MembersSahil Dagli

My research interests are in developing tunable nanophotonic devices. Photonics has the opportunity to revolutionize sensing and information processing applications with devices operating at the speed of light, yet optical technologies suffer from size limitations of conventional optical devices. Metasurfaces are arrays of nanoscale antennas that control the phase, polarization, and amplitude of light, enabling miniaturized optical devices with functions going beyond bulk optics capabilities. My work focuses on developing electrically tunable high quality factor metasurfaces using silicon and lithium niobate. Using the electro-optic Pockels effect in lithium niobate, we can electrically tune the optical response from highly resonant silicon antennas. We aim to develop a fully reconfigurable metasurface capable of shaping light as desired.

Klopfer, E.*, Dagli, S.*, Barton III, D., Lawrence, M., & Dionne, J. A. (2022). “High-Quality-Factor Silicon-on-Lithium Niobate Metasurfaces for Electro-optically Reconfigurable Wavefront Shaping”. Nano Letters, 22(4), 1703-1709.

Dionne, J., Dagli, S., Shalaev, V. M., (2023). “Nanophotonics for a sustainable future”. Physics Today 1, 76 (6): 24.

Barton, D., Hu, J., Dixon, J., Klopfer, E., Dagli, S., Lawrence, M., & Dionne, J. (2021). “High-Q nanophotonics: sculpting wavefronts with slow light”. Nanophotonics, 10(1), 83-88.

Lin, L., Hu, J., Dagli, S., Dionne, J. A., & Lawrence, M. (2023). “Universal Narrowband Wavefront Shaping with High Quality Factor Meta-Reflect-Arrays”. Nano Letters.

Klopfer, E., Carr Delgado, H., Dagli, S., Lawrence, M., Dionne, J. A. (2023) “A thermally controlled high-Q metasurface lens”. Applied Physics Letters 122, 221701