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30 September 2024 Type-(I+II) quantum dots for widely tunable dye-like lasers
Victor I. Klimov
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Proceedings Volume 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII; 131220A (2024) https://doi.org/10.1117/12.3027091
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States
Abstract
Despite three decades of research, colloidal quantum dot (QD) lasers are still at the stage of exploratory devices rather than a practical technology. A primary complication is nonradiative Auger recombination of gain-active multicarrier states. To overcome this challenge, we introduce type-(I+II) QDs that feature a trion-like optical-gain state with strongly suppressed Auger recombination. Using a single QD sample, we achieve stable lasing tunable 634 nm (red) to 590 nm (orange-yellow). These results point towards the feasibility of technologically viable QD lasers that combine wide dye-laser-like spectral tunability with high operational stability and unparallel diversity of optical characteristics of zero-dimensional semiconductors.
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Victor I. Klimov "Type-(I+II) quantum dots for widely tunable dye-like lasers", Proc. SPIE 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII, 131220A (30 September 2024); https://doi.org/10.1117/12.3027091
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KEYWORDS
Colloidal quantum dots
Tunable lasers
Laser applications
Laser stabilization
Quantum devices
Quantum features
Quantum technologies
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