Journal
OPTICS EXPRESS
Volume 17, Issue 19, Pages 17118-17129Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.017118
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Funding
- Region Ile-de-France
- C'Nano IdF is a CNRS
- CEA
- MESR
- Region Ile-de-France Nanosciences Competence Center
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Linear and non-linear thermo-optical dynamical regimes were investigated in a photonic crystal cavity. First, we have measured the thermal relaxation time in an InP-based nano-cavity with quantum dots in the presence of optical pumping. The experimental method presented here allows one to obtain the dynamics of temperature in a nanocavity based on reflectivity measurements of a cw probe beam coupled through an adiabatically tapered fiber. Characteristic times of 1.0+/-0.2 mu s and 0.9+/-0.2 mu s for the heating and the cooling processes were obtained. Finally, thermal dynamics were also investigated in a thermo-optical bistable regime. Switch-on/off times of 2 mu s and 4 mu s respectively were measured, which could be explained in terms of a simple non-linear dynamical representation. (C) 2008 Optical Society of America
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