A series of Zr(1 mol%):Cu(0.1 mol%):Fe(0.03wt%)LiNbO₃ single crystals with various Li/Nb ratios having compositions varying between 48.6 and 58 mol% Li₂O in the melt were grown by the Czochralski method in the air. The OH⁻ transmittance spectra was investigated to characterize the structure defects of these crystals. The OH⁻ absorption peaks shift to longer wavelength as the [Li]/[Nb] ratio increases and an obvious absorption peak at 3468 cm^-1 was observed at the Li/Nb ratio of 1.05. The photorefractive properties of the crystals were experimentally studied using the two-wave coupling method. The results show that as the [Li]/[Nb] ratio increases, the holographic response time and the diffraction efficiency increase under the Li/Nb ratio of 1.2.

Date Published: 13 April 2015
PDF: 4 pages
Proc. SPIE 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II, 95222I (13 April 2015); doi: 10.1117/12.2181662

Published in SPIE Proceedings Vol. 9522:
Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II
Xiangwan Du; Jennifer Liu; Dianyuan Fan; Jialing Le; Yueguang Lv; Jianquan Yao; Weimin Bao; Lijun Wang, Editor(s)