Title :
Low threshold lasers from wavelength-engineered colbidal quantum dot enabled by single-exciton optical gain
Author :
Cuong Dang ; Kwangdong Roh ; Joonhee Lee ; Nurmikko, Arto ; Breen, C. ; Steckel, J.S. ; Coe-Sullivan, S.
Author_Institution :
Sch. of Eng., Brown Univ., Providence, RI, USA
Abstract :
Wavelength engineered nanocrystal colloidal quantum dots were used to create a thin solid films. Very low thresholds for light amplification were achieved in these red, green and blue film by a single exciton gain mechanism which also enables optical gain with quasi-steady pumping source.
Keywords :
amplification; colloids; excitons; laser beams; nanophotonics; nanostructured materials; optical pumping; quantum dot lasers; semiconductor thin films; blue film; green film; light amplification; low threshold lasers; quasisteady pumping source; red film; single-exciton optical gain; thin solid films; wavelength engineered nanocrystal colloidal quantum dots; Cavity resonators; Excitons; Films; Laser excitation; Optical pulse generation; Quantum dot lasers; Vertical cavity surface emitting lasers; RGB lasers; colloidal quantum dot; optical gain; single exciton gain;
Conference_Titel :
Lester Eastman Conference on High Performance Devices (LEC), 2012
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-2298-0
Electronic_ISBN :
978-1-4673-2300-0
DOI :
10.1109/lec.2012.6410994
