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Passively Q-switched laser with specific chiral SWCNTs selected by N-CS as saturable absorber at 1μm
Optics Communications ( IF 1.961 ) Pub Date : 2020-01-15 , DOI: 10.1016/j.optcom.2020.125315
Xiaodong Zhang; Hongwei Chu; Ying Li; Yan Zhang; Shengzhi Zhao; Dechun Li

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.
更新日期:2020-01-15

 

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