PREPARATION OF MICROSPHERES FOR OPTICAL CAVITY STRUCTUTRE AND THEIR APPLICATIONS

光腔结构微球的制备及其应用

• 批准号: 12555246
• 负责人: SHIBATA Shuichi
• 金额: $ 7.17万
• 依托单位: TOKYO INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555246/
• 关键词: Microsphere; Spherical Optical Cavity; Sol-Gel method; Vibrating Orifice Technique; Hybrid Material; Optical Resonance; Optical Waveguide; Optical Communication; 高屈折率; ソルーゲル法; レーザー色素添加

By the Vibrating Orifice Technique (A cylindrical liquid jet passing through the orifice of 10-20μm in diameter breaks up into equal-sized droplets by mechanical vibration of high frequency), equal-sized hybrid microsphers of several micrometer in diameter were successflly fabricated. These microsphers meet the optical cavity requirements : mono-dispersed and showed highly transparent and good sphricity.The following achievements were accomplished.(A) Lasing was performed in dye-doped microspheres prepared from phenyltriethoxy silane as a starting material. Most stable conditions of lasing were clarified : dye content and excitation laser power. Dyes were Rhodamine 6G, DCM and Pyridine 1. After 240,000 pulse shot (about 7 hour-irradiation), the initial lasing power intensity decreased to 50%.(B) Encapsulation of light need high relative refractive index >1.5 between microsphere here and the surrounding media. Thus the microsphere itself is required index >2.0. Hybrid microspheres of refractive index >2.0 was developed(C) Optical waveguide of hybrid materials were made by the photolithography technique and the excitation of microsphere was performed using the waveguide.

利用振动孔技术（通过直径为10 ~ 20μm的孔的圆柱形液体射流通过高频机械振动破碎成等尺寸的液滴），成功制备了直径为几微米的等尺寸混合微球。这些微球满足光学腔体的要求：单分散，具有高透明度和良好的圆度。取得了以下成绩。(A)以苯三乙氧基硅烷为起始材料制备染料掺杂微球进行激光。阐明了激光的最稳定条件：染料含量和激发激光功率。染料为罗丹明6G、DCM和吡啶1。经过24万次脉冲照射（约7小时）后，初始激光功率强度下降到50%。(B)光的封装需要此处微球与周围介质的相对折射率>1.5高。因此，微球本身需要索引>2.0。研制了折射率为>2.0的混合微球(C)利用光刻技术制备了混合材料的光波导，并利用该波导对微球进行激发。

项目成果

S.Shibata, A.Araya, T.Yano, M.Yamane: "Photostability of the Laser Emission from Dye-Doped Spherical Particles"SPIE-The International Society for Optical Engineering. Vol.4804. 44-51 (2002)

S.Shibata、A.Araya、T.Yano、M.Yamane：“染料掺杂球形颗粒激光发射的光稳定性”SPIE-国际光学工程学会。

柴田, 顕谷, 多田, 矢野, 山根: "光共振器用微小球の作製"日本マイクログラビティ応用学会誌. 17. 166-171 (2000)

Shibata、Akiya、Tada、Yano、Yamane：“光学谐振器微球的制备”日本微重力应用学会杂志 17. 166-171 (2000)。

S.Shibata, A.Araya et al.: "Photostability of the Laser Emission from Dye-Doped Spherical Particles"SPIE, Sol-Gel Optics VI(AM427). (2002)

S.Shibata、A.Araya 等人：“染料掺杂球形颗粒激光发射的光稳定性”SPIE，溶胶-凝胶光学 VI (AM427)。

柴田修一: "ハイブリッド材料からなる光共振器用微小球"Ceramic Data Book2001. 29. 250-253 (2001)

Shuichi Shibata：“混合材料制成的光学谐振器微球”《陶瓷数据手册》2001 年 29. 250-253 (2001)。

Y. Arai, T. Yano and S. Shibata: "High Regrective-Index Microspheres of Optical Cavity Structure"Appl. Phys. Lett.. 82・19. 3173-3175 (2003)

Y. Arai、T. Yano 和 S. Shibata：“光学腔结构的高折射率微球”Appl. 82・19（2003）