Femtosecond Kerr-lens mode locking with negative nonlinear phase shifts

We report a Kerr-lens mode-locked Cr:forsterite laser operated with negative nonlinear phase shift. The nonlinear phase shift is induced by the cascade chi((2;)):chi((2)) process in a lithium triborate crystal. Employing the cascade process at large phase mismatch produces a nearly linear frequency...

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Veröffentlicht in:Optics letters 1999-02, Vol.24 (3), p.166-168
Hauptverfasser: Qian, L J, Liu, X, Wise, F W
Format: Artikel
Sprache:eng
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Zusammenfassung:We report a Kerr-lens mode-locked Cr:forsterite laser operated with negative nonlinear phase shift. The nonlinear phase shift is induced by the cascade chi((2;)):chi((2)) process in a lithium triborate crystal. Employing the cascade process at large phase mismatch produces a nearly linear frequency chirp. Transform-limited pulses as short as 60 fs are generated with positive cavity dispersion.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.24.000166