All-color plasmonic nanolasers with ultralow thresholds: Autotuning mechanism for single-mode lasing

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

153 Scopus citations

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 Al 2O3-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.

Original languageEnglish
Pages (from-to)4381-4388
Number of pages8
JournalNano Letters
Volume14
Issue number8
DOIs
StatePublished - 13 Aug 2014

Keywords

  • all-color lasing
  • autotuning mechanism
  • plasmonic nanolaser
  • Semiconductor nanolaser
  • spaser
  • thresholdless lasing

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