Tb-containing rare earth-aluminum garnet-type ceramic and method for producing same: Fid-Bau Portal

Tb-containing rare earth-aluminum garnet-type ceramic and method for producing same

IKESUE AKIO

Provided is a Tb-containing rare earth-aluminum garnet-type ceramic which has the same degree of Vild constant as a TGG single crystal used in an isolator, has insertion loss and extinction ratio equal to or greater than those of a TGG single crystal, and has little heat release when applied to a high-power laser, and which is less susceptible to thermal lens effect or thermally induced birefringence. The present invention relates to a Tb-containing rare earth-aluminum-based garnet-type ceramic, a method for manufacturing the same, and a separator device using the same, the Tb-containing rare earth-aluminum-based garnet-type ceramic being characterized by containing a Tb-containing rare earth-aluminum-based garnet-type ceramic represented by the compositional formula (TbxRe1-x) 3 (AlySc1-y) 5O12 (wherein Re represents at least one of Y and Lu), a method for manufacturing the same, and a separator device using the same. X is equal to 1.0 to 0.5, and y is equal to 1.0 to 0.6. ), and contains Si and at least one of Ca and Mg.

提供一种含Tb的稀土－铝系石榴石型陶瓷，具有与用于隔离器的TGG单晶同程度的维尔德常数，并具有与TGG单晶同等或其以上的插入损耗和消光比，并且大功率激光器应用时热释放少，难以发生热透镜效应或热致双折射。涉及含Tb的稀土－铝系石榴石型陶瓷及其制造方法、使用该陶瓷的隔离器装置，所述Tb稀土类－铝系石榴石型陶瓷，其特征在于，包含由组成式(TbxRe1－x)3(AlySc1－y)5O12(其中，Re表示Y和Lu的至少一种。x＝1.0～0.5，y＝1.0～0.6。)表示的石榴石型多晶体，并且，含有Ca和Mg的至少一种与Si。

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