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http://hdl.handle.net/2445/126159
Title: | Far-field characterization of the thermal dynamics in lasing microspheres |
Author: | Ramírez Ramírez, Joan Manel Navarro Urrios, Daniel Capuj, Néstor E. Berencén Ramírez, Yonder Antonio Pitanti, Alessandro Garrido Fernández, Blas Tredicucci, Alessandro |
Keywords: | Transmissió de la calor Mesuraments òptics Transmission of heat Optical measurements |
Issue Date: | 23-Jul-2015 |
Publisher: | Nature Publishing Group |
Abstract: | This work reports the dynamical thermal behavior of lasing microspheres placed on a dielectric substrate while they are homogeneously heated-up by the top-pump laser used to excite the active medium. The lasing modes are collected in the far-field and their temporal spectral traces show characteristic lifetimes of about 2 ms. The latter values scale with the microsphere radius and are independent of the pump power in the studied range. Finite-Element Method simulations reproduce the experimental results, revealing that thermal dynamics is dominated by heat dissipated towards the substrate through the medium surrounding the contact point. The characteristic system scale regarding thermal transport is of few hundreds of nanometers, thus enabling an effective toy model for investigating heat conduction in non-continuum gaseous media and near-field radiative energy transfer. |
Note: | Reproducció del document publicat a: https://doi.org/10.1038/srep14452 |
It is part of: | Scientific Reports, 2015, vol. 5, p. 14452 |
URI: | http://hdl.handle.net/2445/126159 |
Related resource: | https://doi.org/10.1038/srep14452 |
ISSN: | 2045-2322 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Publicacions de projectes de recerca finançats per la UE |
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