TY - JOUR
T1 - Formation of langasite-type crystals in corresponding glasses and their second-order optical nonlinearities
AU - Takahashi, Yoshihiro
AU - Saitoh, Kenta
AU - Benino, Yasuhiko
AU - Fujiwara, Takumi
AU - Komatsu, Takayuki
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2004/1
Y1 - 2004/1
N2 - Second-order optical nonlinearities for the langasite-type phases obtained by crystallization of corresponding glasses are clarified for the first time. It is confirmed that most of langasite-type crystalline phases can be formed by crystallization in the corresponding glasses without introducting of any impurity phases, e.g., the glasses with the stoichiometric composition of Ba3Ga2Ge4O14, BaGa4La2Ge2O14, Pb3Ga2Ge4O14, etc. We find that Pb3Ga2Ge4O14 and Pb3AlGaGe4O14 phases exhibited strong second-harmonic intensities of approximately 100 times as large as α-quartz by means of a powder technique, demonstrating that those langasite-type crystals are excellent nonlinear optical materials. It is also suggested that the octahedral site is one of keys for second-order optical nonlinearity in langasite-type crystals.
AB - Second-order optical nonlinearities for the langasite-type phases obtained by crystallization of corresponding glasses are clarified for the first time. It is confirmed that most of langasite-type crystalline phases can be formed by crystallization in the corresponding glasses without introducting of any impurity phases, e.g., the glasses with the stoichiometric composition of Ba3Ga2Ge4O14, BaGa4La2Ge2O14, Pb3Ga2Ge4O14, etc. We find that Pb3Ga2Ge4O14 and Pb3AlGaGe4O14 phases exhibited strong second-harmonic intensities of approximately 100 times as large as α-quartz by means of a powder technique, demonstrating that those langasite-type crystals are excellent nonlinear optical materials. It is also suggested that the octahedral site is one of keys for second-order optical nonlinearity in langasite-type crystals.
KW - Crystallization
KW - Glass
KW - Langasite-type crystal
KW - Second-order optical nonlinearity
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U2 - 10.2109/jcersj.112.61
DO - 10.2109/jcersj.112.61
M3 - Article
AN - SCOPUS:1442312654
VL - 112
SP - 61
EP - 64
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1301
ER -