Two-dimensional material-based saturable absorbers: towards compact visible-wavelength all-fiber pulsed lasers
Loading...
Access rights
openAccess
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Date
2016
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
7
1066-1072
1066-1072
Series
Nanoscale, Volume 8, issue 2
Abstract
Passive Q-switching or mode-locking by placing a saturable absorber inside the laser cavity is one of the most effective and popular techniques for pulse generation. However, most of the current saturable absorbers cannot work well in the visible spectral region, which seriously impedes the progress of passively Q-switched/mode-locked visible pulsed fibre lasers. Here, we report a kind of visible saturable absorber-two-dimensional transition-metal dichalcogenides (TMDs, e.g. WS2, MoS2, MoSe2), and successfully demonstrate compact red-light Q-switched praseodymium (Pr3+)-doped all-fibre lasers. The passive Q-switching operation at 635 nm generates stable laser pulses with similar to 200 ns pulse duration, 28.7 nJ pulse energy and repetition rate from 232 to 512 kHz. This achievement is attributed to the ultrafast saturable absorption of these layered TMDs in the visible region, as well as the compact and all-fibre laser-cavity design by coating a dielectric mirror on the fibre end facet. This work may open a new route for next-generation high-performance pulsed laser sources in the visible (even ultraviolet) range.Description
Keywords
SUPERCONTINUUM GENERATION, TOPOLOGICAL INSULATOR, GRAPHENE, ULTRAFAST, NANOTUBE, LAYER, NANOSHEETS, PHOTONICS, CRYSTALS
Other note
Citation
Luo, Z, Wu, D, Xu, B, Xu, H, Cai, Z, Peng, J, Weng, J, Xu, S, Zhu, C, Wang, F, Sun, Z & Zhang, H 2016, ' Two-dimensional material-based saturable absorbers : towards compact visible-wavelength all-fiber pulsed lasers ', Nanoscale, vol. 8, no. 2, pp. 1066-1072 . https://doi.org/10.1039/c5nr06981e