Dynamic performance of magneto-optical Bi-substituted rare-earth iron garnet
The dynamic performances of magneto-optical Bi-substituted rare-earth iron garnet (BIG) under different external magnetic fields and at different frequencies are experimentally studied. The measurement data indicate that the Faraday rotation angle is almost proportional to the external magnetic field when the garnet is far less saturated, while there is good switch performance when it is saturated. The higher the working frequency is, the larger the saturation magnetic field and the phase delay of Faraday angle relative to the field. The saturation fields and the phase delays at different frequencies are measured. The dynamic performance of the BIG determines the performance of BIG-based optical devices. To get the better performance of such devices, the garnets with small dampness and large stiffness should be chosen elaborately.
Changxi Yang：State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084
Enyao Zhang：State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084
Guofan Jin：State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084
备注：This work was in part supported by the National "863" Project of China (No. 2001AA312140) and the Trans-Century Training Programme Foundation for the Talents by the Ministry of Education of China. S. Li's e-mail address is email@example.com
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Shiguang Li, Changxi Yang, Enyao Zhang, Guofan Jin, "Dynamic performance of magneto-optical Bi-substituted rare-earth iron garnet," Chinese Optics Letters 3(1), 38-41 (2005)