研究目的
Investigating the use of D-shaped fiber carbon-nanotube saturable absorber to achieve Q-switched Ho3+-doped fluoride fiber laser in all-fiber configuration for superior compactness and reliability.
研究成果
The D-shaped fiber CNT saturable absorber enabled stable Q-switched operation in a Ho3+-doped all-fiber laser at 1192 nm, achieving high stability and reliability with potential for practical applications.
研究不足
The Q-switched operation became unstable at higher pump powers, indicating a limitation in power handling or thermal management of the saturable absorber.
1：Experimental Design and Method Selection:
Utilized a D-shaped fiber deposited with single-wall carbon-nanotubes as a saturable absorber in a Ho3+-doped fluoride fiber laser setup.
2：Sample Selection and Data Sources:
Used a 10-cm long 3-mol.% Ho3+-doped ZBLAN fiber as the gain medium.
3：List of Experimental Equipment and Materials:
Included a Raman fiber laser at 1150 nm as the pump source, WDMs for coupling, a polarization insensitive isolator, and a D-shaped fiber SA.
4：Experimental Procedures and Operational Workflow:
Pumped the laser at varying powers to establish Q-switched operation, measured pulse duration, repetition rate, and output power.
5：Data Analysis Methods:
Analyzed the laser's performance using an oscilloscope, power meter, optical spectrum analyzer, and RF spectrum analyzer.
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Power meter
S401C
Thorlabs
Measuring the average power of the Q-switched laser.
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Photodetector
DET01CFC
Thorlabs
Measuring the pulse duration and repetition rate of the Q-switched laser.
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Oscilloscope
TDS2048B
Tektronix
Recording the pulse trains of the Q-switched laser.
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Raman fiber laser
Used as the pump source for the laser setup.
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Wavelength division multiplexer
1150/1190 nm fused-type
Coupling the pump source into the laser ring cavity.
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Ho3+-doped ZBLAN fiber
3-mol.%
Used as the gain medium in the laser setup.
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Polarization insensitive isolator
Ensures unidirectional propagation of the light inside the ring laser cavity.
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D-shaped fiber SA
Acts as a saturable absorber for Q-switching the laser.
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Optical spectrum analyzer
AQ6317
ANDO
Measuring the optical spectrum of the Q-switched laser.
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Spectrum analyzer
R3131A
ADVANTEST
Measuring the RF spectrum of the Q-switched laser.
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