Enhancement of modulation rate of magneto-optical spatial light modulators with magnetophotonic crystals

被引：0
|
作者：
Takahashi, K. [1 ]
Takagi, H. [2 ]
Shin, K.H. [1 ,3 ]
Uchida, H. [1 ]
Lim, P.B. [1 ]
Inoue, M. [1 ]
机构：
[1] Toyohashi University of Technology, Aichi 441-8580, Japan
[2] Toyota National College of Technology, Aichi 471-8525, Japan
[3] Kyungsung University, Pusan 608-736, Korea, Republic of
来源：
Journal of Applied Physics | 2007年 / 101卷 / 09期
关键词：
Thin-film-type magneto-optical spatial light modulator has been developed by combining one-dimensional magnetophotonic crystal (MPC) and micropatterned drive lines. The use of MPC is expected to be effective because the apparent Faraday effect; which is directly proportional to pixel contrast; is largely enhanced by the light localization of light in the vicinity of the magnetic defect in magnetophotonic crystal. The magnetophotonic crystal had a multilayer structure of (Ta2 O5 Si O2) k Bi: yttrium iron garnet (Si O2 Ta2 O5) k formed on a glass substrate; where k is the repetition number and one of optimization parameters in this study. The transmittance T decreased with an increase of k; while Faraday rotation θF increased; indicating that the enhancement of light modulation rate would be achieved by optimizing the figure of merit F defined by FT sin 2 θF. At k=6; the maximum F=8.8 was obtained; which is about 20 times larger than that of single layer structure. © 2007 American Institute of Physics;
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Conference article (CA)
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