Combined effects due to phase, intensity and contrast in electrooptic modulation. Application to ferroelectric materials - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue IEEE Journal of Quantum Electronics Année : 1999

Combined effects due to phase, intensity and contrast in electrooptic modulation. Application to ferroelectric materials

Résumé

The combination of phase, intensity, and contrast effects during electrooptic modulation is theoretically and exper- imentally investigated. One consequence of this combination is the modification of the amplitude of the single-frequency signals which are commonly used as working points for electrooptic mod- ulators and for the measurements of the electrooptic coefficients. Another consequence of direct intensity modulation is to shift the double-frequency points of the transfer function from the positions they normally occupy at the intensity extrema. They can even make them disappear if the direct intensity modulation is stronger than the phase modulation. Such phenomena are expected with any ferroelectric material in which a significant part of the incident light is deflected or scattered by domain walls or grain boundaries. They can lead to considerable mistakes in the determination of the electrooptic coefficients. Appropriate procedures to extract the different contributions are explained. Experimental results in rubidium hydrogen selenate are given, and consequences of the working of electrooptic modulators are discussed.
Fichier principal
Vignette du fichier
IEEE.pdf (267.47 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-00186038 , version 1 (28-03-2008)

Identifiants

Citer

L. Guilbert, Jean-Paul Salvestrini, H. Hassan, M. D. Fontana. Combined effects due to phase, intensity and contrast in electrooptic modulation. Application to ferroelectric materials. IEEE Journal of Quantum Electronics, 1999, 35 (3), pp.273-280. ⟨hal-00186038⟩
42 Consultations
235 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More