Periodic poling with short period for thin film lithium niobate waveguides

Mohammadreza Younesi, Pawan Kumar, Badrudin Jakob Stanicki, Reinhard Geiss, Wei Kun Chang, Yen Hung Chen, Frank Setzpfandt, Thomas Pertsch

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Lithium niobate (LN) is a favourable material for many applications, especially in integrated optics, due to its excellent electro-optic, acousto-optic, and nonlinear optic properties. One promising application of LN is second-harmonic generation (SHG). For enhancing the efficiency of SHG, phase matching between the interacting waves is needed, which is often realized by employing quasi-phase matching (QPM) [1]. QPM is typically realized by periodic poling of LN [2,3], i.e. the periodic flipping of the crystal orientation. The needed period is determined by the wavelengths as well as by the wave vectors of the fundamental- and the second-harmonic waves (FW and SH, respectively). For the case of backward SHG with a fundamental wavelength of 1.55 µm, where the SH wave travels in the opposite direction to the FW, typically sub-micrometer periods of the poled LN are required [4].

Original languageEnglish
Title of host publicationThe European Conference on Lasers and Electro-Optics, CLEO_Europe_2019
PublisherOSA - The Optical Society
ISBN (Electronic)9781557528209
StatePublished - 2019
EventThe European Conference on Lasers and Electro-Optics, CLEO_Europe_2019 - Munich, Germany
Duration: 23 Jun 201927 Jun 2019

Publication series

NameOptics InfoBase Conference Papers
VolumePart F140-CLEO_Europe 2019

Conference

ConferenceThe European Conference on Lasers and Electro-Optics, CLEO_Europe_2019
Country/TerritoryGermany
CityMunich
Period23/06/1927/06/19

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