The r33 electro-optic coefficient of Er:LiNbO3
Résumé
By exploiting a Mach–Zehnder interferometer, the r33 electro-optic coefficient of erbium-bulk-doped lithium niobate crystals grown by the Czochralski technique was measured depending on the erbium content. The r33 coefficient decreases with the erbium concentration. Such a trend has been connected with both the reduction of the lattice parameter, measured by high resolution x-ray diffraction, and the increase of lattice defects.