Perturbative model for nonstationary second-order cascaded effects
Anno: 1998
Autori: Toci G., Vannini M., Salimbeni R.
Affiliazione autori: Istituto di Elettronica Quantistica, Consiglio Nazionale Delle Ricerche, Via Panciatichi 56/30, 50127 Firenze, Italy
Abstract: We report a semianalytical solution describing the type I second-order nonlinear interaction of the fundamental and the second-harmonic fields in a nonlinear crystal, which accounts for the phase- and group-velocity mismatch of the interacting pulses. The method uses a series-development solution of the propagation equations in respect to the second-harmonic conversion efficiency. The method describes the self-phase and self-amplitude modulation experienced by the fundamental pulse in single- and double-pass (i.e., reinjecting into the nonlinear crystal the outgoing pulses) interaction geometries, following better with respect to a numerical analysis, the dependence from the propagation parameters such as the crystal length, the pulse duration, and the phase- and group-velocity mismatch. It appears that it is possible to obtain an efficient self-phase modulation on the fundamental field even in nonstationary conditions. This paper describes the advantages of a double-pass configuration, which, for a given crystal length, allows a stronger nonlinear phase modulation of the fundamental field and minimize its losses toward the second harmonic.
Giornale/Rivista: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B: OPTICAL PHYSICS
Volume: 15 (1) Da Pagina: 103 A: 117
Parole chiavi: GROUP-VELOCITY MISMATCH; PULSE 2ND-HARMONIC GENERATION; NONLINEAR-OPTICAL PROCESSES; LIMITED FUNDAMENTAL PULSES; 2ND-ORDER NONLINEARITIES; HARMONIC-GENERATION; PHASE MODULATION; PARAMETRIC LENS; LOCKING; LASERDOI: 10.1364/JOSAB.15.000103Citazioni: 6dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-05Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui