Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/132433
Title: | Probing the Spontaneous Emission Dynamics in Si-Nanocrystals-Based Microdisk Resonators |
Author: | Pitanti, Alessandro Ghulinyan, M. Navarro Urrios, Daniel Pucker, G. Pavesi, Lorenzo |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 9-Mar-2010 |
Publisher: | American Physical Society |
Abstract: | As a possible cavity quantum electrodynamical system, unlike III-V quantum dots, Si-NCs are not considered ideal emitters for emission rate enhancement observations (Purcell effect). Here, we report on direct measurements of spontaneous emission rate enhancement of Si-NCs embedded in a whispering-gallery mode resonator at room temperature. Using time-resolved microphotoluminescence experiments, we demonstrate important lifetime reductions ( ∼ 70 % ) for Si-NCs coupled to cavity modes with respect to uncoupled ones. Comparing experiments with the theoretical Purcell enhancement in a bad emitter regime, we estimate effective linewidths of ∼ 10 meV through which Si-NC emitters are coupled to cavity photons. Finally, our study provides an alternative method for the estimation of subnatural linewidths of quantum dots at room temperature. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.104.103901 |
It is part of: | Physical Review Letters, 2010, vol. 104, num. 10, p. 103901 |
URI: | http://hdl.handle.net/2445/132433 |
Related resource: | https://doi.org/10.1103/PhysRevLett.104.103901 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB)) |
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