研究目的
Investigating the use of zirconium disulfide (ZrS2) as a saturable absorber in an Er-doped fiber laser to achieve stable mode-locking operation and generate ultrafast laser pulses.
研究成果
The work demonstrates that ZrS2 can be used as effective saturable absorbers for ultrafast mode-locked lasers, providing a new solution for generating ultrafast pulses. The ZrS2-SA shows good stability and a large thermal damage threshold, making it suitable for constructing mode-locked fiber lasers at 1.5 μm.
研究不足
The pulse characteristics of the laser are affected by nonlinear polarization rotation effect induced by D-shaped fiber. The laser fails to initiate the mode-locking operation without ZrS2-SA in the laser cavity.
1：Experimental Design and Method Selection:
The study utilizes ZrS2 as a saturable absorber in an Er-doped fiber laser to achieve mode-locking operation. The nonlinear saturable absorption character of the ZrS2-SA is investigated using a balanced twin-detector measurement technology.
2：Sample Selection and Data Sources:
Few layer ZrS2 dispersion obtained by liquid phase exfoliation technology is used. The ZrS2 nanosheets are deposited on a D-shaped fiber to enhance interaction with laser light.
3：List of Experimental Equipment and Materials:
A homemade ultrafast fiber laser, polarization controller, optical coupler, optical power meters, and a ZrS2-SA prepared by depositing ZrS2 on a D-shaped fiber.
4：Experimental Procedures and Operational Workflow:
The ZrS2-SA is inserted into an Er-doped fiber laser setup. The laser is pumped by a 980 nm laser diode, and the output characteristics are analyzed.
5：Data Analysis Methods:
The nonlinear saturable absorption of the ZrS2-SA is fitted according to a simplified two-level saturable absorption model.
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获取完整内容-
ZrS2-SA
Saturable absorber for mode-locking operation in fiber lasers.
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D-shaped fiber
Enhances interaction between ZrS2 nanosheets and laser light.
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Er-doped fiber
Active medium for the fiber laser.
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Single mode fiber
Part of the laser cavity.
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Polarization-independent tap-isolator-wavelength-division multiplexer
PI-TIWDM
Inputs pump power to laser cavity, ensures unidirectional operation, and exports intracavity power.
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Laser diode
Pumps the fiber laser.
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Polarization controller
PC
Changes the polarization state of light in the laser cavity.
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Optical power meter
OPM
Monitors optical power from two branches in the nonlinear saturable absorption measurement setup.
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