Journal
OPTICS COMMUNICATIONS
Volume 462, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2020.125315
Keywords
Chirality selection; Nonlinear optical properties; SWCNTs; Q-switching
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Funding
- Natural National Science Foundation of China (NSFC) [61575109, 21872084]
- Fundamental Research Funds of Shandong University, China [2018TB044]
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The single-wall carbon nanotubes (SWCNTs) with the specific chirality (6, 5) and (7, 5) were sorted out by the density gradient ultracentrifugation (DGU) method. 2D photoluminescence excitation-emission map and the Raman spectrum confirmed the successful chirality-selection. The nonlinear optical performance of the chirality-selected SWCNTs was investigated by an open-aperture Z-scan setup. By employing the prepared SWCNTs saturable absorber (SWCNTs-SA), the minimum pulse duration of 115 ns with a pulse repetition rate of 550 kHz was obtained in the passively Q-switched (PQS) laser operation.
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