Title :
Room-temperature exciton lasing in ultrathin film of coupled nanocrystals
Author :
Appavoo, Kannatassen ; Xiaoze Liu ; Menon, Vinod ; Sfeir, Matthew Y.
Author_Institution :
Center for Functional Nanomater., Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
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.
Keywords :
excitons; high-speed optical techniques; nanophotonics; nanostructured materials; optical films; absorption spectroscopy; complex spectrotemporal dynamics; coupled nanocrystals ultrathin film; excitonic-to-electron-hole plasma lasing; femtosecond broadband emission; room-temperature exciton lasing; temperature 293 K to 298 K; Annealing; Excitons; Films; II-VI semiconductor materials; Lasers; Scattering; Zinc oxide;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
