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Meta-grating outcouplers for optimized beam shaping in the visible

Published

Author(s)

Chad Ropp, Alexander Yulaev, Daron Westly, Gregory Simelgor, Vladimir Aksyuk

Abstract

Accurate coupling between optical modes at the interface between photonic chips and free space is required for the development of many on-chip devices. This control is critical in quantum technologies where large-diameter beams with designed mode profiles are required. Yet, these designs are often difficult to achieve at shorter wavelengths where fabrication limits the resolution of designed devices. In this work we demonstrate optimized outcoupling of free-space beams at 461 nm. Using an effective meta-grating model, we design and fabricate an apodized grating outcoupler that accurately reproduces beams with widths greater than 100 µm.
Citation
Optics Express
Volume
29
Issue
10

Keywords

nanophotonics, metasurface

Citation

Ropp, C. , Yulaev, A. , Westly, D. , Simelgor, G. and Aksyuk, V. (2021), Meta-grating outcouplers for optimized beam shaping in the visible, Optics Express, [online], https://doi.org/10.1364/OE.424644, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=931879 (Accessed April 18, 2024)
Created May 10, 2021, Updated November 29, 2022