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Title: Room-Temperature Exciton Lasing in Ultrathin Film of Coupled Nanocrystals

We demonstrate exciton lasing in sub-wavelength coupled nanostructures at ultralow fluence threshold, as probed by femtosecond broadband emission and absorption spectroscopy. The complex spectrotemporal dynamics reveal for the first time an excitonic-to-electron-hole plasma lasing mechanism.
Authors:
 [1] ;  [1] ;  [1] ;  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
Publication Date:
OSTI Identifier:
1188255
Report Number(s):
BNL--108082-2015-CP
R&D Project: 16063/16058; KC0403020; TRN: US1500252
DOE Contract Number:
SC00112704
Resource Type:
Conference
Resource Relation:
Conference: The Conference on Lasers and Electro-Optics (CLEO: QELS – Fundamental Science), San Jose, CA (United States), 10-15 May 2015
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ZINC OXDES; TEMPERATURE RANGE 0273-0400 K; THIN FILMS; NANOSTRUCTURES; EMISSION SPECTRA; LASERS; EXCITONS; SOLID-STATE PLASMA