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Multiwavelength Q-switched pulse operation with gold nanoparticles as saturable absorber

Date
2019
Abstract
A multiwavelength Q-switched pulse operation obtained directly using a Tm-doped fiber laser and employing gold nanoparticles (GNPs) as a saturable absorber (SA material) is reported. The GNPs SA exhibits a modulation depth of 5.4% and a nonsaturable loss of 21.3%. Due to the saturable absorption and the high nonlinearity, dual-wavelength and triple-wavelength Q-switched pulse operations are obtained at pump power levels of 200 and 500 mW. To the best of our knowledge, this is the first ever reported use of GNPs as SA in multiwavelength Q-switched lasing generation.
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Description
peer-reviewed
Publisher
Society of Photo-Optical Instrumentation Engineers (SPIE)
Citation
Optical Engineering;58 (6)
Collections
Electronic & Computer Engineering
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Lewis_2020_Multiwavelength.pdf
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Keywords
gold nanoparticles SA, multiwavelength fiber laser, Q-switched pulse
ULRR Identifiers
https://hdl.handle.net/10344/8924
 https://doi.org/10.34961/3857
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Funding Information
National Natural Science Foundation of China, Natural Science Foundation of Heilongjiang
Sustainable Development Goals
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