Lasing in optically induced gap states in photonic graphene
Marijana Milićević, Olivier Bleu, Dmitry D. Solnyshkov, Isabelle Sagnes, Aristide Lemaître, Luc Le Gratiet, Abdelmounaim Harouri, Jacqueline Bloch, Guillaume Malpuech, Alberto Amo
SciPost Phys. 5, 064 (2018) · published 19 December 2018
We report polariton lasing in localised gap states in a honeycomb lattice of coupled micropillars. Localisation of the modes is induced by the optical potential created by the excitation beam, requiring no additional engineering of the otherwise homogeneous polariton lattice. The spatial shape of the gap states arises from the interplay of the orbital angular momentum eigenmodes of the cylindrical potential created by the excitation beam and the hexagonal symmetry of the underlying lattice. Our results provide insights into the engineering of defect states in two-dimensional lattices.
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- 1 2 Marijana Milićević,
- 3 Olivier Bleu,
- 3 Dmitry Solnyshkov,
- 1 2 Isabelle Sagnes,
- 1 2 Aristide Lemaître,
- 1 2 Loic Le Gratiet,
- 1 2 Abdelmounaim Harouri,
- 1 2 Jacqueline Bloch,
- 3 Guillaume Malpuech,
- 4 Alberto Amo
- 1 Université Paris-Sud / University of Paris-Sud
- 2 Université Paris-Saclay / University of Paris-Saclay
- 3 Université Clermont Auvergne / University of Clermont Auvergne
- 4 Laboratoire de Physique des Lasers, Atomes et Molécules [PhLAM]