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Applied Physics Letters

Resonant coupling of quantum dot intersublevel transitions with midinfrared photonic crystal modes

Estelle Homeyer, Julien Houel, Xavier Checoury, F. Delgehier, S. Sauvage, P. Boucaud, Rémy Braive, Luc Le Gratiet, Laetitia Leroy, Audrey Miard, Aristide Lemaître, Isabelle Sagnes

Published Jul 27, 2009• 7 citations

Abstract

We show that quantum dot intersublevel transitions can be coupled to midinfrared photonic crystal modes. The coupling is observed under optical pumping with S-P intersublevel transitions of InGaAs self-assembled quantum dots resonant around 20 μm wavelength. An enhancement in the intersublevel absorption and a spectral tuning are evidenced when the optical modes of two-dimensional photonic crystals enter in resonance with the photoinduced intersublevel absorption. This effect is illustrated in the case of GaAs two-dimensional photonic crystal membranes with lattice periodicities of 10.5, 9.5, and 8.5 μm containing multilayers of self-assembled quantum dots.

DOI: 10.1063/1.3189812

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