Abstract
Ytterbium doped crystals have proven to be an attractive laser medium for continuous wave lasers as well as for short pulse generation [1-6] and have achieved established application in industrial laser systems. This is mainly due to the relatively small quantum defect, which limits the heating effect during the laser process, and the absorption spectrum of this ion that matches perfectly the emission wavelength of high power InGaAs laser diodes which can be used for pumping those laser crystals. Owing to the relatively large gain bandwidth depending on the host matrices Yb-doped crystals are suitable for ultrafast lasers down to the femtosecond regime.
© 2011 Optical Society of America
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