Fabrication of Artificial Anisotoropic Media and Its Applications to Optical Devices and Memories

人工各向异性介质的制备及其在光学器件和存储器中的应用

• 批准号: 14550341
• 负责人: BABA Kazutaka
• 金额: $ 2.24万
• 依托单位: Sendai National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550341/
• 关键词: nanocluster; artificial anisotropic media; periodic dielectric multilayer; polarizing splitter; optical memory; write-once memory; multi-wavelength; multi-polarizing; 偏光; 傾斜微粒子; ポーラス構造誘電体薄膜; 偏光子

Artificial optical anisotropic media, including periodic dielectric multilayers, porous dielectric films, columnar dielectric films, and metal island films have been investigated for optical devices and optical memories.In the periodic dielectric multilayers, the effective refractive index for TE polarization is higher than that for TM polarization. On the other hand, in porous dielectric films and columnar dielectric films, the effective refractive index for TE polarization is lower. In this work, novel waveguide polarizers and polarization splitters using those have been proposed and investigated for glass integrated optics. We have successfully shown that the artificial optical anisotoropic media using nano-structures would be useful for integrated optics as desirable birefringence can be induced.In addition, we have investigated the metal island films, composed of metal nanoclusters of high density, for CD-R type optical data storage media. The metal island films exhibit anomalous resonance-type absorption in the visible and near-infrared regions. As the metal island films not only have large absorption but also high reflectance at the resonance wavelength, these could be used instead of absorption and reflection layers of the CD-R. In this work, we have successfully demonstrated preliminary experiments for CD-R type optical data storage media using metal island films. It has been experimentally confirmed that clear marks were formed by focused laser beam irradiation. We also discussed the application of the proposed optical data storage media using metal island films to the multiwavelength and multi-polarization optical disks.

已经研究了人造光学各向异性媒体，包括定期电介质多层，多孔介电膜，柱状电介质膜和金属岛膜的光学设备和光学记忆。在定期介电多层中，TE极发射器的有效折射率比TM极化的有效折射率更高。另一方面，在多孔介电膜和柱状电介质膜中，有效的TE极化折射率较低。在这项工作中，已经提出并研究了使用这些新型波导极化器和极化分离器，并研究了玻璃整合光学器件。我们已经成功地表明，使用纳米结构的人工光学媒介培养基可用于集成光学器件，因为可以诱导所需的双折射。而且，我们研究了由高密度的金属纳米簇组成的金属岛膜，用于CD-R类型的光学数据存储媒体。金属岛膜在可见的和近红外区域表现出异常的共振型吸收。由于金属岛的膜不仅具有较大的吸收，而且在共振波长处具有高反射率，因此可以代替CD-R的吸收和反射层。在这项工作中，我们成功地展示了使用金属岛膜的CD-R型光学数据存储介质的初步实验。经过实验证实，通过聚焦激光束照射形成了清晰的标记。我们还使用金属岛膜在多波长和多极化光盘上讨论了所提出的光学数据存储介质的应用。

项目成果

K.Baba: "Artificial birefringent media using nano-structures and their application to integrated optical devices"Research Report of Sendai National College of Technology. 32. 93-98 (2002)

K.Baba：“利用纳米结构的人工双折射介质及其在集成光学器件中的应用”仙台国立技术学院的研究报告。

馬場一隆: "ナノ微細構造に基づく人工異方性媒質とその光集積回路への応用"仙台電波高専研究紀要. 32. 93-98 (2002)

马场和隆：“基于纳米结构的人工各向异性介质及其在光学集成电路中的应用”仙台无线电学院研究通报32. 93-98（2002）。

K.Baba: "Waveguide polarizers for integrated optics using artificial birefringent media : design and theoretical characteristics"Proc.Soc.Photo-Opt.instru.Eng.. 4640. 281-288 (2002)

K.Baba：“使用人工双折射介质的集成光学波导偏振器：设计和理论特性”Proc.Soc.Photo-Opt.instru.Eng.. 4640. 281-288 (2002)

K.Baba: "Weguide optical polarization splitter using microprism consisting of dielectric periodic multilayer"Proc.Soc.Photo-Opt.instru.Eng.. (in press).

K.Baba：“我们使用由介电周期性多层组成的微棱镜来引导光学偏振分离器”Proc.Soc.Photo-Opt.instru.Eng..（正在出版）。

K.Baba: "Waveguide polarizers for integrated optics using artificial birefringent media : design and theoretical characteristics"Proc. Soc. Photo-Opt. Instru. Eng.. 4640. 281-288 (2002)

K.Baba：“使用人工双折射介质的集成光学波导偏振器：设计和理论特征”Proc。