Abstract： Based on the Fresnel--Kirchhoff diffraction theory, we build up a Gaussian diffraction model of metal-oxide-type super-resolution near field structure (super-RENS), which can describe far field optical properties. The spectral contrast induced by refractive index and the structural changes in AgOx, PtOx and PdOx thin films, which are the key functional layers in super-RENS, are studied by using this model. Comparison results indicate that the spectral contrast depends intensively on the laser-induced distribution and change of the refractive index in the metal-oxide films. The readout mechanism of the metal-oxide-type super-RENS optical disc is further clarified. This Gaussian diffraction model can be used as a simple and effective method for choosing proper active materials in super-RENS.
QU Qing-Ling;WANG Yang;GAN Fu-Xi. Numerical Analysis and Comparison of Three Metal-Oxide-Type Super-Resolution Near Field Structures[J]. 中国物理快报, 2006, 23(12): 3363-3365.
QU Qing-Ling, WANG Yang, GAN Fu-Xi. Numerical Analysis and Comparison of Three Metal-Oxide-Type Super-Resolution Near Field Structures. Chin. Phys. Lett., 2006, 23(12): 3363-3365.
2006, Vol. 23 
