Fabrication and laser performance of highly transparent Nd:YAG ceramics from well-dispersed Nd:Y2O3 nanopowders by freeze-drying

Well-dispersed Nd:Y 2 O 3 powders with uniform particle size of about 60 nm were synthesized from freeze-dried precursors. Highly transparent 2 at.% Nd:YAG ceramics were fabricated from the as-synthesized Nd:Y 2 O 3 powders and commercial Al 2 O 3 powders by vacuum sintering at 1,750 °C for 5 h. Pha...

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Veröffentlicht in:	Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2011-09, Vol.13 (9), p.3853-3860
Hauptverfasser:	Gong, Hua, Zhang, Jian, Tang, Ding-Yuan, Xie, Guo-Qiang, Huang, Hui, Ma, Jan
Format:	Artikel
Sprache:	eng
Schlagworte:	Characterization and Evaluation of Materials Chemistry and Materials Science Inorganic Chemistry Lasers Materials Science Nanotechnology Optical Devices Optics Photonics Physical Chemistry Research Paper
Online-Zugang:	Volltext
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Zusammenfassung:	Well-dispersed Nd:Y 2 O 3 powders with uniform particle size of about 60 nm were synthesized from freeze-dried precursors. Highly transparent 2 at.% Nd:YAG ceramics were fabricated from the as-synthesized Nd:Y 2 O 3 powders and commercial Al 2 O 3 powders by vacuum sintering at 1,750 °C for 5 h. Phase evolution, microstructures, and spectroscopic properties of the Nd:YAG transparent ceramics were investigated. Freeze-drying played an important role in the synthesis of high-quality Nd:Y 2 O 3 nanosized powders, which were essential for the fabrication of highly transparent Nd:YAG ceramics. Optical transmittance of a 3-mm thick sample reached 82% in the wavelength range of 200–900 nm. 5.23 W output power was obtained with 14.3 W diode laser pumping, giving a slope efficiency of 36.5%.
ISSN:	1388-0764 1572-896X
DOI:	10.1007/s11051-011-0336-9