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- Title
Quantum Fluctuations and Lineshape Anomaly in a High-β Silver-Coated InP-Based Metallic Nanolaser.
- Authors
Koulas-Simos, Aris; Buchgeister, Joel; Drechsler, Monty L.; Taiping Zhang; Laiho, Kaisa; Sinatkas, Georgios; Jialu Xu; Lohof, Frederik; Qiang Kan; Zhang, Ruikang K.; Jahnke, Frank; Gies, Christopher; Chow, Weng W.; Cun-Zheng Ning; Reitzenstein, Stephan
- Abstract
Metallic nanocavity lasers provide important technological advancement toward even smaller integrable light sources. They give access to widely unexplored lasing physics in which the distinction between different operational regimes, like those of thermal or coherent light emission, becomes increasingly challenging upon approaching a device with a near-perfect spontaneous-emission coupling factor β. In fact, quantum-optical studies have to be employed to reveal a transition to coherent emission in the intensity fluctuation behavior of nanolasers when the input–output characteristic appears thresholdless for β= 1 nanolasers. Here, a new indicator for lasing operation in high-β lasers is identified by showing that stimulated emission can give rise to a lineshape anomaly manifested as a transition from a Lorentzian to a Gaussian component in the emission linewidth that dominates the spectrum above the lasing threshold.
- Subjects
QUANTUM fluctuations; LIGHT sources; COHERENCE (Optics); STIMULATED emission; TECHNOLOGICAL innovations
- Publication
Laser & Photonics Reviews, 2022, Vol 16, Issue 9, p1
- ISSN
1863-8880
- Publication type
Article
- DOI
10.1002/lpor.202200086