Unconventional collective normal-mode coupling in quantum-dot-based bimodal microlasers

M. Khanbekyan; H. A. M. Leymann; C. Hopfmann; A. Foerster; C. Schneider; S. Höfling; M. Kamp; J. Wiersig; S. Reitzenstein

doi:10.1103/PhysRevA.91.043840

Unconventional collective normal-mode coupling in quantum-dot-based bimodal microlasers

M. Khanbekyan, H. A. M. Leymann, C. Hopfmann, A. Foerster, C. Schneider, S. Höfling, M. Kamp, J. Wiersig, S. Reitzenstein

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Abstract

We analyze the occurrence of normal-mode coupling (NMC) in bimodal lasers attributed to the collective interaction of the cavity field with a mesoscopic number of quantum dots (QDs). In contrast to the conventional NMC, here we observe locking of the frequencies and splitting of the linewidths of the system's eigenmodes in the coherent coupling regime. The theoretical analysis of the incoherent regime is supported by experimental observations where the emission spectrum of one of the orthogonally polarized modes of a bimodal QD micropillar laser demonstrates a distinct two-peak structure.

Original language	English
Article number	043840
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review. A, Atomic, molecular, and optical physics
Volume	91
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.91.043840
Publication status	Published - 28 Apr 2015

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Hoefling_2015_PRA_Unconventional_Final_Pub_Version
©2015 American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at https://dx.doi.org/10.1103/PhysRevA.91.043840 .
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abstract = "We analyze the occurrence of normal-mode coupling (NMC) in bimodal lasers attributed to the collective interaction of the cavity field with a mesoscopic number of quantum dots (QDs). In contrast to the conventional NMC, here we observe locking of the frequencies and splitting of the linewidths of the system's eigenmodes in the coherent coupling regime. The theoretical analysis of the incoherent regime is supported by experimental observations where the emission spectrum of one of the orthogonally polarized modes of a bimodal QD micropillar laser demonstrates a distinct two-peak structure.",

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AU - Khanbekyan, M.

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AU - Schneider, C.

AU - Höfling, S.

AU - Kamp, M.

AU - Wiersig, J.

AU - Reitzenstein, S.

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Unconventional collective normal-mode coupling in quantum-dot-based bimodal microlasers

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