Accession Number:

AD1105118

Title:

Ultrahigh-Efficiency Wavelength Conversion in Nanophotonic Periodically Poled Lithium Niobate Waveguides

Descriptive Note:

Journal Article - Open Access

Corporate Author:

Harvard University Cambridge United States

Report Date:

2018-11-07

Pagination or Media Count:

4.0

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 2600W cm2 for second-harmonic generationof 1.5 micro m 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 micro m. Our highly integrated PPLN waveguides are promising for future chip-scale integration of classical and quantum photonic systems.

Subject Categories:

  • Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE