Lithium niobate (LN) has been widely used for secondharmonic generation (SHG) from bulk crystals. Recent studies have reported improved SHG efficiency in LN microring resonators and hybrid waveguiding structures, as well as in LN nanostructures supporting anapole modes and plasmonassisted dipole resonances. Here we numerically demonstrate that high
Thinfilm lithiumniobateoninsulator (LNOI) has emerged as a superior integratedphotonics platform for linear, nonlinear, and electrooptics. Here we combine quasiphasematching, dispersion engineering, and tight mode confinement to realize nonlinear parametric processes with both high efficiency and wide wavelength tunability. On a millimeterlong, Zcut LNOI waveguide, we demonstrate efficient (
 Award ID(s):
 1842680
 Publication Date:
 NSFPAR ID:
 10166472
 Journal Name:
 Optics Letters
 Volume:
 45
 Issue:
 13
 Page Range or eLocationID:
 Article No. 3789
 ISSN:
 01469592; OPLEDP
 Publisher:
 Optical Society of America
 Sponsoring Org:
 National Science Foundation
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