Diode-pumped 99 fs Yb:CaF2 oscillator.
We demonstrate the generation of 99 fs pulses by a mode-locked laser oscillator built around a Yb:CaF(2) crystal. An average power of 380 mW for a 13 nm bandwidth spectrum centered at 1053 nm is obtained. The short-pulse operation is achieved thanks to a saturable absorber mirror and is stabilized by the Kerr lens effect. We investigated the limits of the stabilization process and observed a regime slowly oscillating between mode locking and Q switching.
Laboratoire Charles Fabry de l'Institut d'Optique, CNRS, Université Paris-Sud, RD 128 91127 Palaiseau, France.
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Friebel
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Druon
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Boudeile
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Papadopoulos
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Hanna
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Georges
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Camy
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Doualan
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Benayad
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Moncorgé
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Cassagne
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Boudebs