Kwiatkowski, J.; Swiderski, J.; Zendzian, W.; Jabczynski, J. K.; Gorajek, L.; Kaskow, M. Resonantly Pumped, Q-Switched Ho:YLF Laser With Output Energy of 5 MJ at 1 KHz. Photonics Lett. Pol. 2014, 6, pp. 5-7.