Abstract

Many diode-pumping schemes have been developed for high power solid state laser with high efficiency and good beam quality.^1,2 Some of the successful schemes are multiple end-pumping,³ fiber laser⁴ and the virtual source clad pumping,⁵ which relax thermal effects by increasing the pumping length while maintaining beam overlap efficiency, and by reducing the heat generated per unit length. In particular, fiber laser provides output power of several watts in spite of the poor thermal properties of the glasses.

© 1995 IEEE