Yb:YAG disk laser pumped by a stacked diode array

Nicolas Kugler; Thomas Brand; I. Schmidt; Chunyu Gao; Horst Weber

doi:10.1117/12.334794

29 December 1998 Yb:YAG disk laser pumped by a stacked diode array

Nicolas Kugler, Thomas Brand, I. Schmidt, Chunyu Gao, Horst Weber

Proceedings Volume 3682, Laser Optics '98: Solid State Lasers; (1998) https://doi.org/10.1117/12.334794
Event: Laser Optics '98, 1998, St. Petersburg, Russian Federation

Abstract

A major problem using laser diodes for longitudinal pumping of solid state lasers is the poor beam quality and the non symmetric beam profile of the diodes as the astigmatic beam emitted from the array of diodes exhibits a limited focusability in the direction of the slow axis of the diodes. To overcome this problem an optic which turns the astigmatic beam of a stacked diode array into a radially symmetric (stigmatic) beam has been designed. This symmetric beam is then focused into an axially water cooled disk laser to serve as a longitudinal pump source. Up to now different laser crystals have been investigated as laser source. Using Yb:YAG an output power of 60 W in qcw operation has been realized whereas Nd:YVO₄ delivers a qcw power of 113 W. The optical to optical efficiencies are 18% and 32.3% respectively.

Citation Download Citation

Nicolas Kugler, Thomas Brand, I. Schmidt, Chunyu Gao, and Horst Weber "Yb:YAG disk laser pumped by a stacked diode array", Proc. SPIE 3682, Laser Optics '98: Solid State Lasers, (29 December 1998); https://doi.org/10.1117/12.334794

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