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

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


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 languageEnglish
Article number043840
Pages (from-to)1-5
Number of pages5
JournalPhysical Review. A, Atomic, molecular, and optical physics
Issue number4
Publication statusPublished - 28 Apr 2015


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