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Development of Integrated Short-Wavelength Light Sources for Information Processin

用于信息处理的集成短波长光源的开发

基本信息

批准号：
06555014
负责人：
NISHIHARA Hiroshi
金额：
$ 9.73万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555014/
关键词：
Second-Harmonic Generation Nonlinear Optics Integrated Optics Optical Waveguide 光第2高調波発生

项目摘要

This project aimed at developing integrated short-wavelength light sources, suitable for application to information processing, using waveguide-type optical second-harmonic generation (SHG) devices. The obtained results are summarized as follows :1. Theoretical analysis was made on LiNbO_3 waveguide quasi-phasematched (QPM) SHG devices, and light source systems consisting of the SHG devices and semiconductor lasers.2. Experimental work was performed on fabrication of periodic ferroelectric-domain inversion structure by applying electric voltage.3. QPM-SHG devices for blue light generation by frequency doubling of semiconductor laser light were designed and fabricated. A record high normalized conversion efficiency of 150%W,with maximum output power as large as 5mW were accomplishted.4. Theoretical analysis on resonant-type waveguid QPM-SHG devices was made, and up to 8 times enhancement of conversion efficiency was accomplished in a fabricated prototype device.5. Fabrication technique of periodic ferroelectric-domain inversion structure of interaction length as large as 10mm was established for accomplishment of higher normalized efficiency of 1000%W.6. QPM-SHG devices for ultra-violet light generation were designed and fabricated. Generation of UV light of 383nm wavelength and 1mW power with a normalized efficiency of 70%W was accomplished.

本项目的目标是利用波导型光学二次谐波(SHG)器件研制出适用于信息处理的集成短波长光源。主要研究结果如下：1.对LiNbO_3波导准相位匹配倍频器件以及由倍频器件和半导体激光器组成的光源系统进行了理论分析。对施加外加电压制备周期性铁电畴反转结构进行了实验研究。设计并制作了用于半导体激光倍频产生蓝光的准相位调制倍频器件。获得了150%W的归一化转换效率，最大输出功率高达5 mW。对谐振型光波导准相位倍频器件进行了理论分析，在制作的原型器件上实现了高达8倍的转换效率提高。为了获得1000%W的较高归一化效率，建立了相互作用长度为10 mm的周期性铁电畴反转结构的制备工艺。设计并制作了用于紫外光产生的准相位倍频器件。实现了波长383 nm、功率1 mW的紫外光输出，归一化效率为70%W。