Observation of spectral drift in engineered quadratic nonlinear media

Year: 2008

Authors: Marangoni M., Sanna G., Brida D., Conforti M., Cirmi G., Manzoni C., Baronio F., Bassi P., De Angelis C., Cerullo G.

Autors Affiliation: Dipartimento di Fisica, Politecnico di Milano, Piazza L. Da Vinci 32, I-20133 Milan, Italy; Dipartimento di Elettronica Informatica e Sistemistica, Università di Bologna, Viale Risorgimento 2, I-40136 Bologna, Italy; Dipartimento di Elettronica per l’Automazione, Università di Brescia, Viale Branze 38, I-25123 Brescia, Italy

Abstract: Spectral blueshifts of femtosecond pulses induced by quadratic cascaded nonlinearities are experimentally studied in an engineered aperiodically poled stoichiometric lithium tantalate crystal with optimized nonlinear pattern and chirp of the input pump pulses. Starting from nearly Gaussian input pulses centered at 1420 nm with 70 nm spectral width, spectral shifts as high as 40 nm were obtained in combination with an almost unaltered spectral shape and a transform-limited pulse duration. (C) 2008 American Institute of Physics.

Journal/Review: APPLIED PHYSICS LETTERS

Volume: 93 (2)      Pages from: 021107  to: 021107

KeyWords: Nonlinear Optics
DOI: 10.1063/1.2955529

Citations: 7
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