Regensburg 2022 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 4: Semiconductor Lasers
HL 4.9: Vortrag
Montag, 5. September 2022, 12:00–12:15, H33
Quantum-optical study of an InGaAsP metallic cavity nanolaser: A systematic approach to the identification of lasing — •J. Buchgeister1, M. L. Drechsler1, F. Lohof1, C. Gies1, A. Koulas-Simos2, K. Laiho2, G. Sinatkas2, T. Zhang4, J. Xu4, Q. Kan6, R. K. Zhang6, C.-Z. Ning4,5, S. Reitzenstein2, W. W. Chow3, and F. Jahnke1 — 1Universität Bremen, Germany — 2Technische Universität Berlin, Germany — 3Sandia National Laboratories, USA — 4Tsinghua University, China — 5Arizona State University, USA — 6Institute of Semiconductors, China
Semiconductor nanolasers as small-scale sources of coherent light have become increasingly important for applications in the data industry for their size, power-efficiency, and modulation speed. Determining the presence of lasing, however, is challenging due to the near-thresholdless behaviour of ultra-efficient devices, which requires going beyond I/O characteristics. The research presented here focuses on a quantum-optical study of a silver-coated InGaAsP nanolaser by means of a full quantum-mechanical semiconductor laser theory. We calculate the time-resolved single- and two-photon correlation function, allowing us to identify the onset of coherent emission with confidence. Our theoretical model can match the experimentally obtained data using a single set of realistic parameters and hence presents a comprehensive strategy for the identification of lasing while being extensible to those gain materials requiring a more pronounced focus on quantum-material aspects, like TMDCs.