摘要
给出了超分辨近场结构光盘(Super RENS)读出信号的计算模型。以时域有限差分法为基础,结合高斯光束矢量模型和衍射方法,通过计算得到了物镜出瞳上的读出信号。计算结果表明,Super RENS具有超衍射极限的空间分辨能力,并且其读出信号的特征完全不同于传统光盘。
A calculation model of readout signal from super-resolution near-field structure disk (Super-RENS) is presented. The readout signal on the exit pupil of the objective lens is calculated using finite-difference time-domain method (FDTD) together with a vector model of Gaussian beam and the diffraction method. Calculation results show that Super-RENS disk has a high spatial resolution beyond diffraction limit, and properties of readout signal are quite different from that of conventional optical disk.
出处
《光学技术》
EI
CAS
CSCD
2004年第2期131-134,共4页
Optical Technique
基金
国家重点基础研究发展规划"973"资助项目(G19990330)
