We give direct experimental evidence that the group velocity of ultrashort pulses can be controlled through x((2))-cascaded interactions, under the condition of large group-velocity mismatch. The group velocity can be finely tuned by acting on pulse intensity and phase mismatch. Group-delay shifts up to 50 fs are achieved by propagating 40 fs pulses around 1400 mn in a 25 mm long periodically poled stoichiometric lithium tantalate crystal.
Group-velocity control by quadratic nonlinear interactions
Marangoni M;Manzoni C;Ramponi R;Cerullo G;
2006
Abstract
We give direct experimental evidence that the group velocity of ultrashort pulses can be controlled through x((2))-cascaded interactions, under the condition of large group-velocity mismatch. The group velocity can be finely tuned by acting on pulse intensity and phase mismatch. Group-delay shifts up to 50 fs are achieved by propagating 40 fs pulses around 1400 mn in a 25 mm long periodically poled stoichiometric lithium tantalate crystal.File in questo prodotto:
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