Properties of TAG ceramics at room and cryogenic temperatures and performance estimations as a Faraday isolator
Properties of TAG ceramics at room and cryogenic temperatures and performance estimations as a Faraday isolator
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DOI：
10.1364/ome.412938
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发表时间：
2021-02
影响因子：
2.8
通讯作者：
Koichi Hamamoto;Megumi Nishio;S. Tokita;H. Uehara;T. Yanagitani;K. Fujioka;R. Yasuhara;J. Kawanaka
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文献类型：
--
作者：
Koichi Hamamoto;Megumi Nishio;S. Tokita;H. Uehara;T. Yanagitani;K. Fujioka;R. Yasuhara;J. Kawanaka
研究了铽铝石榴石（TAG）陶瓷的材料特性及其作为高平均功率激光器法拉第隔离器材料的特性。我们测量了透光率、吸收系数以及Verdet常数和导热系数的温度依赖性。因此，我们的模型分析表明，TAG陶瓷隔离器可以在30 dB的隔离比下在3 kW的平均激光功率下工作。如果采用气体冷却方案，功率限制会更高。
We investigated material properties of terbium aluminum garnet (TAG) ceramics and its characteristics as a material for a Faraday isolator for high-average power lasers. We measured the transmittance, absorption coefficient, and temperature dependencies of Verdet constant and thermal conductivity. Consequently, our model analysis shows that TAG ceramic isolators can be operated over 3 kW average laser power at a 30 dB isolation ratio. The power limit becomes higher if a gas cooling scheme is applied.