Nonlinear Generation of Vector Beams from AlGaAs Nanoantennas

Publication Type:
Journal Article
Citation:
Nano Letters, 2016, 16 (11), pp. 7191 - 7197
Issue Date:
2016-11-09
Full metadata record
Files in This Item:
Filename Description Size
2-s2.0-84994689677 am.pdfAccepted Manuscript Version3.85 MB
Adobe PDF
© 2016 American Chemical Society. The quest for nanoscale light sources with designer radiation patterns and polarization has motivated the development of nanoantennas that interact strongly with the incoming light and are able to transform its frequency, radiation, and polarization patterns. Here, we demonstrate dielectric AlGaAs nanoantennas for efficient second harmonic generation, enabling the control of both directionality and polarization of nonlinear emission. This is enabled by specialized III-V semiconductor nanofabrication of high-quality AlGaAs nanostructures embedded in optically transparent low-index material, thus allowing for simultaneous forward and backward nonlinear emission. We show that the nanodisk AlGaAs antennas can emit second harmonic in preferential direction with a backward-to-forward ratio of up to five and can also generate complex vector polarization beams, including beams with radial polarization.
Please use this identifier to cite or link to this item: