Group-velocity control by quadratic nonlinear interactions

Year: 2006

Authors: Marangoni M., Manzoni C., Ramponi R., Cerullo G., Baronio F., De Angelis C., Kitamura K.

Autors Affiliation: Dipartimento di Fisica, Politecnico di Milano, ULTRAS-CNR-INFM, IFN-CNR, Piazza L. Da Vinci 32, I-20133 Milan, Italy; Dipartimento di Elettronica per l’Automazione, Università di Brescia, via Branze 38, 25123 Brescia, Italy; National Institute for Research in Inorganic Materials, 1-1 Namiki, Tsukuba, 305-0044, Japan

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. (c) 2006 Optical Society of America.

Journal/Review: OPTICS LETTERS

Volume: 31 (4)      Pages from: 534  to: 536

KeyWords: Nonlinear Optics
DOI: 10.1364/OL.31.000534

Citations: 28
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