Efficient continuous-wave and passively Q-switched lasers based on disordered Nd:Ca0.7La0.3Al12O19 crystals. (May 2020) - Zong, Mengyu
Highlights: The performance of diode-pumped (Nd 3+ -doped) Ca0.7 La0.3 Al12 O19 (Nd:CLA) lasers was studied for the first time. By inserting a Cr 4+ :YAG absorber, we successfully achieved a passively Q-switched laser. Comparation between a- and c-cut disordered Nd:CLA lasers were made. Abstract: A new neodymium-doped (Nd 3+ -doped) Ca0.7 La0.3 Al12 O19 (Nd:CLA) disordered crystal was successfully grown by the Czochralski method. The performance of diode-pumped Nd:CLA (a-cut and c-cut) lasers was demonstrated for the first time. For the c-cut crystal continuous-wave (CW) operation, we obtained the highest output power of 2.08 W at the wavelength of 1053.2 nm, and the slope efficiency was 23% versus the incident pump power. By inserting a Cr 4+ :YAG absorber, we successfully achieved a passively Q-switched laser, and the shortest pulse width was 18.36 ns with a peak power of 364.6 W. Compared with a-cut crystal, c-cut crystal has superior laser characteristics.