Optical absorption of Co2+ in gel-derived aluminosilicate glass-ceramics

被引：8

作者：

Duan, Xiulan ^{[1
]}

Yuan, Duorong ^{[1
]}

Cheng, Xiufeng ^{[1
]}

Wang, Xinqiang ^{[1
]}

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

来源：

OPTICAL MATERIALS | 2006年 / 28卷 / 10期

关键词：

cobalt; optical properties; glass-ceramics; sol-gel;

D O I：

10.1016/j.optmat.2005.07.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pure and Co2+-doped aluminosilicate gels were prepared by the sol-gel method from two different aluminum salts, aluminum-isopropoxide and aluminum nitrate, and heat-treated at 40-1200 degrees C. Visible and near-infrared (NIR) absorption spectra of the heated samples were studied. When the heat-treatment temperature was 1100 degrees C Co2+-doped aluminosilicate samples, obtained by using aluminum-iso-propoxide, crystallized to Al2O3 nanocrystals and exhibited a broad absorption band in the range of 1200-1600 nm, which is characteristic of tetrahedral Co2+ ions in crystals. The existence of the broad absorption band has allowed us to consider this kind of material as possible candidate for passive Q-switched materials in the NIR region. While the sample prepared from aluminum nitrate was amorphous when heated to 1200 degrees C. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1152 / 1155

页数：4

共 15 条

[1] LUMINESCENCE STUDY OF ZNGA2O4-CO-2+ [J].

ABRITTA, T ;

BLAK, FH .

JOURNAL OF LUMINESCENCE, 1991, 48-9 :558-560

[2] Nanophase glass-ceramics [J].

Beall, GH ;

Pinckney, LR .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1999, 82 (01) :5-16

[3] CO2+YSGG SATURABLE ABSORBER Q-SWITCH FOR INFRARED ERBIUM LASERS [J].

CAMARGO, MB ;

STULTZ, RD ;

BIRNBAUM, M ;

KOKTA, M .

OPTICS LETTERS, 1995, 20 (03) :339-341

[4] Co2+:LiGa5O8 saturable absorber passive Q switch for 1.34 μm Nd3+:YAlO3 and 1.54 μm Er3+:glass lasers [J].

Denisov, IA ;

Demchuk, MI ;

Kuleshov, NV ;

Yumashev, KV .

APPLIED PHYSICS LETTERS, 2000, 77 (16) :2455-2457

[5] Absorption and photoluminescence characteristics of Co2+:MgAl2O4 nanocrystals embedded in sol-gel derived SiO2-based glass [J].

Duan, XL ;

Yuan, DR ;

Cheng, XF ;

Wang, ZM ;

Sun, ZH ;

Luan, CN ;

Xu, D ;

Lv, MK .

OPTICAL MATERIALS, 2004, 25 (01) :65-69

[6] Spectroscopic properties of Co2+: ZnAl2O4 nanocrystals in sol-gel derived glass-ceramics [J].

Duan, XL ;

Yuan, DR ;

Cheng, XF ;

Sun, ZH ;

Sun, HQ ;

Xu, D ;

Lv, MK .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2003, 64 (06) :1021-1025

[7] Sol-gel preparation of Co2+: MgAl2O4 nanocrystals embedded in SiO2-based glass [J].

Duan, XL ;

Yuan, DR ;

Sun, ZH ;

Sun, HQ ;

Luan, CN ;

Wang, XQ ;

Xu, D ;

Lv, MK .

JOURNAL OF CRYSTAL GROWTH, 2003, 252 (1-3) :311-316

[8] Microstructure and crystallisation behaviour of sol-gel derived 1/2SrO-1/2BaO-A1(2)O(3)-2SiO(2) glass-ceramic [J].

Frety, N ;

Taylor, A ;

Lewis, MH .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1996, 195 (1-2) :28-37

[9]

Gao J.-B., 1999, LASER TECHNOLOGY, V23, P381

[10] ABSORPTION AND LUMINESCENCE OF TETRAHEDRAL CO2+ ION IN MGAL2O4 [J].

KULESHOV, NV ;

MIKHAILOV, VP ;

SCHERBITSKY, VG ;

PROKOSHIN, PV ;

YUMASHEV, KV .

JOURNAL OF LUMINESCENCE, 1993, 55 (5-6) :265-269

← 1 2 →