研究目的
Investigating the development of a compact 1.7-μm all-polarization-maintaining ultrafast fiber laser source for improving multiphoton imaging depth.
研究成果
The developed 1.7-μm femtosecond all-PM fiber laser source demonstrates high stability, efficiency, and potential for improving multiphoton imaging depth. The experimental and simulation results validate the effectiveness of SSFS in achieving the desired wavelength shift and pulse characteristics.
研究不足
The study focuses on the development of a laser source and its potential application in multiphoton imaging, but does not extensively explore the imaging applications or compare with other laser sources in depth.
1：Experimental Design and Method Selection:
The study employs soliton self-frequency shift (SSFS) in an optical fiber as the dominant spectral-shifting mechanism. The laser cavity with all-PM-fiber components generates environmentally stable pulses.
2：Sample Selection and Data Sources:
The experiment uses a homemade Er-doped mode-locked fiber laser and a 460-m standard PM telecom fiber for SSFS-enabled wavelength-shift.
3：List of Experimental Equipment and Materials:
Includes a PM-NALM-based Er-doped fiber laser, a 460-m standard PM telecom fiber, and various optical components like wavelength-division multiplexers, isolators, and output couplers.
4：Experimental Procedures and Operational Workflow:
The femtosecond pulses are coupled into the SSFS module for generating 1.7 μm wavelength. The optical spectrum and pulsed characteristics are measured using an optical spectrum analyzer and an autocorrelator.
5：7 μm wavelength. The optical spectrum and pulsed characteristics are measured using an optical spectrum analyzer and an autocorrelator. Data Analysis Methods:
5. Data Analysis Methods: The performance of the laser is analyzed based on pulse width, repetition rate, spectral bandwidth, average power, and stability.
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digital oscilloscope
MSOX6004A
Keysight
Monitoring the performance of mode locked laser
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radio frequency spectrum analyzer
E4447A
Agilent
Analyzing the radio frequency spectrum of the laser
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autocorrelator
FR-103XL
Femtochrome
Detecting the pulsed characteristics of the laser
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optical spectrum analyzer
AQ6375B
YOKOGAWA
Measuring the optical spectrum of the laser output
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