Metasurface-enabled circular light propagation for ultra-fast and efficient photodetection

M. Saif Islam; Amita Rawat; Makoto Tsubokawa

doi:10.1117/12.3030510

2 October 2024 Metasurface-enabled circular light propagation for ultra-fast and efficient photodetection

M. Saif Islam, Amita Rawat, Makoto Tsubokawa

Author Affiliations +

Proceedings Volume 13114, Low-Dimensional Materials and Devices 2024; 1311408 (2024) https://doi.org/10.1117/12.3030510
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

We present a novel photodetector that involves the metasurface-induced scattering of a vertically oriented photon beam into a circularly oriented directional and guided light propagation, resulting in enhanced detection efficiency in an ultra-thin photoabsorption layer. The higher absorption efficiency is enabled by an enhanced photon density of states while substantially reducing the optical group velocity of light and extending the photon material interaction time compared to traditional semiconductor photodetectors without an integrated metasurface. Such detectors with a very thin absorption layer can enable high-efficiency and high-speed photodetectors needed in ultrafast computer networks, data communication, imaging and quantum systems.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

M. Saif Islam, Amita Rawat, and Makoto Tsubokawa "Metasurface-enabled circular light propagation for ultra-fast and efficient photodetection", Proc. SPIE 13114, Low-Dimensional Materials and Devices 2024, 1311408 (2 October 2024); https://doi.org/10.1117/12.3030510

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE