]. G. Bergman, The electrical conductivity of LiNbO3, Solid State Communications, vol.6, issue.2, p.77, 1968.
DOI : 10.1016/0038-1098(68)90004-5

A. M. Glass and G. Peterson, J Negran Laser induced damage in optic materials, Ntl Bur. Std. Special Edition, 1972.

]. R. Holman-78 and . Holman, Processing of Crystalline Ceramics, Plenum), p.343, 1978.

F. Jaque, J. Garcia-solé, E. Camarillo, F. J. I-opez, H. Murietta et al., Imbusch The Second International School on Excited States of Transition Elements (V/orld Scientific) 1991 , [Jaque 93, et J. Hernandez A. Phys Rev B, vol.47, p.9, 1993.

]. P. Jorgensen and R. Bartlett, High temperature transport processes in lithium niobate, Journal of Physics and Chemistry of Solids, vol.30, issue.12, p.2639, 1969.
DOI : 10.1016/0022-3697(69)90037-7

K. Kitamura, J. Yamamoto, N. Iyi, S. Kimura, and T. Hayashi, Stoichiometric LiNbO3 single crystal growth by double crucible Czochralski method using automatic powder supply system, Journal of Crystal Growth, vol.116, issue.3-4, p.327, 1992.
DOI : 10.1016/0022-0248(92)90640-5

S. Kojima, Composition Variation of Optical Phonon Damping in Lithium Niobate Crystals, Japanese Journal of Applied Physics, vol.32, issue.Part 1, No. 9B, p.4373, 1993.
DOI : 10.1143/JJAP.32.4373

]. P. Macfarlane-95, K. Macfarlane, J. F. Holliday, and . Nicholls, using fluorescence line narrowing, Journal of Physics: Condensed Matter, vol.7, issue.49, p.9643, 1995.
DOI : 10.1088/0953-8984/7/49/026

F. Gather, S. Jermann, U. Klauer, E. M. Schlarb, A. Wôhlecke et al., A : Solids Surf, p.56, 1993.

]. G. Malovichko-93b, V. G. Malovichko, O. F. Grachev, B. Schirmer, and . Faust, centres in stoichiometric lithium niobate crystals, Journal of Physics: Condensed Matter, vol.5, issue.23, p.3971, 1993.
DOI : 10.1088/0953-8984/5/23/024

K. Polgar, L. Kovacs, I. Fôldvari, I. Cravero, K. Polgar et al., Solid State Comm, Szaller, J. Cryst. Growth Qiu J. Phys. Condens. : Matter, vol.59, issue.5, p.2041, 1986.

O. F. Schirmer, O. Thiemann, and E. M. Wôhlecke, Defects in LiNbO3???I. experimental aspects, Journal of Physics and Chemistry of Solids, vol.52, issue.1, p.185, 1991.
DOI : 10.1016/0022-3697(91)90064-7

L. O. Svaasand, M. Eriksrud, A. P. Grande, F. Mo, and J. , Crystal Growth 18 (19'73) r79 [Svaasand 74, p.230, 1974.

V. Trepakov, S. Skvortsov, C. Kapphan, and L. Fischer, Jastrabik et I. Gregora 'i, of the Korean Phys. Soc, pp.32-1140, 1998.

]. E. Vartanyan-85 and . Vartanyan, Abstract of the AII-Union Conference on Crystal Growth