---
res:
  bibo_abstract:
  - High-fidelity periodic poling over long lengths is required for robust, quasi-phase-matched
    second-harmonic generation using the fundamental, quasi-TE polarized waveguide
    modes in a thin-film lithium niobate (TFLN) waveguide. Here, a shallow-etched
    ridge waveguide is fabricated in x-cut magnesium oxide doped TFLN and is poled
    accurately over 5 mm. The high fidelity of the poling is demonstrated over long
    lengths using a non-destructive technique of confocal scanning second-harmonic
    microscopy. We report a second-harmonic conversion efficiency of up to 939 %/W
    (length-normalized conversion efficiency 3757 %/Wcm²), measured at telecommunications
    wavelengths. The device demonstrates a narrow spectral linewidth (1 nm) and can
    be tuned precisely with a tuning characteristic of 0.1 nm/°C, over at least 40
    °C without measurable loss of efficiency.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Jie
      foaf_name: Zhao, Jie
      foaf_surname: Zhao
  - foaf_Person:
      foaf_givenName: Michael
      foaf_name: Rüsing, Michael
      foaf_surname: Rüsing
      foaf_workInfoHomepage: http://www.librecat.org/personId=22501
    orcid: 0000-0003-4682-4577
  - foaf_Person:
      foaf_givenName: Usman A.
      foaf_name: Javid, Usman A.
      foaf_surname: Javid
  - foaf_Person:
      foaf_givenName: Jingwei
      foaf_name: Ling, Jingwei
      foaf_surname: Ling
  - foaf_Person:
      foaf_givenName: Mingxiao
      foaf_name: Li, Mingxiao
      foaf_surname: Li
  - foaf_Person:
      foaf_givenName: Qiang
      foaf_name: Lin, Qiang
      foaf_surname: Lin
  - foaf_Person:
      foaf_givenName: Shayan
      foaf_name: Mookherjea, Shayan
      foaf_surname: Mookherjea
  bibo_doi: 10.1364/oe.395545
  bibo_issue: '13'
  bibo_volume: 28
  dct_date: 2020^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/1094-4087
  dct_language: eng
  dct_publisher: Optica Publishing Group@
  dct_subject:
  - Atomic and Molecular Physics
  - and Optics
  dct_title: Shallow-etched thin-film lithium niobate waveguides for highly-efficient
    second-harmonic generation@
...