Thermo-optical dynamics in an optically pumped Photonic Crystal nano-cavity.
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 micros and 0.9+/-0.2 micros 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 micros and 4 micros respectively were measured, which could be explained in terms of a simple non-linear dynamical representation.
Brunstein
M
M
Laboratoire de Photonique et de Nanostructures (CNRS UPR20), Route de Nozay, 91460 Marcoussis, France.
Braive
R
R
Hostein
R
R
Beveratos
A
A
Rober-Philip
I
I
Sagnes
I
I
Karle
T J
TJ
Yacomotti
A M
AM
Levenson
J A
JA
Moreau
V
V
Tessier
G
G
De Wilde
Y
Y