Periodic domain patterning by electron beam of proton exchanged waveguides in lithium niobate

被引：26

作者：

Chezganov, D. S. ^{[1
,2
]}

Vlasov, E. O. ^{[1
]}

Neradovskiy, M. M. ^{[1
]}

Gimadeeva, L. V. ^{[1
]}

Neradovskaya, E. A. ^{[1
]}

Chuvakova, M. A. ^{[1
]}

Tronche, H. ^{[3
]}

Doutre, F. ^{[3
]}

Baldi, P. ^{[3
]}

De Micheli, M. P. ^{[3
]}

Shur, V. Ya. ^{[1
,2
]}

机构：

[1] Ural Fed Univ, Inst Nat Sci, Ekaterinburg 620000, Russia

[2] Labfer Ltd, Ekaterinburg 620014, Russia

[3] Univ Nice Sophia Antipolis, Phys Mat Condensee Lab, F-06100 Nice, France

来源：

APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 19期

关键词：

2ND-HARMONIC GENERATION; FERROELECTRIC DOMAINS; SHG DEVICE; LINBO3; FABRICATION; INVERSION; CRYSTALS; IRRADIATION; LITAO3; KINETICS;

D O I：

10.1063/1.4949360

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Formation of domain structure by electron beam irradiation in congruent lithium niobate covered by surface dielectric layer with planar and channel waveguides produced by Soft Proton Exchange (SPE) process has been studied. Formation of domains with arbitrary shapes as a result of discrete switching has been revealed. The fact was attributed to ineffective screening of depolarization field in the crystals with a surface layer modified by SPE process. The dependences of the domain sizes on the dose and the distance between irradiated areas have been revealed. Finally, we have demonstrated that electron beam irradiation of lithium niobate crystals with surface resist layer can produce high quality periodical domain patterns after channel waveguide fabrication. Second harmonic generation with normalized nonlinear conversion efficiency up to 48%/(W cm(2)) has been achieved in such waveguides. Published by AIP Publishing.

引用

页数：5

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