Growth and photorefractive properties of In:Fe:LiNbO3 crystals with various [Li]/[Nb] ratios

Abstract In:Fe:LiNbO 3 crystals with various [Li]/[Nb] ratios were grown by the Czochralski method from melts having compositions varying between 48.6 and 58 mol% Li 2 O. The crystal composition and defect structure were analyzed by the UV–Vis and IR spectroscopy. The photorefractive properties of the In:Fe:LiNbO 3 crystals were experimentally studied by using the two-wave coupling method. The results of the two-wave coupling experiments showed that as the [Li]/[Nb] ratio increased, the diffraction efficiency decreased, but the holographic response time and photorefractive sensitivity increased. Among all samples, the dynamic range of the In:Fe:LiNbO 3 crystal with [Li]/[Nb] ratio of 1.2 was the largest (up to 10.22).

[1]  J. Dumas,et al.  Stoechiométrie des monocristaux de métaniobate de lithium , 1968 .

[2]  Jean-Pierre Huignard,et al.  Photorefractive Materials and Their Applications I , 2006 .

[3]  Marvin B. Klein,et al.  Optimal Properties Of Photorefractive Materials For Optical Data Processing , 1983, Photonics West - Lasers and Applications in Science and Engineering.

[4]  Katalin Polgar,et al.  Composition dependence of the ultraviolet absorption edge in lithium niobate , 1997 .

[5]  M. Wöhlecke,et al.  Relation of the photorefraction and optical-damage resistance to the intrinsic defect structure in LiNbO3 crystals , 2003 .

[6]  R. Neurgaonkar,et al.  Photorefractive materials for nonvolatile volume holographic data storage , 1998, Science.

[7]  W. Phillips,et al.  Volume Phase Holographic Storage In Ferroelectric Crystals , 1978 .

[8]  M. Wöhlecke,et al.  Defects in LiNbO3—I. experimental aspects , 1991 .

[9]  Ernesto Dieguez,et al.  Determination of the Li/Nb ratio in LiNbO3 crystals grown by Czochralski method with K2O added to the melt , 2000 .

[10]  Demetri Psaltis,et al.  Photorefractive properties of lithium niobate crystals doped with manganese , 2003 .

[11]  T. R. Volk,et al.  Optical Damage Resistant Impurities in Lithium Niobate , 1994, Photorefractive Materials, Effects, and Devices.

[12]  Kenji Kitamura,et al.  Increased optical damage resistance in Sc2O3‐doped LiNbO3 , 1992 .

[13]  Y. Kong,et al.  New doped lithium niobate crystal with high resistance to photorefraction—LiNbO3:In , 1995 .

[14]  M. Minakata,et al.  Optical damage resistance and crystal quality of LiNbO3 single crystals with various [Li]/[Nb] ratios , 1992 .

[15]  Defect structure and optical damage resistance of Zn:Fe:LiNbO3 crystals , 2003 .

[16]  P. Siffert,et al.  On the lattice site of trivalent dopants and the structure of Mg2+-OH--M3+ defects in LiNbO3:Mg crystals , 1993 .

[17]  D Psaltis,et al.  System metric for holographic memory systems. , 1996, Optics letters.

[18]  H. Kogelnik.  Coupled wave theory for thick hologram gratings , 1969 .

[19]  V. I. Pryalkin,et al.  Optical-damage-resistant LiNbO(3):Zn crystal. , 1990, Optics letters.