Spectral shift of femtosecond pulses in nonlinear quadratic PPSLT crystals

Year: 2006

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

Autors Affiliation: Dipartimento di Elettronica per l’Automazione, Università di Brescia, via Branze 38, 25123 Brescia, Italy; Dipartimento di Fisica – Politecnico di Milano, and Istituto di Fotonica e Nanotecnologie del CNR, Piazza Leonardo da Vinci 32, 20133 Milan, Italy

Abstract: Spectral blue- and red-shifts in a range of 100 nm are achieved by propagating 40 fs pulses with a 70 nm spectrum centered at 1450 nm in a 25-mm-long periodically poled stoichiometric lithium tantalate crystal. We show experimentally that these shifts, originating from a phase-mismatched second harmonic generation process under conditions of strong group-velocity mismatch, can be efficiently controlled by acting on pulse intensity and phase-mismatch. (c) 2006 Optical Society of America.

Journal/Review: OPTICS EXPRESS

Volume: 14 (11)      Pages from: 4774  to: 4779

KeyWords: Nonlinear Optics
DOI: 10.1364/OE.14.004774

Citations: 31
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