研究目的
To demonstrate a nanosecond pulse seed source with a diode laser (DL) of 1550 nm, driven by a high-speed circuit and a temperature control circuit, achieving adjustable repetition frequency and pulse duration with high stability.
研究成果
The designed high-speed circuit powered nanosecond pulse seed source successfully produced continuously adjustable pulses with high stability and fine tuning capability, demonstrating great potential for applications in various fields such as biological medicine and optical communication.
研究不足
The complexity and cost of the systems mentioned in the literature review, as well as the potential for optimization in the current design to further improve output power and stability.
1：Experimental Design and Method Selection:
The experiment involved designing a high-speed circuit consisting of a short pulse generator and a short pulse driver to drive the diode laser (DL). A temperature control circuit was used to stabilize the laser pulses.
2：Sample Selection and Data Sources:
A distributed feedback (DFB) butterfly semiconductor laser integrated with a thermistor and a thermoelectric cooler (TEC) was used.
3：List of Experimental Equipment and Materials:
Equipment included a CPLD for signal generation, a programmable delay chip (DS1023-25), a MOSFET switch (IC-HG of IC-Haus Company), and a TEC controller (ADN8830).
4：0). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The short pulse generator produced signals to actuate the MOSFET switch, which in turn drove the DL to emit short optical pulses. The temperature control circuit stabilized the DL's operating temperature.
5：Data Analysis Methods:
The profiles of seed pulses were recorded using an InGaAs detector and a 1 GHz oscilloscope, and the spectrums were measured by a spectrum analyzer.
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