Your browser doesn't support javascript.
loading
Lasing from a Large-Area 2D Material Enabled by a Dual-Resonance Metasurface.
Barth, Isabel; Deckart, Manuel; Conteduca, Donato; Arruda, Guilherme S; Hayran, Zeki; Pasko, Sergej; Krotkus, Simonas; Heuken, Michael; Monticone, Francesco; Krauss, Thomas F; Martins, Emiliano R; Wang, Yue.
Affiliation
  • Barth I; School of Physics, Engineering and Technology, University of York, York YO10 5DD, U.K.
  • Deckart M; School of Physics, Engineering and Technology, University of York, York YO10 5DD, U.K.
  • Conteduca D; School of Physics, Engineering and Technology, University of York, York YO10 5DD, U.K.
  • Arruda GS; São Carlos School of Engineering, Department of Electrical and Computer Engineering, University of São Paulo, São, Carlos-SP 13566-590, Brazil.
  • Hayran Z; School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, United States.
  • Pasko S; AIXTRON SE, Dornkaulstraße. 2, Herzogenrath 52134, Germany.
  • Krotkus S; AIXTRON SE, Dornkaulstraße. 2, Herzogenrath 52134, Germany.
  • Heuken M; AIXTRON SE, Dornkaulstraße. 2, Herzogenrath 52134, Germany.
  • Monticone F; School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, United States.
  • Krauss TF; School of Physics, Engineering and Technology, University of York, York YO10 5DD, U.K.
  • Martins ER; São Carlos School of Engineering, Department of Electrical and Computer Engineering, University of São Paulo, São, Carlos-SP 13566-590, Brazil.
  • Wang Y; School of Physics, Engineering and Technology, University of York, York YO10 5DD, U.K.
ACS Nano ; 18(20): 12897-12904, 2024 May 21.
Article in En | MEDLINE | ID: mdl-38710615
ABSTRACT
Semiconducting transition metal dichalcogenides (TMDs) have gained significant attention as a gain medium for nanolasers, owing to their unique ability to be easily placed and stacked on virtually any substrate. However, the atomically thin nature of the active material in existing TMD lasers and the limited size due to mechanical exfoliation presents a challenge, as their limited output power makes it difficult to distinguish between true laser operation and other "laser-like" phenomena. Here, we present room temperature lasing from a large-area tungsten disulfide (WS2) monolayer, grown by a wafer-scale chemical vapor deposition (CVD) technique. The monolayer is placed on a dual-resonance dielectric metasurface with a rectangular lattice designed to enhance both absorption and emission, resulting in an ultralow threshold operation (threshold well below 1 W/cm2). We provide a thorough study of the laser performance, paying special attention to directionality, output power, and spatial coherence. Notably, our lasers demonstrated a coherence length of over 30 µm, which is several times greater than what has been reported for 2D material lasers so far. Our realization of a single-mode laser from a CVD-grown monolayer presents exciting opportunities for integration and the development of real-world applications.
Key words

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: ACS Nano Year: 2024 Type: Article Affiliation country: United kingdom

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: ACS Nano Year: 2024 Type: Article Affiliation country: United kingdom