明海[1] 

机构地区：[1]中国科学技术大学物理系,安徽合肥230026

出　　处：《中国激光》2003年第7期619-623,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金(19974042);国家重大基础研究项目No.973(G1999033002)

摘　　要：微孔激光器(VSAL)作为应用于近场光存储系统中的一种新型光源,它的出射光斑的近场特性对于近场光存储是十分重要的。运用二维非线性时域有限差分法(2D-NL-FDTD)分析VSAL出射端即微孔金属膜的近场光学性质,模拟计算了不同参数的微孔金属膜的光强近场分布,对所得结果加以分析,从光学性质的角度,讨论其在近场光存储中的应用,并给出反映其近场光学特性的相关数据。The very small aperture laser (VSAL) is a important light source used in the near-field optical storage system. So it is necessary for studying the near-field property of VSAL s output light. As the output region of the VSAL. the optical characters and the intensity distribution in the near-field of the metal film with micro-aperture have been numerical simulated using two dimension nonlinear FDTD (2D-NL-FDTD) method. Through analyzing the results from the viewpoint of the optics, the possible application in the near-field optical recording have been discussed, and some data indicating the near-field optical characters of the output light have been given.

关 键 词：信息光学 近场光存储 二维非线性时域有限差分法 微孔激光器 

分 类 号：O438[机械工程—光学工程] TP333.4[理学—光学]