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Fabrication and Optical Properties of High‐Performance Polycrystalline Nd:YAG Ceramics for Solid‐State Lasers
Author(s) -
Ikesue Akio,
Kinoshita Toshiyuki,
Kamata Kiichiro,
Yoshida Kunio
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08433.x
Subject(s) - materials science , ceramic , crystallite , laser , fabrication , slope efficiency , diode , optoelectronics , grain size , crystal (programming language) , single crystal , oscillation (cell signaling) , optics , laser diode , composite material , metallurgy , fiber laser , crystallography , wavelength , chemistry , medicine , physics , pathology , computer science , programming language , biochemistry , alternative medicine
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.