2016/04/29 by V. F. Gili, L. Carletti, A. Locatelli +9 · 1 citation
Physics and Astronomy · #physics.optics
paper · pdf · doi:10.1364/oe.24.015965
published as Opt. Express 24, 15965-15971 (2016)
arxiv created 2016/04/29 · arxiv updated 2016/08/24
We demonstrate monolithic aluminum gallium arsenide (AlGaAs) optical anoantennas. Using a selective oxidation technique, we fabricate such epitaxial semiconductor nanoparticles on an aluminum oxide substrate. Second harmonic generation from an AlGaAs nanocylinder of height h=400 nm 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 otpimized geometry.