Photorefractive Lithium Niobate crystals: light polarisation rotation highlighted by transmission Raman spectroscopy

Photorefractive Photonics 2017

Kokanyan, N.^1,2 ; Bazzan, M.^3 ; Chapron, D.^1,2 ; Fontana, M.D.^1,2

CentraleSupelec, Laboratoire Matériaux Optiques, Photonique et Systèmes, 2 rue E. Belin, Metz

57070, France^1

Université de Lorraine, Laboratoire Matériaux Optiques, Photonique et Systèmes, 2 rue E. Belin, Metz

57070, France^2

Physics and Astronomy Department, Universita di Padova, Via Marzolo 8, Padova

35131, Italy^3

关键词: Big changes;    Congruent lithium niobate;    Incident light;    Lithium niobate crystal;    Photo-refractive;    Photorefractive properties;    Raman selection rules;    Transmission raman spectroscopies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/867/1/012035/pdf
DOI  :  10.1088/1742-6596/867/1/012035

来源: IOP

【 摘 要 】

Transmission Raman spectroscopy experiments as a function on time were carried out on iron doped photorefractive congruent lithium niobate crystals. A big change with time in Raman spectra is observed when the incident light is polarized along ordinary axis. The mentioned breaking of Raman selection rules is originated by photorefractive properties of the crystal.