Journal of the Magnetics Society of Japan
Online ISSN : 1882-2932
Print ISSN : 1882-2924
ISSN-L : 1882-2924
Magnetic Recording
Effect of Structure and Properties of Magnetic Material on Diffraction Efficiency of Magnetophotonic Crystal Media for Magnetic Volumetric Holography
Ryosuke IsogaiTaichi GotoHiroyuki TakagiYuichi NakamuraPang Boey LimMitsuteru Inoue
ジャーナル オープンアクセス

2015 年 39 巻 2 号 p. 33-36


  Magnetic holography is a rewritable holographic technology with magnetic media. We reported that magnetophotonic crystal (MPC) media are effective to bring high diffraction efficiency because of an enhancement of Faraday rotation angle and deep magnetic fringes. In this paper, we investigated the MPC media with more than 2-pair Bragg mirrors, which may show much higher efficiency due to their enhanced Faraday rotation angle. However, the intensity of diffracted beam of such the MPCs decreased because of the low transmittance due to the absorption of magnetic material. The relationship between the optical properties of magnetic material in MPCs and the diffraction efficiencies were investigated. High optical efficiencies will be achieved by using the magnetic material with high magneto-optical figure of merit such as bismuth substituted gadolinium iron garnet.

© 2015 The Magnetics Society of Japan