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We report on diode-pumped laser operation of Pr3+,Mg2+:SrAl12O19 at lasing wavelengths of λL = 724.4 nm, λL = 643.5 nm, and λL = 622.8 nm. Furthermore, the laser threshold could be reached in the green spectral range. By pumping the crystal longitudinally from each side with two polarization beam combined InGaN laser diodes, a total pump power of ≈4 W was available. In the deep red spectral range,...
In recent years the direct laser-writing technique with ultrashort pulses became a great tool for the fabrication of three dimensional integrated optical devices in dielectric media. Highly efficient miniaturized lasers, emitting in the near infrared have been realized by the inscription of waveguides in various rare earth doped crystals [1, 2].
The use of Yb 3+ as a sensitizer for Er 3+ doped laser materials is a common technique because of the high Yb 3+ absorption cross sections. Energy transfer processes from Yb 3+ to Er 3+ in Sc 2 O 3 are studied by two different methods. Transfer parameters describing the interactions between Er 3+ and Yb 3+ ions are obtained on...
We present an efficient in-band-pumped Er(0.2 at.%):Sc2O3-laser at 1581 nm with a maximum output power of 0.95 W and a maximum slope efficiency of 31%.
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