High Laser Efficiency Due To Cr3+ Sensitization In Cr:Nd:GGG

Free running laser efficiency measurements were performed with Cr:Nd:GGG and Nd:YAG laser crystals. The round trip loss factor has been determined using the Findley Clay method. The slope and intrinsic lasing efficiencies of Cr:Nd:GGG were a factor of 1.6 higher than for Wd:YAG. Absorption and photoluminescence excitation spectroscopy data reveal that the Cr 3+ sensitization is highly efficient.