Study on growth and storage properties of Zn:In:Fe:LiNbO 3 crystals

Rui Wang, Yuheng Xu, Xinrong Liu, Duanyi Xu, Kees A. Schouhamer Immink, Keiji Shono
2005 Advances in Optical Data Storage Technology  
Zn ions were added into melts with 4.0mol.%, Fe ions were with 0.02mol.%, and In ions were with varying concentration of 0, 1.0, 2.0 and 3.0mol.%. A series of Zn:In:Fe:LiNbO 3 Crystals were grown by Czochralski technique. Their absorption spectra and photo-damage resistant ability were measured. The mechanism of the shift of OHabsorption peak was investigated. Their photorefractive properties were experimentally investigated by using two-beam coupling. The results shown that, the photo-damage
more » ... the photo-damage resistant ability of Zn(4mol.%):In(3mol.%): Fe(0.02mol.%):LiNbO 3 Crystals were two orders than that of magnitude higher than that of Fe:LiNbO 3 crystals, and with concentration of Zn and In ions increasing, diffraction efficiency and response time of crystals were shortened. The experiment of associative memory were also carried out with Zn(4mol.%):In(3mol.%):Fe(0.02mol.%):LiNbO 3 crystals for the recording device and with Zn(4mol.%):In(2mol.%):Fe(0.02mol.%):LiNbO 3 Crystals for phase conjugation. The starting materials used for crystal growth are Li 2 CO 3 , Nb 2 O 5 , Fe 2 O 3 , ZnO and In 2 O 3 . The purities of them are all 99.99%. The congruent composition of Li:Nb = 0.946 was selected as melt and crystal compositions. The dopant
doi:10.1117/12.574084 fatcat:sklii4lmlnd67hoq2fqn732ifi