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journal article·2025-04Open access

Electrically‐Switchable Gain in Optically Pumped CsPbBr 3 Lasers With Low Threshold at Nanosecond Pumping

Yang Li, Shangpu Liu, Thomas Feeney, Julie Roger, Mohammad Gholipoor, Hang Hu, Dewei Zhao, Ian Howard, Felix Deschler, Uli Lemmer, Ulrich W. Paetzold

Small· Volume 21· Issue 13
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Source abstract

Abstract

Abstract Metal halide perovskites hold promise for nonepitaxial laser diodes, yet, continuous‐wave (CW) optically pumped (photonic) lasing in CsPbBr 3 remains elusive despite its superior thermal‐ and photo‐stability among the perovskite family. This work reports on CsPbBr 3 vertical cavity surface emitting lasers with low lasing thresholds (1.3 µJ cm − 2 ) at nanosecond pumping and remarkable lasing stability. Furthermore, the electrically switchable gain is achieved in CsPbBr 3 electrically assisted optically pumped laser (EAOPL) devices by leveraging ion migration. Applying a small positive DC voltage to the EAOPL device significantly reduces the lasing threshold under nanosecond laser excitation and enhances the cavity mode intensity at CW laser excitation. These findings present a novel strategy, combining a small DC voltage with an electrical pulse, for exploring electrical injection lasing in CsPbBr 3 perovskites.
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Research context

NanomaterialsElectronic materials

OpenAlex topics: Solid State Laser Technologies · Optical properties and cooling technologies in crystalline materials · Advanced Fiber Laser Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Materials Science and Engineering & Engineering Research Center of Alternative Energy Materials and Devices Ministry of Education Sichuan University Chengdu 610065 China

Institute of Microstructure Technology Karlsruhe Institute of Technology Hermann‐von‐Helmholtz‐Platz 1 76344 Eggenstein‐Leopoldshafen Germany

Light Technology Institute Karlsruhe Institute of Technology Engesserstrasse 13 76131 Karlsruhe Germany

Physikalisch‐Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 229 69120 Heidelberg Germany

Funding

National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities · Deutsche Forschungsgemeinschaft

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