期刊
NANOSCALE
卷 10, 期 43, 页码 20171-20177出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr03859g
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资金
- National Natural Science Foundation of China (NSFC) [61575110, 61675116, 51321091]
- Major Research and Development Program for Public Welfare in Shandong [2017GGX20134]
- Young Scholars Program of Shandong University [2017WLJH48]
1T-titanium selenide (1T-TiSe2), a representative of 1T phase transition metal dichalcogenides (TMDs), exhibits semimetallic behaviour with a nearly zero bandgap structure, which makes it a promising photoelectric material. A high-quality multilayer 1T-TiSe2 saturable absorber (SA) is successfully fabricated by a combination of liquid phase exfoliation and the spin coating method. The broadband nonlinear saturable absorption properties of the prepared 1T-TiSe2 SA are investigated by using the open aperture (OA) Z-scan method. Passively Q-switched (PQS) all-solid-state lasers with different bulk crystals at the wavelengths of 1.0, 1.3, 2.0 and 2.8 mu m are realised based on the 1T-TiSe2 SA. To the best of our knowledge, this is the first presentation of the application of a 1T-TiSe2 material to all-solid-state bulk lasers. The results indicate that 1T-TiSe2 could be an alternative broadband SA for solid-state pulsed lasers and exhibits promising potential applications in mode-locked ultrafast lasers.
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