Stretchable Random Laser Based on Hyperbolic Meta-Nanoparticles

• Main Authors: Yao-Hsuan Li, 李曜亘
• Other Authors: 陳永芳
• Format: Others
• Language: en_US
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/hgcc98

碩士 === 國立臺灣大學 === 應用物理研究所 === 107 === 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.