Spectral shift of femtosecond pulses in nonlinear quadratic PPSLT Crystals

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 harm...

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Bibliographic Details
Published in:Optics express 2006-05, Vol.14 (11), p.4774-4779
Main Authors: Baronio, F, De Angelis, C, Marangoni, M, Manzoni, C, Ramponi, R, Cerullo, G
Format: Article
Language:English
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Summary: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.14.004774