1000W compound coupling high beam quality diode laser

摘要

KW-class high-beam quality diode laser system was introduced in this paper. In this system, the wavelengths of 808nm, 915nm, 940nm, and 980nm were used for the wavelength coupling and polarization coupling. The wavelength coupling and polarization coupling can reach the optical efficiency of 91.4%. Before wavelength coupling, polarization coupling and beam shaping, the maximum output power of the laser was 1200W, and after that, 1031W was achieved, so the overall conversion efficiency reached 85.9 %. 12mm · mrad of the output beam quality was realized in both the fast axis and the slow axis. Through intelligent control, the diode laser can work in different wavelength, different power and different pulse width. Because of its output power and beam quality, this laser system can be used in the ultra-long-distance laser detection, laser remote sensing and many other demands.