A novel diode-pumped, efficient, quasi-end pumping scheme using two lens ducts, to get homogeneous pumping in the gain medium, is proposed and evaluated. Using this technique, pulsed room-temperature laser action is demonstrated in 5%Tm,0.5%Ho:LuLiF4 and 5%Tm, 0.5%Ho:YLiF4, which we grew by the Czochralski method.

© 2001 Optical Society of America

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