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Numerical Analysis and Comparison of Three Metal-Oxide-Type Super-Resolution Near Field Structures |
| QU Qing-Ling;WANG Yang;GAN Fu-Xi |
| Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
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| Cite this article: |
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QU Qing-Ling, WANG Yang, GAN Fu-Xi 2006 Chin. Phys. Lett. 23 3363-3365 |
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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.
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| Keywords:
78.20.-e
02.60.Cb
03.50.-z
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Published: 01 December 2006
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| PACS: |
78.20.-e
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(Optical properties of bulk materials and thin films)
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02.60.Cb
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(Numerical simulation; solution of equations)
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03.50.-z
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(Classical field theories)
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