Monolithic AlGaAs second-harmonic nanoantennas

Valerio Flavio Gili (1) , Luca Carletti , A. Locatelli , Davide Rocco , M. Finazzi , L. Ghirardini , Ivan Favero (1) , C. Gomez (2) , A. Lemaître (2) , M. Celebrano , C. de Angelis , Giuseppe Leo (1)

1 MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques
2 LPN - Laboratoire de photonique et de nanostructures

We demonstrate monolithic aluminum gallium arsenide (AlGaAs) optical nanoantennas. Using a selective oxidation technique, we fabricated epitaxial semiconductor nanocylinders on an aluminum oxide substrate. Second harmonic generation from AlGaAs nanocylinders of 400 nm height and varying radius pumped with femtosecond pulses delivered at 1554-nm wavelength has been measured, revealing a peak conversion efficiency exceeding 10−5 for nanocylinders with an optimized geometry.

Domains: Physics [physics]; Physics [physics]; Optics [physics.optics]

Valerio Flavio Gili, Luca Carletti, A. Locatelli, Davide Rocco, M. Finazzi, et al.. Monolithic AlGaAs second-harmonic nanoantennas. Optics Express, 2016, 24 (14), pp.15965-15971. ⟨10.1364/OE.24.015965⟩. ⟨hal-03271123⟩