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Comparison of threshold energy of selectively excited YAlO3 :Er and YAG:Er lasers

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6 Author(s)
J. Breguet ; Inst. of Appl. Phys., Bern Univ., Switzerland ; A. F. Umyskov ; S. G. Semenkov ; W. Luthy
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Laser performance was studied for YAlO3:Er and YAG:Er lasers that were excited with selective filtering of the pump light. In particular, the influence of the cross-relaxation process W was studied. The threshold energy for YAlO3:Er is lower than for YAG:Er. This disparity is attributed to the differences in the lifetimes of the laser levels of the two crystals

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IEEE Journal of Quantum Electronics  (Volume:28 ,  Issue: 11 )