Frequency-Upconversion Single-Mode Lasing in CsPbBr<sub>3</sub> Nanowires at Room Temperature
Frequency upconversion provides a feasible strategy for switching the resonant wavelength of lasing modes. However, this nonlinear process requires extremely high optical properties for the medium. Here, the high-quality CsPbBr<sub>3</sub> nanowires were prepared by using the antisolvent method, which can serve as both the optical gain medium and resonant cavity. The highly polarized single-photon lasing was achieved with a low threshold of 6.69 μJ/cm<sup>2</sup>, excited by a 390 nm femtosecond pulse laser. Furthermore, frequency-upconversion single-mode lasing output was successfully operated at room temperature in a single CsPbBr<sub>3</sub> nanowire with a length of 3.5 μm under pumping of an 800 nm femtosecond pulse laser. These findings suggest that the prepared all-inorganic perovskite nanowires can be used as excellent optical gain media for frequency-upconversion lasers, providing a versatile platform for constructing nonlinear optoelectronic devices, such as optical switches, optical limiters, and biomedical imaging.
Authors
- Junfeng Lu (ORCID: https://orcid.org/0000-0001-6458-7734)
- Caofeng Pan (ORCID: https://orcid.org/0000-0001-6327-9692)
- Caixia Kan (ORCID: https://orcid.org/0000-0003-3722-422X)
- Tingcha Wei (ORCID: https://orcid.org/0000-0001-7619-4313)
- Long Yuan (ORCID: https://orcid.org/0009-0002-4298-1655)
- Zhi Zhang (ORCID: https://orcid.org/0000-0002-1496-7293)
- Xiaoxuan Wang (ORCID: https://orcid.org/0000-0001-7028-0667)
- Daning Shi
- Changshun Wang
- Chunxiang Xu
- Feifei Qin (ORCID: https://orcid.org/0000-0002-3947-7709)
- Wenjie Deng (ORCID: https://orcid.org/0000-0002-5615-0353)
- Yanda Ji
Institutions
- South China Normal University (CN)
- Nanjing University of Posts and Telecommunications (CN)
- Institutul de Fizică Atomică (RO)
- Institute of Atomic Energy (PL)
- BioElectronics (United States) (US)
- State Key Laboratory of Digital Medical Engineering (CN)
- Southeast University (CN)
- Beihang University (CN)
- Ministry of Industry and Information Technology (CN)
- Nanjing University of Aeronautics and Astronautics (CN)
Publication Details
- Journal
- ACS Nano
- Published
- 2025-08-09
- DOI
- https://doi.org/10.1021/acsnano.5c08513
- Citations
- 2
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.46
Funders
- National Natural Science Foundation of China
- Nanjing University of Aeronautics and Astronautics
- Natural Science Foundation of Jiangsu Province
- Fundamental Research Funds for the Central Universities