Spectral shaping of femtosecond pulses in aperiodic quasi-phase-matched gratings

Matteo Conforti (1) , Fabio Baronio , Costantino De Angelis (1) , Guido Sanna (2) , Davide Pierleoni (2) , Paolo Bassi (2)

1 Dipartimento di Ingegneria dell'Informazione [Brescia]
2 DEIS - Department of Electronics, Computer Science and Systems [Bologne]

We analyze the use of cascading second harmonic interactions in quadratic non-linear crystals to mould the spectral characteristics of broadband near-infrared femtosecond pulses. Using a genetic algorithm, we optimize the design of the ape-riodically poled ferroelectric crystal capable of generating the desired femtosecond infrared pulsed radiation.

Mots clés: Quasi phase matching; Second harmonic generation; Pulse shaping; Genetic algorithms

Domaines: Optique [physics.optics]

Matteo Conforti, Fabio Baronio, Costantino De Angelis, Guido Sanna, Davide Pierleoni, et al.. Spectral shaping of femtosecond pulses in aperiodic quasi-phase-matched gratings. Optics Communications, 2008, 281 (6), pp.1693-1697. ⟨10.1016/j.optcom.2007.11.046⟩. ⟨hal-02397826⟩