期刊
OPTICS AND LASER TECHNOLOGY
卷 142, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2021.107199
关键词
Niobium carbide MXene; Z-scan; Saturable absorber; Nonlinear optics; Solid-state lasers
资金
- National Natural Science Foundation of China [12004208, 62005177]
- Qilu University of Technology (Shandong Academy of Sciences) International Cooperation Project of science, Education and Industry Integration and Innovation Pilot [2020KJC-GH12]
- Foundation and Applied Foundation Research Fund of Guangdong Province [2019A1515111060]
- Postdoctoral Research Foundation of China [2020 M672786]
The study focused on the optical modulation application of synthesized Nb2C nanosheets, achieving passively Q-switched solid-state lasers from visible to near-infrared range. The results showed excellent absorption properties and laser effects of Nb2C nanosheets, suggesting potential for further applications in 2D optoelectronic materials.
Recently, niobium-carbide (Nb2C) nanosheets, a member of MXene family, have gained significant attention because of their unique physical and chemical properties. Here, the few-layer Nb2C nanosheets were synthesized by a combination of selective etching and liquid cascade centrifugation. The broadband absorption properties of the few-layer Nb2C nanosheets were systematically investigated by the open-aperture Z-scan technique. The results indicate the excellent saturable absorption responses of Nb2C nanosheets, revealing the promising optical modulate application of Nb2C in solid-state lasers. Using the Nb2C saturable absorber (SA), passively Q-switched solid-state lasers from visible to near-infrared range were realized, which presented a promising alternative for a broadband optical modulator. Furthermore, a passively mode-locked laser at 1.06 mu m was successfully achieved based on the Nb2C SA. A pulse duration of 13.5 ps was produced with the maximum average output power of 426 mW and a repetition rate of 99.1 MHz. To the best of our knowledge, this is the first time to use Nb2C nanosheets as a broadband SA for the solid-state lasers. The results may promote further applications of 2D optoelectronic materials from visible to near-infrared range.
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