Synthesis of Nd{sup 3+}, Cr{sup 3+}-codoped YAG ceramics for high-efficiency solid-state lasers

Journal Article · Fri Sep 01 00:00:00 EDT 1995 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1995.tb08699.x· OSTI ID:116108

Ikesue, Akio ^[1]; Kamata, Kiichiro ^[2]; Yoshida, Kunio ^[3]

---

1. Krosaki Corp., Kitakyushu (Japan). Technical Research Center
2. Nagaoka Univ. of Technology (Japan). Dept. of Materials Science and Technology
3. Osaka Inst. of Tech. (Japan). Inst. of Laser Engineering

Nd,Cr-codoped transparent YAG (Y{sub 3}Al{sub 5}O{sub 12}) ceramics with excellent optical properties were fabricated by a solid-state reaction method using Al{sub 2}O{sub 3}, Y{sub 2}O{sub 3}, Nd{sub 2}O{sub 3}, and Cr{sub 2}O{sub 3} powders of 99.99 wt% purity. The mixed powder compacts were sintered at 1,750 C for 20 h under vacuum and annealed at 1,400 C for 20 h in an oxygen atmosphere. The Nd,Cr-codoped YAG ceramics consisted of grain sizes ranging from 5 to 35 {micro}m and exhibited a pore-free structure. The optical transmittance of a 0.8 at.% Nd,0.4 at.% Cr:YAG ceramic at 1,000 nm was nearly equivalent to that of a 0.8 at.% Nd:YAG single crystal. In addition, the fluorescence intensity of the 0.8 at.% Nd,0.4 at.% Cr:YAG ceramic excited by a xenon lamp was double that of the 0.8 at.% Nd:YAG single crystal.

• Sponsoring Organization: USDOE
• OSTI ID: 116108
• Journal Information: Journal of the American Ceramic Society, Vol. 78, Issue 9; Other Information: PBD: Sep 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
YTTRIUM OXIDES
SINTERING
OPTICAL PROPERTIES
ALUMINIUM OXIDES
NEODYMIUM OXIDES
CHROMIUM OXIDES
LASER MATERIALS
ALKOXIDES
OXALATES
CHLORIDES
PRECIPITATION
PYROLYSIS
DOPED MATERIALS
GRAIN SIZE
MICROSTRUCTURE
SCANNING ELECTRON MICROSCOPY
LIGHT TRANSMISSION
FLUORESCENCE
X-RAY DIFFRACTION