Influence of scattering and two-photon absorption on the optical loss in GaAs-Al2O3 nonlinear waveguides measured using femtosecond pulses

Rao, Soma V.; Μουτζούρης, Κωνσταντίνος Ι.; Ebrahimzadeh, Majid; De Rossi, Alfredo; Gintz, G.

Ημερομηνία Δημοσίευσης: 2003-03

Τύπος Τεκμηρίου: Δημοσίευση σε περιοδικό

Όνομα Περιοδικού: IEEE Journal of Quantum Electronics

The influence of scattering and two-photon absorption on the optical loss In GaAs-Al2O3 semiconductor nonlinear waveguides has been studied using femtosecond pulses. By deploying a scattering technique, loss coefficients were evaluated over an extended wavelength range of 1.3-2.1 μm in the near-infrared. A systematic study involving intensity and wavelength dependence of the loss revealed the presence of two-photon absorption for wavelengths below 1.6 μm. A simple nonlinear transmission study enabled the separation of the two-photon absorption coefficient from scattering and linear absorption. The calculated two-photon absorption coefficients were ∼9-20 cm/GW.

Πηγή: http://ieeexplore.ieee.org/

Θέμα: Technology, Electrical engineering, Τεχνολογία, Ηλεκτρολογία Μηχανολογία

Εμφάνιση πλήρους εγγραφής