Effect of rhodium doping on the photorefractive properties of BCT crystals at 850nm - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied Physics B - Laser and Optics Année : 2001

Effect of rhodium doping on the photorefractive properties of BCT crystals at 850nm

Résumé

We present an experimental investigation of the photorefractive properties of rhodium doped barium calcium titanate crystals of the congruently melting composition Ba0.77Ca0.23TiO3. Considering the results previously obtained on this crystal in the visible region, it should be a good alternative to BaTiO3. Nevertheless, many applications use infrared light. Therefore we present here a study of rhodium doped BCT crystals at 850 nm. This wavelength is of special interest as it is in the spectral range of laser diodes. Rhodium doping is expected to enhance the sensitivity of the crystal in the infrared as it is the case for BaTiO3. We first noticed that BCT:Rh crystals are sensitive at this wavelength as expected. Furthermore, the photorefractive properties are interesting in term of photorefractive gain, with a gain as high as 3 cm-1 with ordinary polarization. This study has also put forward the fact that rhodium is not the only defect that participates in the photorefractive effect. Indeed, a large quantity of iron seems to be present in the BCT crystals and to participate in the photorefractive effect
Fichier principal
Vignette du fichier
PhD1-39Auteur.pdf (1.67 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00674648 , version 1 (27-02-2012)
hal-00674648 , version 2 (30-03-2012)

Identifiants

Citer

Sylvie Bernhardt, H. Veenhuis, Philippe Delaye, R. Pankrath, Gérald Roosen. Effect of rhodium doping on the photorefractive properties of BCT crystals at 850nm. Applied Physics B - Laser and Optics, 2001, 72, pp.667-675. ⟨10.1007/s003400100574⟩. ⟨hal-00674648v1⟩
211 Consultations
193 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More