High-speed narrow pulse modulation driving power supply for semiconductor laser

The invention discloses a high-speed narrow pulse modulation driving power supply for a semiconductor laser. The high-speed narrow pulse modulation driving power supply comprises a semiconductor laser driving circuit and a high-precision temperature control circuit, wherein the semiconductor laser driving circuit adopts a high-speed MOSFET as a switch. The driven semiconductor laser can output the required laser pulse with high frequency, quick advancing front, narrow pulse width, controllable pulse peak and smooth waveform according to the parameters of the semiconductor laser by changing the power supply voltage, resistance and capacitance in the driving power supply circuit.