Polariton lasing and energy-degenerate parametric scattering in non-resonantly driven coupled planar microcavities

Nanophotonics

article

Krzysztof Sawicki¹  Andrzej Golnik¹  Wojciech Pacuski¹  Jan Suffczyński¹  Thomas J. Sturges²  Maciej Ściesiek¹  Tomasz Kazimierczuk¹  Kamil Sobczak³ 

[1] Institute of Experimental Physics, Faculty of Physics, University of Warsaw;Institute of Theoretical Physics, Faculty of Physics, University of Warsaw;Biological and Chemical Research Centre, University of Warsaw

关键词: Bose–Einstein condensation;    coupled microcavities;    exciton-polariton;    parametric scattering;    polariton lasing;   

DOI  :  10.1515/nanoph-2021-0079

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Multi-level exciton-polariton systems offer an attractive platform for studies of non-linear optical phenomena. However, studies of such consequential non-linear phenomena as polariton condensation and lasing in planar microcavities have so far been limited to two-level systems, where the condensation takes place in the lowest attainable state. Here, we report non-equilibrium Bose–Einstein condensation of exciton-polaritons and low threshold, dual-wavelength polariton lasing in vertically coupled, double planar microcavities. Moreover, we find that the presence of the non-resonantly driven condensate triggers interbranch exciton-polariton transfer in the form of energy-degenerate parametric scattering. Such an effect has so far been observed only under excitation that is strictly resonant in terms of the energy and incidence angle. We describe theoretically our time-integrated and time-resolved photoluminescence investigations by an open-dissipative Gross–Pitaevskii equation-based model. Our platform’s inherent tunability is promising for construction of planar lattices, enabling three-dimensional polariton hopping and realization of photonic devices, such as all-optical polariton-based logic gates.

【 授权许可】

CC BY