Meta-grating outcouplers for optimized beam shaping in the visible
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 a meta-grating approach that achieves a 16 dB improvement in the apodized outcoupling strength. We design and fabricate devices, demonstrating accurate reproduction of beams with widths greater than 100 µm.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 28, 2021
- Source ID
- 10.1364/oe.424644
Entities
People
- Alexander Yulaev
- Chad Ropp
- Daron Westly
- Gregory Simelgor
- Vladimir A. Aksyuk
Organizations
- Defense Advanced Research Projects Agency
- National Institute of Standards and Technology
- University of Maryland