The ErPico-780 ProL is an all-fiber femtosecond laser in the near infrared band, using an Erbium-doped fiber laser combined with nonlinear crystal frequency doubling. The output wavelength is 775nm, the pulse width is 15ps, the typical type reduplication frequency is 80 M H z, and the output power rate is 160mW and 320mW. The light source is based on highly stable fiber seed source, automatic mode-locked pulse technology, low noise cascade fiber amplification, nonlinear and dispersion fine management, with extremely high reliability and stability, suitable for a variety of scientific research and industrial applications, can meet the needs of system integration applications.