スーパーレンズディスクの超解像再生機構における熱効果

概要

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Optical near-field and localized plasmon excited around metal particles was reported to have played an important role in the readout mechanism of a light scattering type super-resolution near-field structure (LS-Super-RENS) disk. However, neither of these has yet been proven using experimental data. We clarified that thermal effects induced by an incident laser light could work mainly on the readout mechanism in the LS-Super-RENS. Additionally, a super resolutional readout was also observed on the optical disk with different materials and structures, even though there was no metal particles. This meant that the optical near-field and localized plasmon were not contributed to the main readout mechanism. We proposed a new super resolutional readout mechanism based on Gaussian distribution of an incident laser light intensity, heat accumulation in a bubble pit shape, and thermoreflectance phenomena.
2004-10-01