Fabrication and Optical Properties of High‐Performance Polycrystalline Nd:YAG Ceramics for Solid‐State Lasers
Akio IkesueMember, American Ceramic SocietyToshiyuki KinoshitaKiichiro KamataDepartment of Material Science and Technology, Nagaoka University of Technology, Nagaoka City 904–21, JapanKunio YoshidaInstitute of Laser Engineering, Osaka Institute of Technology, Osaka City 535, Japan
1995en
ABI
Annotatsiya
Transparent polycrystalline YAG with nearly the same optical characteristics as those of a single crystal were fabricated by a solid‐state reaction method using high‐purity powders (>99.99 wt% purity). The average grain size and relative density of the 1.1 at.% Nd:YAG ceramics obtained were about 50 μm and 99.98%, respectively. An oscillation experiment was performed on a cw laser by the diode laser excitation system using the fabricated ceramics. The experimental results indicated an oscillation threshold and a slope efficiency of 309 mW and 28%, respectively. These values were equivalent or superior to those of the 0.9 at.% Nd:YAG single crystal fabricated by the Czochralski method.
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