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Publication . 2021

Diode pumped cryogenic Yb:Lu.sub.3./sub.Al.sub.5./sub.O.sub.12./sub. laser in continuous-wave and pulsed regime

David, S. (Samuel Paul); Jambunathan, V. (Venkatesan); Yue, F. (Fangxin); Lucianetti, A. (Antonio); Mocek, T. (Tomáš);
Open Access   English  
Published: 01 Jan 2021
Country: Czech Republic
We report on diode pumped cryogenic Yb: Lu3Al5O12 (LuAG) laser in the continuous-wave and pulsed regime. Under given experimental condition, we determined an optimum crystal temperature of 140 K for efficient laser operation. A maximum output power of 10.46 W with slope efficiency values of 48.6 and 67% with respect to incident and absorbed power respectively were achieved for an output coupler transmission of 40%. Yb:LuAG laser performed significantly better at 140 K with an output power 16 times and slope efficiency 7 times better than the values at 240 K. Self-starting passively Q-switched Yb:LuAG lasers were also characterized using Cr:YAG saturable absorbers with three different initial transmissions. A maximum pulse energy of 0.215 mJ and a peak power of 1.46 kW were obtained corresponding to the shortest pulse duration of 148 ns.

LuAG crystal, cryogenic lasers, diode pumped solid state laser, passive Q-switching

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Funded by
HiLASE Centre of Excellence
  • Funder: European Commission (EC)
  • Project Code: 739573
  • Funding stream: H2020 | SGA-CSA