Abstract

Direct diode pumping of rare-earth active Holmium- or transition metal Chromium ions with InP-diode laser stacks at 1.908 μm in connection with multi-pass pumping thin disk laser concepts will lead to power scalable laser systems in the 2 μm ‘eye-save’ wavelength regions. Narrow tunable Holmium YAG lasers at emission wavelengths of 2.09 μm or 2.05 μm as well as broadly tunable from 2 to 3 μm, with a free running wavelength at 2.4 μm of Cr:ZnSe lasers, offer applications in the field of medicine, material processing, remote sensing of atmospheric gases as well as the use for countermeasure systems in the field of aerospace [1].

© 2013 IEEE