Meta-grating outcouplers for optimized beam shaping in the visible.
Opt Express
; 29(10): 14789-14798, 2021 May 10.
Article
em En
| MEDLINE
| ID: mdl-33985193
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 461â
nm using a meta-grating approach that achieves a 16â
dB improvement in the apodized outcoupling strength. We design and fabricate devices, demonstrating accurate reproduction of beams with widths greater than 100â
µm.
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MEDLINE
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En
Revista:
Opt Express
Ano de publicação:
2021
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Article