title: All-color plasmonic nanolasers with ultralow thresholds: autotuning mechanism for single-mode lasing.
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.
authors.affiliation: Department of Physics, National Tsing-Hua University , Hsinchu 30013, Taiwan.
authors.forename: Yu-Jung
authors.initials: YJ
authors.lastname: Lu
authors.forename: Chun-Yuan
authors.initials: CY
authors.lastname: Wang
authors.forename: Jisun
authors.initials: J
authors.lastname: Kim
authors.forename: Hung-Ying
authors.initials: HY
authors.lastname: Chen
authors.forename: Ming-Yen
authors.initials: MY
authors.lastname: Lu
authors.forename: Yen-Chun
authors.initials: YC
authors.lastname: Chen
authors.forename: Wen-Hao
authors.initials: WH
authors.lastname: Chang
authors.forename: Lih-Juann
authors.initials: LJ
authors.lastname: Chen
authors.forename: Mark I
authors.initials: MI
authors.lastname: Stockman
authors.forename: Chih-Kang
authors.initials: CK
authors.lastname: Shih
authors.forename: Shangjr
authors.initials: S
authors.lastname: Gwo