Spiralled periodically poled thin-film lithium niobate for compact and efficient second-harmonic generation
Paper in proceeding, 2026
We present 3.5 mm long spiralled periodically poled waveguides for ultracompact second-harmonic generation in z-cut thin-film lithium niobate. We measure a conversion efficiency of up to 800 %W-1cm-2 on an area of 500 x 500 µm2.
Non-linear photonics
lithium niobate
harmonic generation
ferroelectrics
integrated photonics
Author
Niklas Hammerschmidt
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Yan Gao
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Laura Barret
Royal Institute of Technology (KTH)
Martin Zelan
RISE Research Institutes of Sweden
Jochen Schröder
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Carlota Canalias Gomez
Royal Institute of Technology (KTH)
Victor Torres Company
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
CLEO 2026
SM1F.5
978-1-957171-58-6 (ISBN)
CLEO 2026
Charlotte, USA,
Charlotte, USA,
Subject Categories (SSIF 2025)
Atom and Molecular Physics and Optics
Areas of Advance
Nanoscience and Nanotechnology
Materials Science
Infrastructure
Myfab (incl. Nanofabrication Laboratory)
DOI
10.1364/CLEO_SI.2026.SM1F.5
Related datasets
Tightly-Confined and Long Z-Cut Lithium Niobate Waveguide with Ultralow-Loss [dataset]
DOI: https://doi.org/10.1002/lpor.202500042