Davelopment of Nonlinear Optical Frequency-Conversion Micro Devices Using Micro-Fabrication Technique for Organic Crystals

利用有机晶体微加工技术开发非线性光学变频微型器件

• 批准号: 04555012
• 负责人: ITO Ryoichi
• 金额: $ 12.93万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04555012/
• 关键词: Nonlinear Optics; Organic Crystal; Second-Harmonic Generation; Frequency Conversion; Waveguiding Device; Micro Fabrication; Inorganic Resist; Lithography; 光第2高調波発生; リソグラフィ-

1.Device DesignWe have theoretically analyzed a number of frequency-conversion devices, and established a guideline toward highly efficient devices.We have shown that we have to use quasi-phase-matching scheme in frequencyconversion devices in order to fully utilize high optical nonlinearities of organic molecules and crystals.2.Device Fabrication TechnologyA new fabrication method of micro structures of organic crystals has been developed.This consists of the use of an inorganic photoresist HPA and O_2-RIBE technique.This new technology makes it possible to fabricate organic-crystalline waveguiding structures.3.Proposal of New DevicesWe have proposed a new efficient SHG device based on quasi-phase-matching for cavity-enhanced fundamental wave. We have also proposed quasi-phase-matching SHG device based on aperiodic gratings optimized by simulated annealing.By using this technique, we have shown that we can obtain high efficiency as well as large phase-matching tolerance simultaneously.These two device architectures will be suitable for high performance SHG devices made of organic crystals.Based on the research results, fabrication of new organic crystalline waveguiding SHG devices is now underway.

1.器件设计我们从理论上分析了多种变频器件，并建立了高效器件的指导方针。我们证明，我们必须在变频器件中使用准相位匹配方案，以充分利用有机分子和晶体的高光学非线性。2.器件制造技术开发了一种新的有机晶体微结构的制造方法。该方法包括： 无机光刻胶HPA和O_2-RIBE技术的使用。这项新技术使得制造有机晶体波导结构成为可能。3.新器件的提出我们提出了一种基于空腔增强基波准相位匹配的新型高效SHG器件。我们还提出了基于模拟退火优化的非周期光栅的准相位匹配SHG器件。通过使用该技术，我们证明了我们可以同时获得高效率和大的相位匹配容差。这两种器件架构将适用于由有机晶体制成的高性能SHG器件。基于研究成果，新型有机晶体波导SHG器件的制造正在进行中。

项目成果

T. Kondo: "Cerenkov-Type Optical Second-Harmonic Generation in Organic-Crystalline Channel Waveguides" Int. J. Nonlinear Opt. Phys.1. 367-392 (1992)

T. Kondo：“有机晶体通道波导中的切伦科夫型光学二次谐波产生” Int。

T.Kondo: "Linear and Nonlinear Optical Properties of Racemic (±)2-(α-Methylbenzylamino)-5-Nitrpyridine Single Crystals" Opt.Rev.2(掲載予定). (1995)

T.Kondo：“外消旋 (±)2-(α-甲基苄氨基)-5-硝基吡啶单晶的线性和非线性光学性质”Opt.Rev.2（待出版）。

H.Takahashi, M.Ohashi, T.Kondo, N.Ogasawara, Y.Shiraki and R.Ito: "New Semiconductor Second-Harmonic Generator Based on Quasi-Phase-Matching for Cavity-Enhanced Fundamental Standing Wave" Jpn.J.Appl.Phys.33. L1456-L1458 (1994)

H.Takahashi、M.Ohashi、T.Kondo、N.Ogasawara、Y.Shiraki 和 R.Ito：“基于空腔增强基波驻波准相位匹配的新型半导体二次谐波发生器”Jpn.J。

N.Hashizume, T.Kondo, T.Onda, N.Ogasawara, S.Umegaki and R.Ito: ""Theoretical Analysis of the Cerenkov-Type Optical Second-Harmonic Generation in Slab Waveguides"" IEEE J.Quantum Electron.28. 1798-1815 (1992)

N.Hashizume、T.Kondo、T.Onda、N.Ogasawara、S.Umegaki 和 R.Ito：“板状波导中切伦科夫型光学二次谐波产生的理论分析”IEEE J.Quantum Electron.28

T.Uemiya, N.Uenishi, S.Okamoto, K.Chikuma, K.Kumata, T.Kondo, R.Ito and S.Umegaki: ""Frequency Doubling of a Nd : YAG Laser Using a Crystal-Cored Fiber of an Organic 4- (N,N-Dimethylamino) -3-acetamidonitrobenzene"" Appl.Opt.31. 7581-7586 (1992)

T.Uemiya、N.Uenishi、S.Okamoto、K.Chikuma、K.Kumata、T.Kondo、R.Ito 和 S.Umegaki：“使用晶体光纤的 Nd : YAG 激光器倍频”