Optical and holographic properties of Fe plus Mn co-doped Bi4Ge3O12 crystals

被引：8

作者：

Marinova, Vera

Petrova, Dimitrina

Lin, Shiuan Huei

Hsu, Ken Yuh

机构：

[1] Bulgarian Acad Sci, Cent Lab Opt Storage & Proc Informat, BU-1113 Sofia, Bulgaria

[2] South West Univ, Dept Phys, Blagoevgrad 2700, Bulgaria

[3] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30050, Taiwan

[4] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 30050, Taiwan

来源：

OPTICS COMMUNICATIONS | 2008年 / 281卷 / 01期

关键词：

D O I：

10.1016/j.optcom.2007.09.003

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The effect of iron and manganese co-doping on the light-induced, dark- and photoconductivity and holographic properties of Bi4Ge3O12 crystals in comparison with Fe- and Mn-single doping is studied. Fe+Mn co-doped crystals exhibited strong photochromic effect at room temperature, the photochromic effect being fully reversible by thermal annealing. The observed light-induced absorption changes and non-linear dependence of photoconductivity on light intensities indicate deep and shallow photoactive levels contribution to the charge transport mechanism of Fe+Mn co-doped BGO. Holographic gratings are successfully recorded at different wavelengths and a possibility to extend the photorefractive sensitivity into the red spectral range is demonstrated. It is found furthermore that Fe+Mn-doping combination leads to faster response time during holographic recording, especially after a preliminary exposure with ultraviolet light, in comparison with Fe- and Mn-single doping. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：37 / 43

页数：7

共 21 条

[1] Two-center holographic recording [J].