Title :
Comparison of threshold energy of selectively excited YAlO3 :Er and YAG:Er lasers
Author :
Breguet, J. ; Umyskov, A.F. ; Semenkov, S.G. ; Lüthy, W. ; Weber, H.P. ; Shcherbakov, I.A.
Author_Institution :
Inst. of Appl. Phys., Bern Univ., Switzerland
fDate :
11/1/1992 12:00:00 AM
Abstract :
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
Keywords :
erbium; optical pumping; radiative lifetimes; solid lasers; yttrium compounds; YAG:Er lasers; YAl5O12:Er; YAlO3:Er laser; cross-relaxation process; laser level lifetimes; pump light selective filtering; selective excitation; threshold energy; Erbium; Laser beam cutting; Laser excitation; Laser theory; Laser transitions; Low pass filters; Mirrors; Physics; Pump lasers; Switches;
Journal_Title :
Quantum Electronics, IEEE Journal of
