Large-scale few-layered MoS2 as a saturable absorber for Q-switching operation at 2.3â
µm.
Opt Lett
; 47(13): 3271-3274, 2022 Jul 01.
Article
em En
| MEDLINE
| ID: mdl-35776603
ABSTRACT
In this Letter, the fabrication of large-scale (50.8 mm in diameter) few-layered MoS2 with physical vapor deposition on sapphire is described. Open-aperture Z-scan technology with a home-made excitation source at 2275â
nm was applied to explore its nonlinear saturable absorption properties. The as-grown few-layered MoS2 membrane possessed a modulation depth of 17% and a saturable intensity of 1.185 MW cm-2. As a consequence, the deposited MoS2 membrane was exploited as a saturable absorber to realize a passively Q-switched TmYAP laser for the first time, to the best of our knowledge. Pulses as short as 316â
ns were generated with a repetition rate of 228 kHz, corresponding to a peak power of 5.53 W. Results confirmed that the two-dimensional layered MoS2 could be beneficial for mid-infrared photonic applications.
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01-internacional
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MEDLINE
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En
Ano de publicação:
2022
Tipo de documento:
Article