Intensity-induced mode shift in a femtosecond laser by a change in the nonlinear index of refraction.
The modes of the comb spectrum of a Kerr-lens mode-locked laser are frequency shifted versus the corresponding cw modes of the cavity by an intensity-induced change in the index of refraction in the Kerr medium. We demonstrate this effect and discuss novel schemes for fast frequency control of the comb spectrum.
Stenger
J
J
Physikalisch-Technische Bundesanstalt, 38116, Braunschweig, Germany.
Telle
H R
HR