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25 April 2024

» arxiv » 1604.8881

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Monolithic AlGaAs second-harmonic nanoantennas
V. F. Gili ; L. Carletti ; A. Locatelli ; D. Rocco ; M. Finazzi ; L. Ghirardini ; I. Favero ; C. Gomez ; A. Lemaître ; M. Celebrano ; C. De Angelis ; G. Leo ;
Date:	29 Apr 2016
Abstract:	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.
Source:	arXiv, 1604.8881
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