All-Color Plasmonic Nanolasers with Ultralow Thresholds: Autotuning Mechanism for Single-Mode Lasing
Nano Letters2014Vol. 14(8), pp. 4381–4388
Citations Over TimeTop 1% of 2014 papers
Yu‐Jung Lu, Chun-Yuan Wang, Jisun Kim, Hung-Ying Chen, Ming‐Yen Lu, Yen-Chun Chen, Wen‐Hao Chang, Lih‐Juann Chen, Mark I. Stockman, Chih‐Kang Shih, Shangjr Gwo
Abstract
We report on the first demonstration of broadband tunable, single-mode plasmonic nanolasers (spasers) emitting in the full visible spectrum. These nanolasers are based on a single metal-oxide-semiconductor nanostructure platform comprising of InGaN/GaN semiconductor nanorods supported on an Al2O3-capped epitaxial Ag film. In particular, all-color lasing in subdiffraction plasmonic resonators is achieved via a novel mechanism based on a property of weak size dependence inherent in spasers. Moreover, we have successfully reduced the continuous-wave (CW) lasing thresholds to ultrasmall values for all three primary colors and have clearly demonstrated the possibility of "thresholdless" lasing for the blue plasmonic nanolaser.
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