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Tailoring directional scattering of second-harmonic generation from (111)-GaAs nanoantennas

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publicationAOS Australian Conference on Optical Fibre Technology, ACOFT 2019 and Australian Conference on Optics, Lasers, and Spectroscopy, ACOLS 2019
EditorsArnan Mitchell, Halina Rubinsztein-Dunlop
ISBN (Electronic)9781510631403
Publication statusPublished - 2019
Publication typeA4 Article in a conference publication
EventAustralian Conference on Optical Fibre Technology and Australian Conference on Optics, Lasers, and Spectroscopy - Melbourne, Australia
Duration: 9 Dec 201912 Dec 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceAustralian Conference on Optical Fibre Technology and Australian Conference on Optics, Lasers, and Spectroscopy


The group of zincblende III-V compound semiconductors, especially (100)-grown AlGaAs and GaAs, have recently been presented as promising materials for second harmonic generation (SHG) at the nanoscale. However, major obstacles to push the technology towards practical applications are the limited control over directionality of the SH emission and especially zero forward/backward radiation. In this work we provide both theoretically and experimentally a solution to these problems by presenting the first SHG nanoantennas made from (111)-GaAs embedded in a low index material. These nanoantennas show superior forward directionality compared to their (100)-counterparts. Most importantly, it is possible to manipulate the SHG radiation pattern of the nanoantennas by changing the pump polarization without affecting the linear properties and the total nonlinear conversion efficiency.


  • Dielectric nanoantennas, Directional emission, Multipolar interference, Second harmonic generation

Publication forum classification

Field of science, Statistics Finland