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Turing patterns in semiconductor microcavities : formation and optical control

By Vincenzo Ardizzone, Przemyslaw Lewandowski, Yuen-Chi Tse, Nai-Hang Kwong, Samuel Luk, Andreas Lücke, Marco Abbarchi, Jacqueline Bloch, Elisabeth Galopin, Aristide Lemaitre, P.T. Leung, Philippe Roussignol, Rolf Binder, Jérôme Tignon and Stefan Schumacher


Communication oraleTuring pattern formation in nonlinear systems attracts great interest in fields as varied as biology, chemistry and physics [1,2]. Here, we show that patterns can also be formed in semiconductor microcavities operated in the optical parametric oscillation (OPO) regime [3,4]. The basic process involved is the very efficient polariton-polariton scattering, induced mostly by the Coulomb interaction that induces strong resonant χ (3) nonlinearities [3]. In this context, coupled planar microcavities [4] offer a unique test-bed for studying the formation of patterns. The sample design allows engineering multiple polariton modes that can be tuned at will [4]. The system can be resonantly pumped at normal incidence inducing interbranch energy-degenerate OPO. With respect to other studied patterns (e.g. in hydrodynamics or in conventional OPOs), the originality relies here with: (i) the excitation and emitted beams wave-vectors can be easily accessed and controlled; (ii) the particular role played by the polarization of light and the polariton spin; (iii) the perspective given to use such semiconductor nanostructures to realize fast optical- switches. Here, we demonstrate the formation of hexagonal patterns observed in the OPO far-field emission as well as in the real space. We then prove that these patterns can be optically controlled by changing the pump wave-vector as well as by modifying the polarization of the pump beam. Finally an all-optical switch is demonstrated. 1] M.C. Cross and P. Hohenberg, Rev. Mod. Phys. 65,851 (1993). [2] A. Turing,Phil. Trans.. R. Soc. Lonf. B 237, 37 (1952). [3] P. G. Savvidis, J. J. Baumberg, R. M. Stevenson, M. S. Skolnick, D. M. Whittaker, J. S. Roberts, Phys. Rev. Lett. 84, 1547 (2000). [4] C. Diederichs, J. Tignon, G. Dasbach, C. Ciuti, A. Lemaitre, J. Bloch, Ph. Roussignol, C. Delalande , Nature 410, 904 (2006)

Topics: [ PHYS.COND.CM-GEN ] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]
Publisher: HAL CCSD
Year: 2013
OAI identifier: oai:HAL:hal-00942741v1
Provided by: Hal-Diderot
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