相變化記錄層與奈米近場光學多層膜結構之光熱反應研究

Study of optical-thermal response for phase-change material and near-field optical multilayer structure

劉宏威(Hung-Wei Liu)

指導教授 ： 蔡定平

國立臺灣大學/理學院/物理研究所/碩士(2005年)

https://doi.org/10.6342/NTU.2005.10057

摘要

本論文主要研究相變化記錄層與奈米近場光學多層膜結構的光熱反應作用，在泵探系統光學實驗架構下利用脈衝雷射來引發材料變化，同時以連續雷射來讀取材料的反射訊號強度變化。藉由分析不同寫入功率、不同寫入時間與不同讀取功率下樣品的反射光學訊號強度的變化曲線及樣品表面光學影像來比較近場光學多層膜與相變化記錄層反應之不同處。以結晶化理論，馬克斯威爾方程式以及熱傳方程式為基礎的理論計算所得之時變反射率做為實驗量測結果的參考。

關鍵字

光熱反應 ； 近場光學多層膜 ； 相變化材料 ； 泵探系統

並列摘要

The goal of this thesis is to study the optical-thermal response of phase-change materials and near-field optical multilayer structures. Pumping laser of a pump-probe optical system is used to trigger the change of sample, and the reflectance of a continuous probing laser beam is used to simultaneously detect the change at the sample. We investigate the difference between multilayer near-field optical thin film structures and phase-change thin film layers by analyzing the reflectance and optical image of samples under different pumping laser powers, pulse durations and probing laser powers. Based on the theory of crystallization, Maxwell equations and thermal diffusion equations are used to calculate time-dependent reflectance as a reference of our experimental results.

並列關鍵字

optical-thermal response ； near-field optical multilayer ； phase-change material ； pump-probe system

參考文獻

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