Creation of periodical domain structure by local polarization reversal in planar waveguide produced by soft proton exchange in LiNbO3

Autor: Evgeniy Savelyev, Andrey Akhmatkhanov, Boris Slautin, Hervé Tronche, Florent Doutre, Tommaso Lunghi, Pascal Baldi, Vladimir Shur

Publikováno v: Journal of Advanced Dielectrics, Vol 13, Iss 06 (2023)

The paper presents the results of an experimental study of the local polarization reversal and creation of domains by a biased tip of scanning probe microscope (SPM) in lithium niobate single crystals of congruent composition with a surface layer mod

Externí odkaz: https://doaj.org/article/003bfb39e7804e21bf32e42c95755937

Nonlinear Characterization of Waveguide Index Profile: Application to Soft-Proton-Exchange in LiNbO$_3$

Autor: Vladimir Ya. Shur, M. M. Neradovskiy, Hervé Tronche, Marc De Micheli, Dmitry Chezganov, Florent Doutre, P. Baldi, Evgeniy Vlasov, Tommaso Lunghi, E. A. Pashnina

Publikováno v: Journal of Lightwave Technology
Journal of Lightwave Technology, Institute of Electrical and Electronics Engineers (IEEE)/Optical Society of America(OSA), 2021, 39 (14), pp.4695-4699. ⟨10.1109/JLT.2021.3077637⟩
J Lightwave Technol

International audience; In integrated photonics, the precise knowledge of the waveguides refractive index profile is mandatory for the modeling of photonic chips and therefore implementing innovative circuits. Usual index profile determination relies

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b912a8e6e8055176b4c6a930282f9459
https://hal.archives-ouvertes.fr/hal-03390614

Lithium niobate waveguides with high-index contrast and preserved nonlinearity fabricated by High Vacuum Vapor-phase Proton Exchange

Autor: Sorin Tascu, Hervé Tronche, A.P. Rambu, Florent Doutre, Alin Marian Apetrei, Vasile Tiron, Marc De Micheli

Publikováno v: Photonics Research
Photonics Research, OSA Publishing, 2020, 8 (1), pp.8. ⟨10.1364/PRJ.8.000008⟩

Highly confining waveguides ( Δ n e > 0.1 ) without a degraded nonlinear coefficient and low propagation losses have been fabricated in lithium niobate (LN) by a new process that we called high vacuum vapor-phase proton exchange (HiVac-VPE). Index c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4159052aa8ebb495bad77b7a2448389c
http://arxiv.org/abs/1909.13530

Modal phase-matching in graded index waveguides: unsensitive and efficient phase matched configurations in χ2 based nonlinear integrated optics devices

Autor: Hervé Tronche, Tommaso Lunghi, M. M. Neradovskiy, Marc De Micheli, Elizaveta Neradovskaia, Florent Doutre, P. Baldi, Pierre Aschieri

Publikováno v: Laser Congress 2019 (ASSL, LAC, LS&C).

We show numerically and experimentally that choosing properly the shape of the index profile of the waveguide and using high order modes for the harmonic, makes the SHG process more efficient and unsensitive to waveguide parameters variations.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1b640c5a4d4c5ca28f2d85c5992ca120
https://doi.org/10.1364/assl.2019.jw2a.36

Analysis of High-Index Contrast Lithium Niobate Waveguides Fabricated by High Vacuum Proton Exchange

Autor: Hervé Tronche, Sorin Tascu, Alin Marian Apetrei, A.P. Rambu, Florent Doutre, Marc De Micheli

Publikováno v: Journal of Lightwave Technology
Journal of Lightwave Technology, Institute of Electrical and Electronics Engineers (IEEE)/Optical Society of America(OSA), 2018, pp.1-1. ⟨10.1109/JLT.2018.2822317⟩

International audience; —High-index contrast waveguides fabricated with precise control and reproducibility are of high interest for nonlinear and/or electro-optical highly efficient and compact devices for quantum and classical optical data proces

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::334e6b53fe2a4ce97699114f6e6bbbc2
https://hal.archives-ouvertes.fr/hal-01784926/file/HiVacPE_HAL.pdf