研究目的
Investigating a novel method to produce Saturable Absorbers (SAs) from plastic materials and glycol for use in ultrashort pulsed laser systems, aiming to simplify the fabrication process and make it cost-effective.
研究成果
The study successfully demonstrated a novel method to produce inexpensive SAs from plastic materials and glycol, which can be easily prepared and applied without prior knowledge in material sciences. This approach opens the door to unlimited families of SAs for ultrashort pulsed laser systems.
研究不足
The study is limited to the use of plastic materials and glycol for SAs and does not compare with other mode-locking methods or materials. The technique's applicability to other materials and laser systems requires further investigation.
1：Experimental Design and Method Selection:
The study focused on increasing the thickness of plastic materials and glycol until the modulation depth was sufficient to provide stable ultrashort pulses.
2：Sample Selection and Data Sources:
Four materials were selected for testing: Poly Styrene Methyl Methacrylate (SMMA), Polyvinyl Alcohol (PVA), Sodium Salt of Carboxymethylcellulose (CMC), and glycol.
3：List of Experimental Equipment and Materials:
Commercial spectrometer (Yokogawa, Japan), autocorrelator (APE, Germany), fast photodetector (Newport, United States), oscilloscope (Keysight, United States), radio frequency spectrum analyzer (Anritsli, Japan), Raman spectrometer (Horiba, Japan), spectrometer (Agilent, United States), Optical Parametric Oscillator (OPO) system (Coherent, United States).
4：Experimental Procedures and Operational Workflow:
The samples were tested systematically in a laser cavity to observe mode-locking. Non-linear optical transmission was measured using an OPO system.
5：Data Analysis Methods:
The obtained data were analyzed to determine the modulation depth and other parameters relevant to mode-locking.
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Optical Parametric Oscillator
OPO
Coherent
Measuring non-linear optical transmission
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spectrometer
Yokogawa
Obtaining spectrums of laser pulses
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autocorrelator
APE
Measuring pulse duration
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fast photodetector
Newport
Detecting laser pulses
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oscilloscope
Keysight
Observing pulse trains
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radio frequency spectrum analyzer
Anritsli
Analyzing radio frequency spectrum of laser pulses
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Raman spectrometer
Horiba
Obtaining Raman spectrums of samples
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spectrometer
Agilent
Measuring transmissions of samples
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