Artificial Periodic Magnetic Structures for Photonic and High Frequency Micro-magnetic Devices -Fabrication and Application of Magnetophotonic Crystals and Magnonic Crystals-

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  • 光・高周波マイクロ磁気デバイスのための人為的周期構造磁性体　　―磁性フォトニック結晶とマグノニック結晶の形成と応用―
  • ヒカリ コウシュウハ マイクロ ジキ デバイス ノ タメ ノ ジンイテキ シュウキ コウゾウ ジセイタイ ジセイ フォトニック ケッショウ ト マグノニック ケッショウ ノ ケイセイ ト オウヨウ
  • Artificial Periodic Magnetic Structures for Photonic and High Frequency Micro-magnetic Devices
  • -Fabrication and Application of Magnetophotonic Crystals and Magnonic Crystals-
  • —磁性フォトニック結晶とマグノニック結晶の形成と応用—

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Abstract

Magnetophotonic crystals and magnonic crystals having periodic structures formed band gaps by interference of waves. A one-dimensional magnetophotonic crystal (1D-MPC), which exhibits optical Tamm state at the interface between magnetic and nonmagnetic photonic crystals (PCs), shows resonant transmissivity and large enhancement of Faraday rotation at the localized mode inside the photonic band gap. We developed two-dimensional magnetophotonic crystals (2D-MPCs) on various types of templates with periodical structures. A 2D-MPC with multi-layers formed on a periodic 1D line resist template has several photonic band gaps with enhanced magneto-optical (MO) effects. In a structural garnet film formed on the opal template, a significant enhancement of MO response was obtained at edges of band gaps. Magnonic crystal with Cu metal strips formed on YIG surface showed high sensitivity of 11400 %/Oe as a magnetic sensor. In addition, enhanced MO effect was demonstrated by plasmonic composite films with noble metal particles and magnetic garnet.

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