title: Thermo-optical dynamics in an optically pumped Photonic Crystal nano-cavity.
abstract: 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.
authors.affiliation: Laboratoire de Photonique et de Nanostructures (CNRS UPR20), Route de Nozay, 91460 Marcoussis, France.
authors.forename: M
authors.initials: M
authors.lastname: Brunstein
authors.forename: R
authors.initials: R
authors.lastname: Braive
authors.forename: R
authors.initials: R
authors.lastname: Hostein
authors.forename: A
authors.initials: A
authors.lastname: Beveratos
authors.forename: I
authors.initials: I
authors.lastname: Rober-Philip
authors.forename: I
authors.initials: I
authors.lastname: Sagnes
authors.forename: T J
authors.initials: TJ
authors.lastname: Karle
authors.forename: A M
authors.initials: AM
authors.lastname: Yacomotti
authors.forename: J A
authors.initials: JA
authors.lastname: Levenson
authors.forename: V
authors.initials: V
authors.lastname: Moreau
authors.forename: G
authors.initials: G
authors.lastname: Tessier
authors.forename: Y
authors.initials: Y
authors.lastname: De Wilde