Second-harmonic generation in GaAs photonic crystal cavities in (111)B and (001) crystal orientations

Sonia Buckley, Marina Radulaski, Jan Petykiewicz, Konstantinos G. Lagoudakis, Ju-Hyung Kang, Mark Brongersma, Klaus Biermann, Jelena Vučković

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


We demonstrate second-harmonic generation in photonic crystal cavities in (001)- and (111)B-oriented GaAs. The fundamental resonance is at 1800 nm, leading to generated second harmonic below the GaAs band gap. Below-band-gap operation minimizes absorption of the second-harmonic and two-photon absorption of the pump. Photonic crystal cavities were fabricated in both orientations at various in-plane rotations of the GaAs substrate. The rotation dependence and far-field patterns of the second harmonic match simulation. We observe similar maximum efficiencies of 1.2%/W in (001)- and (111)B-oriented GaAs.
Original languageEnglish
Pages (from-to)516-523
Number of pages8
JournalACS Photonics
Issue number6
Publication statusPublished - 21 May 2014


  • nanophotonics
  • nonlinear optics
  • photonic crystals
  • semiconductor microcavities


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