High-Beam-Quality All-Sol id-State 355 nm Ultraviolet Pulsed Laser Based on a Master-Oscillator Power-Amplifier System Pumped at 888 nm

摘要

An efficient all-solid-state 355 nm ultraviolet laser based on an 888 nm pumped master-oscillator power-amplifier (MOPA) system is presented. Due to the high beam quality of the fundamental wave being superior to 1.15 (M~2) under all pump powers and pulse repetition frequencies (PRFs), the UV laser has the advantage of being able to operate continuously from zero to maximum power. The maximum green and UV output powers were 45.9W at 50kHz and 24.3W at 65kHz with the corresponding conversion efficiencies from IR-to-green and IR-to-UV of 66.0% and 34.1%, respectively.