Electron-beam writing fabrication of periodic structure for quasi-phase-matching second-harmonic generation in dimethyl nitrophenyl pyrazole crystal waveguide

被引：1
|
作者：
Nakao, A [1 ]
Fujita, K [1 ]
Suhara, T [1 ]
Nishihara, H [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn, Dept Elect, Suita, Osaka 565, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1998年 / 37卷 / 3A期
关键词：
second-harmonic generation; quasi-phase-matching; periodic structure; electron-beam writing; channel waveguide; organic molecular crystal;
D O I：
10.1143/JJAP.37.845
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We demonstrate fabrication of a periodic structure for quasi-phase-matching (QPM) second-harmonic generation (SHG) in 3,5-dimethyl-1-(4-nitrophenyl) pyrazole (DMNP) by electron-beam (EB) writing. It is found that DMNP loses optical anisotropy and is changed to an amorphous phase by EB irradiation. This indicates that the SHG coefficient is zero at the irradiated part. Periodic structures with 0.5 mu m period and 0.5 duty ratio were obtained in channel waveguides at a dose of approximately 5000 mu C/cm(2).
引用
收藏
页码：845 / 846
页数：2
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