Gold substrate-induced single-mode lasing of GaN nanowires
作者： Huiwen Xu , Jeremy B. Wright , Antonio Hurtado , Qiming Li , Ting-Shan Luk
DOI: 10.1063/1.4768300
关键词: Single-mode optical fiber 、 Semiconductor laser theory 、 Wide-bandgap semiconductor 、 Solid-state lighting 、 Lasing threshold 、 Laser 、 Nanowire 、 Materials science 、 Substrate (electronics) 、 Nanotechnology 、 Optoelectronics
摘要: We demonstrate a method for mode-selection by coupling GaN nanowire laser to an underlying gold substrate. Multimode lasing of nanowires is converted single-mode behavior following placement onto film. A mode-dependent loss generated the absorbing substrate suppress multiple transverse-mode operation with concomitant increase in threshold only ∼13%. This provides greater flexibility realizing practical lasers and offers insight into design metal-contacted nanoscale optoelectronics.
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