Cu2+ ion in-diffusion in congruent LiNbO3 single crystals

被引：11
作者：
Kar, S. [1 ]
Bartwal, K. S. [1 ]
机构：
[1] Raja Ramanna Ctr Adv Technol, Laser Mat Dev & Devices Div, Indore 452 013, Madhya Pradesh, India
来源：
MATERIALS LETTERS | 2008年 / 62卷 / 24期
关键词：
lithium niobate; diffusion; Czochralski; absorption; activation energy;
D O I：
10.1016/j.matlet.2008.05.031
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Congruent LiNbO3 (LN) crystals were grown by Czochralski technique. Thermal in-diffusion of transition metal ion Cu2+ into crystal wafers was performed at various temperatures. The absorption peaks in transmission spectra indicates the Cu2+ ion diffusion in LN crystal wafer. A broad absorption band centered at 948 nm was observed in the absorption spectra due to the vibronic transition associated with Cu2+ centers. The significant red shift in absorption edges indicates the decrease in Li/Nb ratio in Cu in-diffused crystal wafers. Powder XRD of pure and Cu in-diffused LN samples show no structural change during thermal diffusion. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：3934 / 3936
页数：3
相关论文
共 15 条
  • [1] Electro-optic properties in pure LiNbO3 crystals from the congruent to the stoichiometric composition
    Abdi, F
    Aillerie, M
    Bourson, P
    Fontana, MD
    Polgar, K
    [J]. JOURNAL OF APPLIED PHYSICS, 1998, 84 (04) : 2251 - 2254
  • [2] The effect of Cr doping on optical and photoluminescence properties of LiNbO3 crystals
    Bhatt, R
    Kar, S
    Bartwal, KS
    Wadhawan, VK
    [J]. SOLID STATE COMMUNICATIONS, 2003, 127 (06) : 457 - 462
  • [3] INFRARED HOLOGRAPHIC RECORDING IN LINBO3 - CU
    BUSE, K
    JERMANN, F
    KRATZIG, E
    [J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1994, 58 (03): : 191 - 195
  • [4] Light-induced charge transport processes in photorefractive crystals .1. Models and experimental methods
    Buse, K
    [J]. APPLIED PHYSICS B-LASERS AND OPTICS, 1997, 64 (03): : 273 - 291
  • [5] Kaczmarski E B, 1998, Commun Dis Public Health, V1, P54
  • [6] Optical behaviour of VTE treated near stoichiornetric LiNbO3 crystals
    Kar, S
    Bhatt, R
    Shukla, V
    Choubey, RK
    Sen, P
    Bartwal, KS
    [J]. SOLID STATE COMMUNICATIONS, 2006, 137 (06) : 283 - 287
  • [7] Optimisation of chromium doping in LiNbO3 single crystals
    Kar, S
    Bhatt, R
    Bartwal, KS
    Wadhawan, VK
    [J]. CRYSTAL RESEARCH AND TECHNOLOGY, 2004, 39 (03) : 230 - 234
  • [8] Kityk IV, 2001, CRYST RES TECHNOL, V36, P577, DOI 10.1002/1521-4079(200107)36:6<577::AID-CRAT577>3.0.CO
  • [9] 2-3
  • [10] Band structure treatment of the influence of nonstoichiometric defects on optical properties in LiNbO3
    Kityk, IV
    Makowska-Janusik, M
    Fontana, MD
    Aillerie, M
    Abdi, F
    [J]. JOURNAL OF APPLIED PHYSICS, 2001, 90 (11) : 5542 - 5549
12