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Gain Spectroscopy of Solution‐Based Semiconductor Nanocrystals in Tunable Optical Microcavities
Author(s) -
Patel Robin K.,
Trichet Aurélien A. P.,
Coles David M.,
Dolan Philip R.,
Fairclough Simon M.,
Leontiadou Marina A.,
Tsang S. C. Edman,
Binks David J.,
Jang Eunjoo,
Jang Hyosook,
Taylor Robert A.,
Smith Jason M.
Publication year - 2016
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201500363
Subject(s) - lasing threshold , materials science , optoelectronics , quantum dot , quantum dot laser , laser , semiconductor , spectroscopy , active laser medium , semiconductor laser theory , nanocrystal , optical microcavity , amplified spontaneous emission , optics , wavelength , optical amplifier , nanotechnology , laser power scaling , physics , quantum mechanics
The lasing behavior of solution‐based colloidal quantum dots within an open microcavity is reported. The small size and wide tunability of the cavity provide single mode lasing over a wavelength range in excess of 25 nm. By extracting the lasing threshold and differential gain for the fundamental cavity mode over this spectral range, gain spectroscopy of the quantum dot solution is demonstrated. This new approach could help in the optimization of laser gain media and provides a way of constructing miniature laser arrays for on‐chip integration.