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  • Received: Jun. 24, 2004

    Accepted: --

    Posted: Jun. 6, 2006

    Published Online: Jun. 6, 2006

    The Author Email: Shiguang Li (lishig@mails.tsinghua.edu.cn)

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    Shiguang Li, Changxi Yang, Enyao Zhang, Guofan Jin. Dynamic performance of magneto-optical Bi-substituted rare-earth iron garnet[J]. Chinese Optics Letters, 2005, 3(1): 0138

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Chinese Optics Letters, Vol. 3, Issue 1, 0138 (2005)

Dynamic performance of magneto-optical Bi-substituted rare-earth iron garnet

Shiguang Li*, Changxi Yang, Enyao Zhang, and Guofan Jin

Author Affiliations

  • State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084

Abstract

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.

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