Journal
OPTICS AND LASER TECHNOLOGY
Volume 145, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2021.107471
Keywords
Pr,Mg:SrAl12O19; Blue-diode-pumped; Continuous-wave operation; Passively Q-switched operation
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The study presents the recent progress on continuous-wave and passively Q-switched Pr,Mg:SrAl12O19 bulk lasers using a 24-W diode laser as the pump source, demonstrating their potential for visible laser generation.
We report on the recent progress on continuous-wave (CW) and passviely Q-switched Pr,Mg:SrAl12O19 (SRA) bulk lasers using a 24-W diode laser as pump source. Maximum output power of CW laser at 643 nm reached 1.63 W, which is believed to be the highest power that has ever been achieved in diode-pumped Pr3+-doped oxide lasers. After thermal mitigation by a mechanical chopper, a maximum instantaneous output power of 2.32 W can be obtained. For passive Q-switching of Pr,Mg:SRA laser at 724 nm, a Co:ZnSe crystal has been first-time used as saturable absorber, to our knowledge. A maximum average output power of 0.45 W was produced with the shortest pulse width of 180.5 ns at pulse repetition rate of 89.2 kHz, corresponding to pulse energy and peak power of 5 mu J and 28 W. These results indicate that Pr,Mg:SRA is a good oxide candidate for visible laser generation.
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