Reflective Langmuir-Blodgett Molybdenum Disulfide Saturable Absorber for Q-Switched Nd:GdVO4 Laser

We fabricated a compact reflective molybdenum disulfide (MoS 2 ) saturable absorber (SA) by coating a few layers of a MoS 2 thin film on a silver mirror using the Langmuir-Blodgett (LB) method. The LB method showed to be effective in producing a thin film with smooth surface, low optical scattering,...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 31; no. 5; pp. 333 - 336
Main Authors Wang, Jiang, Wang, Yonggang, Yang, Xiguang, Qu, Yu, Yao, Xi, Liu, Sicong, Chen, Zhendong, Lu, Li, Wang, Taijin
Format Journal Article
LanguageEnglish
Published New York IEEE 01.03.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Absorbers
Cavity resonators
Langmuir-Blodgett films
Langmuir-Blodgett technology
Laser excitation
Laser stability
Lasers
Molybdenum
Molybdenum disulfide
Neodymium lasers
Pulse duration
Pump lasers
Q switched lasers
Q-switched laser
saturable absorber
Sulfur
Thin films
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Summary:We fabricated a compact reflective molybdenum disulfide (MoS 2 ) saturable absorber (SA) by coating a few layers of a MoS 2 thin film on a silver mirror using the Langmuir-Blodgett (LB) method. The LB method showed to be effective in producing a thin film with smooth surface, low optical scattering, and low nonsaturable losses. By inserting the LB MoS 2 -SA into a V-shaped Nd:GdVO 4 laser cavity, a stable Q-switched laser operation with the maximum average output power of 0.89 W corresponding to a pulse width of 91.6 ns is obtained. The slope efficiency is as high as 44.4% and the optical conversion efficiency is 15.6%, indicating low losses of the LB MoS 2 -SA.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2018.2888594