研究目的
To demonstrate a high stable polarization-insensitive Er-doped Q-switched fiber laser using iron oxide nanoparticles as saturable absorber.
研究成果
The IONP SA demonstrated high stability and efficiency in generating Q-switched pulses in an Er-doped fiber laser, with potential for broad application due to its compact and low-cost nature.
研究不足
The study is limited to the use of IONP as SA in Er-doped fiber lasers and does not explore other types of nanoparticles or laser configurations.
1：Experimental Design and Method Selection
The IONP was synthesized via the chemical co-precipitation method and prepared into IONP-PVA film to act as the SA in an Er-doped fiber laser.
2：Sample Selection and Data Sources
FeCl2 anhydrous and FeCl3 anhydrous were used as precursors for IONP synthesis. The Er-doped fiber laser setup included a pump source, WDM, Er-doped fiber, PI-ISO, OC, and measurement instruments.
3：List of Experimental Equipment and Materials
Fiber coupled laser diode (LD), wavelength division multiplexer (WDM), Er-doped fiber, polarization independent isolator (PI-ISO), optical coupler (OC), spectrum analyzer (Yokogawa AQ6370D), RF spectrum analyzer (Agilent E4407B), oscilloscope (R&S RTO2004).
4：Experimental Procedures and Operational Workflow
IONP synthesis, preparation of IONP-PVA film, setup of the Er-doped fiber laser, measurement of laser output properties.
5：Data Analysis Methods
Measurement of pulse sequence, spectrum, pulse duration, and RF spectrum using the specified instruments.
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RF spectrum analyzer
E4407B
Agilent
Measurement of RF spectrum
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Oscilloscope
RTO2004
R&S
Measurement of pulse sequence
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Spectrum analyzer
AQ6370D
Yokogawa
Measurement of laser output spectrum
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Fiber coupled laser diode
LD
Not specified
Pump source for the Er-doped fiber laser
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Wavelength division multiplexer
WDM
Not specified
Systemically connected the pump source to the ring cavity
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Er-doped fiber
Not specified
Not specified
Gain medium
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Polarization independent isolator
PI-ISO
Not specified
Guarantee laser unidirectional transmission in the ring cavity
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Optical coupler
OC
Not specified
Exported 20% of the power from the laser oscillator
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