Ultrastrong Mode Confinement in ZnO Surface Plasmon Nanolasers
| Autor: | Chih Kai Chiang, Hao-Chung Kuo, Tien-Chang Lu, Chien-Chung Lin, Yu Hsun Chou, Heng Li, Chun Ting Yang, Tzy-Rong Lin, Shing-Chung Wang, Bo-Tsun Chou, Ying-Yu Lai |
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| Rok vydání: | 2015 |
| Předmět: |
Mode volume
Materials science business.industry Lasers Exciton Nanolaser Surface plasmon Temperature General Engineering Nanowire General Physics and Astronomy medicine.disease_cause Optics medicine Nanotechnology Optoelectronics Group velocity General Materials Science Light emission Zinc Oxide business Ultraviolet |
| Zdroj: | ACS Nano. 9:3978-3983 |
| ISSN: | 1936-086X 1936-0851 |
| DOI: | 10.1021/acsnano.5b01643 |
| Popis: | Nanolasers with an ultracompact footprint can provide high-intensity coherent light, which can be potentially applied to high-capacity signal processing, biosensing, and subwavelength imaging. Among various nanolasers, those with cavities surrounded by metals have been shown to have superior light emission properties because of the surface plasmon effect that provides enhanced field confinement capability and enables exotic light-matter interaction. In this study, we demonstrated a robust ultraviolet ZnO nanolaser that can operate at room temperature by using silver to dramatically shrink the mode volume. The nanolaser shows several distinct features including an extremely small mode volume, a large Purcell factor, and a slow group velocity, which ensures strong interaction with the exciton in the nanowire. |
| Databáze: | OpenAIRE |
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