Title:
MAGNETO-OPTICAL MULTILAYERED FILM AND MAGNETO-OPTICAL BODY
Document Type and Number:
Japanese Patent JP3245702
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a high optical enhancement effect by laminating magnetic layers and dielectric layers with irregularly and periodically in layer thickness to constitute a magneto-optical multilayered film.
SOLUTION: The magneto-optical multilayered film 1 used for an optical isolator consists of magnetic layers 11 and dielectric layers 12 alternately deposited. The magnetic layers 11 and dielectric layers 12 are deposited with irregular thicknesses. The light which enters the magneto-optical multilayered film 1 propagates in the depositing direction of layers and outgoes with the polarization plane rotated by 45 degrees (whole rotation angle). Thereby, a significant enhancement effect is obtd. and a larger magneto-optical effect can be obtd. with a thinner magneto-optical multilayered film. The film thickness ratio of the all magnetic layers 11 is <10%, or 15 to 30% or 35 to 50% to the whole film thickness. The film thickness ratio of the all magnetic layers 11 to the whole film thickness is preferably controlled in such a manner that the reflectance of light entering the film shows an opposite peak against increase or decrease in the film thickness ratio.
Inventors:
Mitsuteru Inoue
Toshitaka Fujii
Koji Matsumoto
Ken Tamanoi
Toshitaka Fujii
Koji Matsumoto
Ken Tamanoi
Application Number:
JP21175696A
Publication Date:
January 15, 2002
Filing Date:
August 09, 1996
Export Citation:
Assignee:
富士通株式会社
International Classes:
G02F1/09; C30B29/28; (IPC1-7): G02F1/09; C30B29/28
Other References:
ＩＳＡＭＯＴＯ Ｋ．，ｅｔ．ａｌ．，Ａｎａｌｙｓｉｓ ｏｆ Ｍａｇｎｅｔｏ−Ｏｐｔｉｃａｌ Ｆａｒａｄａｙ Ｅｆｆｅｃｔ ｉｎ Ｄｉｓｃｏｎｔｉｎｕｏｕｓ Ｍａｇｎｅｔｉｃ Ｍｅｄｉｕｍ ｗｉｔｈ Ｐｅｒｉｏｄｉｃ Ａｉｒ Ｇａｐｓ，ＩＥＥＥ ＴＲＡＮＳＡＣＴＩＯＮＳ ＯＮ ＭＡＧＮＥＴＩＣＳ，Ｖｏｌ．３１，Ｎｏ．６，ｐｐ．３２８６−３２８８
ＫＯＨＭＯＴＯ Ｍ，ｅｔ ａｌ．，Ｌｏｃａｌｉｚａｔｉｏｎ ｉｎ Ｏｐｔｉｃｓ：Ｑｕａｓｉｐｅｒｉｏｄｉｃ Ｍｅｄｉａ，ＰＨＹＳＩＣＡＬ ＲＥＶＩＥＷ ＬＥＴＴＥＲＳ，１９８７年６月８日，Ｖｏｌ．５８，Ｎｏ．２３，ｐｐ．２４３６−２４３８
諫本圭史他，不連続磁性媒体の磁気光学ファラデー効果の理論解析，電子情報通信学会技術研究報告，１９９５年２月２３日，Ｖｏｌ．９４，Ｎｏ．５２０，ｐｐ．１５−２２
ＫＯＨＭＯＴＯ Ｍ，ｅｔ ａｌ．，Ｌｏｃａｌｉｚａｔｉｏｎ ｉｎ Ｏｐｔｉｃｓ：Ｑｕａｓｉｐｅｒｉｏｄｉｃ Ｍｅｄｉａ，ＰＨＹＳＩＣＡＬ ＲＥＶＩＥＷ ＬＥＴＴＥＲＳ，１９８７年６月８日，Ｖｏｌ．５８，Ｎｏ．２３，ｐｐ．２４３６−２４３８
諫本圭史他，不連続磁性媒体の磁気光学ファラデー効果の理論解析，電子情報通信学会技術研究報告，１９９５年２月２３日，Ｖｏｌ．９４，Ｎｏ．５２０，ｐｐ．１５−２２
Attorney, Agent or Firm:
Norio Kawano