TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

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

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoAOS Australian Conference on Optical Fibre Technology, ACOFT 2019 and Australian Conference on Optics, Lasers, and Spectroscopy, ACOLS 2019
ToimittajatArnan Mitchell, Halina Rubinsztein-Dunlop
KustantajaSPIE
ISBN (elektroninen)9781510631403
DOI - pysyväislinkit
TilaJulkaistu - 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaAustralian Conference on Optical Fibre Technology and Australian Conference on Optics, Lasers, and Spectroscopy - Melbourne, Austraalia
Kesto: 9 joulukuuta 201912 joulukuuta 2019

Julkaisusarja

NimiProceedings of SPIE - The International Society for Optical Engineering
Vuosikerta11200
ISSN (painettu)0277-786X
ISSN (elektroninen)1996-756X

Conference

ConferenceAustralian Conference on Optical Fibre Technology and Australian Conference on Optics, Lasers, and Spectroscopy
MaaAustraalia
KaupunkiMelbourne
Ajanjakso9/12/1912/12/19

Tiivistelmä

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.