Topology optimization in nonlinear nanophotonics: From frequency conversion to exceptional points

Zin Lin, Weiliang Jin, Adi Pick, Steven G. Johnson, Eric Mazur, Marko Loncar, Alejandro W. Rodriguez

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We apply a large-scale inverse design strategy based on topology optimization (TO) toward the automatic discovery of complex nanophotonic structures-new kinds of micropillars, photonic-cyrstal slabs, and waveguides comprising complicated arrangements of subwavelength dielectrics-exhibiting unusual nonlinear and spectral properties. The structures support multiple, tightly confined resonances at far-away wavelengths and exhibit the largest nonlinear confinement factors predicted thus far (oders of magnitude larger than state-of-the-art ring resonators or PhC cavities), leading to highly efficient nonlinear frequency conversion (NFC). The same TO approach can be exploited to design PhCs supporting dual-polarization, dual-wavelength, or highly degenerate Dirac cones, with implications to zero-index metamaterials, topological photonics, and exceptional points (EP).

Original languageEnglish (US)
Title of host publicationCLEO
Subtitle of host publicationScience and Innovations, CLEO_SI 2017
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781943580279
StatePublished - 2017
EventCLEO: Science and Innovations, CLEO_SI 2017 - San Jose, United States
Duration: May 14 2017May 19 2017

Publication series

NameOptics InfoBase Conference Papers
VolumePart F41-CLEO_SI 2017
ISSN (Electronic)2162-2701


OtherCLEO: Science and Innovations, CLEO_SI 2017
Country/TerritoryUnited States
CitySan Jose

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials


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