QCL-100 High-speed Picosecond Pulsed Laser provided ultra-short laser pulses typically of several tens of picoseconds. Applying the originally-developed narrow-pulse-shaping technique, outstanding features are obtained, including high repetition frequency, narrow pulse width, high extinction, phase randomization. QCL-100 high-speed picosecond pulsed laser with high performance and low cost is an excellent candidate for quantum secret communication, single photon detector test and other applications.