Passively Mode-Locked Solid-State Laser with Absorption Tunable Graphene Saturable Absorber Mirror

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2019-07-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
2927-2931
Series
Journal of Lightwave Technology, Volume 37, issue 13
Abstract
Two-dimensional layered materials have attracted huge interest in the generation of ultrafast laser for their excellent saturable absorption properties. However, it is still challenging to precisely control their saturable absorption properties. Here, by alternatively changing the electric field intensity on the surface of high-reflection mirror, we successfully control the nonlinear absorption properties (e.g., saturable fluence, modulation depth) of graphene-based saturable absorber mirrors (GSAM) at the optical telecommunication wavelength of 1.3 mu m and their applications in solid-state lasers for the first time. Modulation depth of 1.2% is obtained from a GSAM with deposition of a lambda/8 ( = 1.3 mu m) thick SiO2 layer between the monolayer graphene and a high-reflection mirror, while modulation depth is increased to 4.3% with a lambda/4 thick SiO2 layer insertion in another GSAM. Pulses with the duration of 20 ps (lambda/8 thick SiO2 insertion) and 7.4 ps (lambda/4 thick SiO2 insertion) are achieved, respectively, based on the two mirrors. Our results indicate that this method is easy and reliable to versatility modulate the saturable absorption properties of other two-dimensional layered materials beyond graphene for the generation of ultrafast solid-state lasers.
Description
| openaire: EC/H2020/820423/EU//S2QUIP
Keywords
Graphene saturable absorber, mode-locked lasers
Other note
Citation
Wang, Y, Zhang, B, Yang, H, Hou, J, Su, X, Sun, Z & He, J 2019, ' Passively Mode-Locked Solid-State Laser with Absorption Tunable Graphene Saturable Absorber Mirror ', Journal of Lightwave Technology, vol. 37, no. 13, 8674562, pp. 2927-2931 . https://doi.org/10.1109/JLT.2019.2907654