研究目的
Investigating the soliton formation and evolution from an erbium-doped ?ber laser mode-locked by mechanically exfoliated PtSe2 saturable absorber.
研究成果
PtSe2 has been proven to be a promising saturable absorber for ultrashort pulse modulation, providing an ideal platform to investigate soliton formation and dynamics in fiber lasers.
研究不足
The non-uniform distribution of PtSe2 weakens the interaction between materials and guided light, requiring a relatively large pump power for pulsed output.
1：Experimental Design and Method Selection:
The study employed a passively mode-locked ?ber laser operating in a ?ber ring cavity to explore soliton dynamics using PtSe2 as a saturable absorber.
2：Sample Selection and Data Sources:
Mechanically exfoliated PtSe2 was transferred onto a D-shaped ?ber to form a saturable absorber.
3：List of Experimental Equipment and Materials:
The setup included a fiber ring laser with SMF-28, EDF, a 975 nm laser diode, WDM, output coupler, PI-ISO, and PCs.
4：Experimental Procedures and Operational Workflow:
The pump power was increased to observe different soliton patterns, and PCs were adjusted to tune the polarization state.
5：Data Analysis Methods:
Optical spectrum, pulse trace, autocorrelation trace, and radio frequency spectrum were analyzed to characterize the soliton patterns.
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PtSe2
HQ Graphene Company
Saturable absorber for mode-locked fiber laser
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SMF-28
Standard passive single mode fiber used in the fiber ring cavity
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EDF
LIEKKI Er 80-8/125
Active erbium-doped fiber used in the fiber ring cavity
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Laser Diode
Pump laser with a central wavelength of 975 nm
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WDM
980/1,550
Wavelength-division multiplexer to introduce the pump laser into the fiber ring cavity
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PI-ISO
Polarization independent isolator to enforce unidirectional operation of the intra-cavity laser
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PCs
Polarization controllers to tune the polarization state of the light circulating in the cavity
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