Cr2+: ZnSe laser pumped by 1.66 mu m or 1.97 mu m radiations

摘要

Cr:ZnSe crystal newly grown by Bridgman method was investigated as a active material for laser coherently pumped either by flashlamp-pumped Er:YAP (wavelength 1.66 mu m) or by diode pumped Tm:YAP (wavelength 1.97 mu m) laser radiations. The maximal Cr:ZnSe laser output pulse energy, for the case of flashlamp Er:YAP laser pumping, was 14 mJ (slope efficiency 66%) with the length of pulses 120 mu s. The generated laser radiation was tunable form 2.15 mu m to 2.60 mu m with only 2.5 times drop in laser energy. In the case of diode-pumped Tm:YAP laser pumping the maximal obtained Cr:ZnSe laser output power in cw regime was 195 mW for the absorbed pump power 300 mW (slope efficiency 66%). The generated laser radiation was tunable from 2.12 mu m up to 2.38 mu m.