Relaxation oscillation suppressed, narrow linewidth, high beam quality, 1319 nm long-pulsed duration laser

摘要

We first report a 1319 nm long-pulsed duration laser with relaxation oscillation suppressed by placing lithium triborate crystals into the laser cavity. Two more etalons were added into the laser cavity to further increase the difference in cavity loss between oscillating and non-oscillating modes. With very little reduction in average output laser power, the smooth temporal profile laser pulse was obtained with a pulse duration of 150 mu s. The average output power was 5.45 W, and the beam qualities M-x(2) and M-y(2) were 1.12 and 1.20. (C) 2018 Optical Society of America