Quasi-phase matching in periodically-grooved thin-film lithium niobate waveguides

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)

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Author(s)

  • Xiao Xiong
  • Nicolas Andrade
  • Vivek Venkataraman
  • Xi-Feng Ren
  • Guang-Can Guo
  • Marko Loncar

Detail(s)

Original languageEnglish
Title of host publicationQuantum and Nonlinear Optics IV
EditorsQihuang Gong, Guang-Can Guo, Byoung Seung Ham
PublisherSPIE
ISBN (Electronic)9781510604780
ISBN (Print)9781510604773
Publication statusPublished - 30 Dec 2016
Externally publishedYes

Publication series

NameProceedings of SPIE
Volume10029
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

TitleSPIE/COS Photonics Asia
PlaceChina
CityBeijing
Period12 - 14 October 2016

Abstract

Lithium niobate on insulator platform, with excellent light confinement and second order nonlinearity, has recently attracted great interest for applications towards next-generation wavelength conversion systems that are highly efficient and can be densely fabricated. Here we propose and experimentally demonstrated efficient quasi-phase matched second harmonic generation in periodically-grooved lithium niobate waveguides with sub-micron dimensions. We show that, an additional momentum kick induced by periodically modulating the waveguide width could be used to compensate for the phase mismatch between the two fundamental modes at pump and second harmonic wavelengths. We measure normalized conversion efficiencies as high as 7.0% W-1cm-2 from the fabricated devices. This system is promising for future on-chip quantum wavelength conversion.

Research Area(s)

  • Waveguides, Second-harmonic generation, Lithium niobate, Modulation, Wave propagation, Thin films, Avalanche photodetectors, Phase matching, Scattering, Silicon

Citation Format(s)

Quasi-phase matching in periodically-grooved thin-film lithium niobate waveguides. / Wang, Cheng; Xiong, Xiao; Andrade, Nicolas; Venkataraman, Vivek; Ren, Xi-Feng; Guo, Guang-Can; Loncar, Marko.

Quantum and Nonlinear Optics IV. ed. / Qihuang Gong; Guang-Can Guo; Byoung Seung Ham. SPIE, 2016. 100290Z (Proceedings of SPIE; Vol. 10029).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)