Frequency shifts of optical pulses can be achieved exploiting propagation in nonlinear crystals. Spectral blue-shifts and red-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. We show theoretically and experimentally that spectral blue-shifts and spectral 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. This crystal can be exploited for the realization of a single-pass device that tunes the carrier frequency output from a femtosecond fiber laser with continuity and over a broad range.

F. Baronio, C. De Angelis, G. Sanna, P. Bassi, C. Manzoni, M. Marangoni, et al. (2006). Dispositivi ottici per il controllo spettrale dei segnali. GENOVA : s.n.

Dispositivi ottici per il controllo spettrale dei segnali

SANNA, GUIDO;BASSI, PAOLO;
2006

Abstract

Frequency shifts of optical pulses can be achieved exploiting propagation in nonlinear crystals. Spectral blue-shifts and red-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. We show theoretically and experimentally that spectral blue-shifts and spectral 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. This crystal can be exploited for the realization of a single-pass device that tunes the carrier frequency output from a femtosecond fiber laser with continuity and over a broad range.
2006
Atti della XVI Riunione Nazionale di Elettromagnetismo
564
567
F. Baronio, C. De Angelis, G. Sanna, P. Bassi, C. Manzoni, M. Marangoni, et al. (2006). Dispositivi ottici per il controllo spettrale dei segnali. GENOVA : s.n.
F. Baronio; C. De Angelis; G. Sanna; P. Bassi; C. Manzoni; M. Marangoni; R. Ramponi; G. Cerullo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/45310
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