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 cm2) has been achieved in such waveguides.
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9 May 2016
Research Article|
May 10 2016
Periodic domain patterning by electron beam of proton exchanged waveguides in lithium niobate
D. S. Chezganov;
D. S. Chezganov
a)
1Institute of Natural Sciences,
Ural Federal University
, 620000 Ekaterinburg, Russia
2
Labfer Ltd.
, 620014 Ekaterinburg, Russia
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E. O. Vlasov
;
E. O. Vlasov
1Institute of Natural Sciences,
Ural Federal University
, 620000 Ekaterinburg, Russia
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M. M. Neradovskiy;
M. M. Neradovskiy
1Institute of Natural Sciences,
Ural Federal University
, 620000 Ekaterinburg, Russia
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L. V. Gimadeeva;
L. V. Gimadeeva
1Institute of Natural Sciences,
Ural Federal University
, 620000 Ekaterinburg, Russia
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E. A. Neradovskaya;
E. A. Neradovskaya
1Institute of Natural Sciences,
Ural Federal University
, 620000 Ekaterinburg, Russia
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M. A. Chuvakova;
M. A. Chuvakova
1Institute of Natural Sciences,
Ural Federal University
, 620000 Ekaterinburg, Russia
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H. Tronche;
H. Tronche
3Laboratoire de Physique de la Matière Condensée,
University of Nice-Sophia Antipolis
, 06100 Nice, France
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F. Doutre;
F. Doutre
3Laboratoire de Physique de la Matière Condensée,
University of Nice-Sophia Antipolis
, 06100 Nice, France
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P. Baldi;
P. Baldi
3Laboratoire de Physique de la Matière Condensée,
University of Nice-Sophia Antipolis
, 06100 Nice, France
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M. P. De Micheli;
M. P. De Micheli
3Laboratoire de Physique de la Matière Condensée,
University of Nice-Sophia Antipolis
, 06100 Nice, France
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V. Ya. Shur
V. Ya. Shur
1Institute of Natural Sciences,
Ural Federal University
, 620000 Ekaterinburg, Russia
2
Labfer Ltd.
, 620014 Ekaterinburg, Russia
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a)
Author to whom correspondence should be addressed. Electronic mail: [email protected]
Appl. Phys. Lett. 108, 192903 (2016)
Article history
Received:
March 29 2016
Accepted:
May 01 2016
Citation
D. S. Chezganov, E. O. Vlasov, M. M. Neradovskiy, L. V. Gimadeeva, E. A. Neradovskaya, M. A. Chuvakova, H. Tronche, F. Doutre, P. Baldi, M. P. De Micheli, V. Ya. Shur; Periodic domain patterning by electron beam of proton exchanged waveguides in lithium niobate. Appl. Phys. Lett. 9 May 2016; 108 (19): 192903. https://doi.org/10.1063/1.4949360
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