论文部分内容阅读
基于高斯聚焦激光束热效应的超分辨近场结构光盘存储(孔径型Super_RENS)中,应用光学特性导纳矩阵建立的盘片光传导模型,采用有限元分析软件FEMLAB对不同激光功率和脉宽下的Sb掩膜层的孔径形成情况进行数值仿真.结果表明,当一定脉宽的激光功率超过介质的阈值时,掩膜层将有超分辨孔径形成,且孔径大小随功率的增大而增大.理论分析与孔径型Super_RENS光盘样片在不同激光功率下进行写入的实验结果相符,说明光热效应可以较好地描述孔径型Super_RENS光盘掩膜层孔径形成的过程.
Based on the Gaussian focused laser beam thermal effect in the super-resolution near-field structure optical disk storage (aperture type Super_RENS), the optical conductivity model was established by using the optical property admittance matrix. The finite element analysis software FEMLAB was used to analyze the laser power and pulse width The results show that when the pulse laser power exceeds the medium threshold, the mask layer will be formed with super-resolution aperture, and the aperture size will increase with the increase of power. The theoretical analysis is in good agreement with experimental results of the aperture-type Super_RENS optical disk written under different laser powers, which shows that the photothermal effect can well describe the aperture formation of the aperture-type Super_RENS optical disk mask layer.