Abstract

We demonstrate a passively mode-locked femtosecond Yb:KLu(WO4)2 thin-disk laser oscillator. Chirped-pulse operation in the positive dispersion regime as well as solitary operation have been realized, and the laser performance of both configurations are compared. In the solitary mode-locking regime the output power exceeds 25W in a diffraction-limited beam, and pulse durations as short as 440fs at a 34.7MHz repetition rate have been generated. For the first time we present a chirped-pulse operation of a thin-disk oscillator that yields a maximum average output power of 9.5W with a Fourier limit of 450fs.

© 2008 Optical Society of America

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