Strauf, S., Hennessy, K., Rakher, M.T., Choi, Y.-S., Badolato, A. , Andreani, L.C., Hu, E.L., Petroff, P.M. and Bouwmeester, D. (2006) Self-tuned quantum dot gain in photonic crystal lasers. Physical Review Letters, 96(12), 127404. (doi: 10.1103/PhysRevLett.96.127404)
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Abstract
We demonstrate that very few (2–4) quantum dots as a gain medium are sufficient to realize a photonic-crystal laser based on a high-quality nanocavity. Photon correlation measurements show a transition from a thermal to a coherent light state proving that lasing action occurs at ultralow thresholds. Observation of lasing is unexpected since the cavity mode is in general not resonant with the discrete quantum dot states and emission at those frequencies is suppressed. In this situation, the quasicontinuous quantum dot states become crucial since they provide an energy-transfer channel into the lasing mode, effectively leading to a self-tuned resonance for the gain medium.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Badolato, Professor Antonio |
Authors: | Strauf, S., Hennessy, K., Rakher, M.T., Choi, Y.-S., Badolato, A., Andreani, L.C., Hu, E.L., Petroff, P.M., and Bouwmeester, D. |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
Journal Name: | Physical Review Letters |
Publisher: | American Physical Society |
ISSN: | 0031-9007 |
ISSN (Online): | 1079-7114 |
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