Photonics Society

Photonics Society – 7:00PM, Thursday, November 10

Metasurface-Enhanced Optoelectronics: Directional Light Emitters and Computational Image Sensors

Prof. Roberto Paiella, Boston University, Boston, MA

Plasmonic and dielectric metasurfaces have been widely investigated as a means to tailor the wavefronts of externally incident light for passive device applications. At the same time, their direct integration within active optoelectronic devices such as light emitters and photodetectors is far less established. In this talk, I will report the design and development of plasmonic metasurfaces that can promote directional light emission and angle-sensitive photodetection from a nearby active material. These results are significant for the continued miniaturization and large-scale integration of optoelectronic devices and related systems, and as a way to create new functionalities and enable novel applications. Specifically, the use of metasurface directional photodetectors for image sensing and processing will be presented, including the demonstration of lensless compound-eye vision with ultra-wide field of view, optical edge detection for computer vision, and phase-contrast imaging.

Roberto Paiella is a Professor of Electrical and Computer Engineering at Boston University with a joint appointment in the Division of Materials Science and Engineering, and a member of the BU Photonics Center. He received his BS and MS degrees from Columbia University and his PhD from Caltech. Prior to joining BU he worked as a postdoc at Bell Laboratories, Lucent Technologies. His research over the years has focused on the development and investigation of novel optoelectronic devices using bandgap engineering, plasmonics, and nanophotonics. He has served on multiple professional committees, including most recently as an editorial board member of Scientific Reports and CLEO 2022 program chair.

This meeting begins at 7PM Thursday, November 10th, 2022 and will be in person and online. Prior to the seminar there will be social time and networking from 6:00 – 7:00PM. Food from Chipotle will be provided. The seminar will begin at 7:00PM. Masking and COVID vaccination are highly recommended. Please register for either in-person or online.

The online registration link will be posted two days prior to the seminar.

The online version will take place on Zoom and will be started 30 minutes early (at 6:30 EDT) to allow for technical troubleshooting. The seminar will begin at 7:00PM. For more information contact Keisuke Kojima, IEEE Boston Photonics Society chair at keisukekojima@ieee.org, or visit the IEEE Boston Photonics Society website at www.bostonphotonics.org.

Location: Analog Devices Hubble Auditorium

Directions: 1 Analog Way Wilmington, MA 01887

From Industrial Way entrance, follow signs for Visitor or Garage Parking, then follow signs for Main Entry which lead to the Hub Building - circular building at center of campus, visitor entrance is on the east side. Meeting is located on the second floor in the Hubble Auditorium.