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arXiv · 0910.5000

Observation of a stronger-than-adiabatic change of light trapped in an ultrafast switched GaAs-AlAs microcavity

Philip J. Harding·Huib J. Bakker·Alex Hartsuiker·Julien Claudon·Allard P. Mosk·Jean-Michel Gerard·Willem L. Vos
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Abstract

We study the time-resolved reflectivity spectrum of a switched planar GaAs-AlAs microcavity. Between 5 and 40 ps after the switching (pump) pulse we observe a strong excess probe reflectivity and a change of the frequency of light trapped in the cavity up to 5 linewidths away from the cavity resonance. This frequency change does not adiabatically follow the fast-changing cavity resonance. The frequency change is attributed to an accumulated phase change due to the time-dependent refractive index. An analytical model predicts dynamics in qualitative agreement with the experiments, and points to crucial parameters that control future applications.

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Philip J. Harding, Huib J. Bakker, Alex Hartsuiker, Julien Claudon, Allard P. Mosk, Jean-Michel Gerard, Willem L. Vos. 2009-10-26. Observation of a stronger-than-adiabatic change of light trapped in an ultrafast switched GaAs-AlAs microcavity. https://doi.org/10.1364/josab.29.0000a1

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