Enhanced saturable absorption in the laser-treated free-standing carbon nanotube films

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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-10-01
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Language
en
Pages
4
5377-5380
Series
Optics Letters, Volume 45, issue 19
Abstract
We demonstrate an increase of optical transmittance and saturable absorption of laser-treated free-standing single-walled carbon nanotube (SWNT) films. The combined acid and low-power non-destructive laser treatment ensures an enhancement of linear transmittance across the visible range and double-digit increase of the saturable absorption of femtosecond laser radiation at 795 nm. The saturable absorption coefficient and the ratio of saturable to non-saturable losses increase by 26% and 35%, correspondingly, while the saturation intensity decreases by 20% because of the treatment. Our analysis indicates that with the performed treatment one can significantly improve the nonlinear optical properties of free-standing SWNT-based ultrafast saturable absorbers.
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Vanyukov , V V , Mikheev , K G , Nasibulin , A G , Svirko , Y & Mikheev , G M 2020 , ' Enhanced saturable absorption in the laser-treated free-standing carbon nanotube films ' , Optics Letters , vol. 45 , no. 19 , pp. 5377-5380 . https://doi.org/10.1364/OL.399852