Ultrahigh-efficiency wavelength conversion in nanophotonic periodically poled lithium niobate waveguides

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Carsten LANGROCK
  • Alireza MARANDI
  • Marc JANKOWSKI
  • Mian ZHANG
  • Boris DESIATOV
  • Martin M. FEJER
  • Marko LONČAR

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)1438-1441
Journal / PublicationOptica
Volume5
Issue number11
Online published7 Nov 2018
Publication statusPublished - 20 Nov 2018

Link(s)

Abstract

Periodically poled lithium niobate (PPLN) waveguides are a powerful platform for efficient wavelength conversion. Conventional PPLN converters, however, typically require long device lengths and high pump powers due to the limited nonlinear interaction strength. Here we use a nanostructured PPLN waveguide to demonstrate an ultrahigh normalized efficiency of 2600%/W − cm2 for second-harmonic generation of 1.5 μm radiation, more than 20 times higher than that in state-of-the-art diffused waveguides. This is achieved by a combination of sub-wavelength optical confinement and high-fidelity periodic poling at a first-order poling period of 4 μm. Our highly integrated PPLN waveguides are promising for future chip-scale integration of classical and quan-tum photonic systems.

Research Area(s)

  • REVERSE PROTON-EXCHANGE, 2ND-HARMONIC GENERATION, THIN-FILM, NONLINEARITIES, RESONATORS, CONVERTERS, DEVICES, LINBO3

Citation Format(s)

Ultrahigh-efficiency wavelength conversion in nanophotonic periodically poled lithium niobate waveguides. / WANG, Cheng; LANGROCK, Carsten; MARANDI, Alireza; JANKOWSKI, Marc; ZHANG, Mian; DESIATOV, Boris; FEJER, Martin M.; LONČAR, Marko.

In: Optica, Vol. 5, No. 11, 20.11.2018, p. 1438-1441.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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