研究目的
Investigating the method for electronically controlled formation of user-defined laser pulse patterns in a synchronously pumped laser based on a semiconductor optical amplifier and an all-fiber resonator.
研究成果
The study demonstrates that mode-locked lasing driven by synchronous pumping can stably sustain nearly arbitrary laser pulse patterns repeatable on each cavity round trip. Direct electronic control of the structure and shape of the generated laser pulse patterns and waveforms is feasible with relatively high accuracy under appropriate conditions.
研究不足
The nearly 1 μs temporal resolution limit due to the moderate modulation bandwidth of the used SOA current driver.
1：Experimental Design and Method Selection:
The study involves a hybrid semiconductor optical amplifier (SOA)-fiber laser with synchronous electrical pumping for mode-locked operation.
2：Sample Selection and Data Sources:
The laser cavity includes a fiber-coupled SOA, a 50% output fiber coupler, and a fiber circulator.
3：List of Experimental Equipment and Materials:
Equipment includes a radiofrequency arbitrary waveform generator (RF AWG) Rigol DG4162, a power meter, an optical spectrum analyzer (OSA), and fast photodiodes connected to an oscilloscope and RF spectrum analyzer.
4：Experimental Procedures and Operational Workflow:
The SOA is pumped electrically through a current driver modulated by user-defined electrical pulse patterns.
5：Data Analysis Methods:
The accuracy of pulse pattern reproduction is evaluated by comparing RF spectra of modulation and laser pulse patterns.
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