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Title: | 可拉伸超穎奈米粒子隨機雷射 Stretchable Random Laser Based on Hyperbolic Meta-Nanoparticles |
Authors: | Yao-Hsuan Li 李曜亘 |
Advisor: | 陳永芳 |
Keyword: | 超穎奈米粒子,侷域性表面電漿共振,隨機雷射,高發光強度,低雷射閥值,可拉伸, hyperbolic meta-nanoparticle,localized surface plasmon resonance,random laser,high emission intensity,low lasing threshold,stretchable., |
Publication Year : | 2019 |
Degree: | 碩士 |
Abstract: | 人們可藉由金屬奈米粒子所提供的侷域性表面電漿子以增強發光體的發光。不同於一般的金屬奈米粒子,超穎奈米粒子藉由其特殊的金屬/介電質多層結構創造出更強且更持久的侷域性表面電漿共振,而且透過超穎奈米粒子的零維特性,以及隨機雷射的任意分布的奈米結構,可以創造出一個可拉伸、高效能的雷射裝置。在此實驗中,我們展示了一個可拉伸的超穎奈米粒子隨機雷射,並且藉由和一般的金屬奈米粒子的比較,確認超穎奈米子可以形成高發光強度、低閥值的可拉伸式雷射。此外我們透過三維時域有限差分法去模擬、分析超穎奈米粒子的光學特性。這個結果對於可拉伸的高效能雷射是個重大的進展。 Plasmonic nanoparticles have emerged with the ability to enhance the emission intensity of emitters via localized surface plasmon resonance (LSPR). Unlike traditional plasmonic nanoparticles, nanoparticles with hyperbolic metal/dielectric multishell coating called hyperbolic meta-nanoparticles show more powerful and more lasting LSPR. Based on the integration of the zero dimensional meta-nanoparticles and light emitting semiconductor quantum dots (QDs), deposited on a ripple substrate, in this study, we demonstrate a stretchable and high efficiency cavity free laser device. The unique feature of strongly localized surface plasmon provides a drastically enhanced emission arising from semiconductor QDs and serve as excellent scattering centers for the formation of coherent closed loops. Compared the device with conventionally metallic nanoparticles, we confirm that meta-nanoparticles can support a stable lasing performance with higher intensity and lower threshold. To further analysis the LSPR response of hyperbolic meta-nanoparticles, three dimensional finite-difference time-domain (FDTD) simulation has been performed. Our result shows a major advance for the further development of stretchable high-performance optoelectronic devices. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/72739 |
DOI: | 10.6342/NTU201902063 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 應用物理研究所 |
Files in This Item:
File | Size | Format | |
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ntu-108-1.pdf Restricted Access | 6.23 MB | Adobe PDF |
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