Photocurrent detection of the orbital angular momentum of light
Abstract
Light has several degrees of freedom (wavelength, polarization, pulse length, and so on) that can be used to encode information. A light beam or pulse can also be structured to have the property of orbital angular momentum, becoming a vortex. Because the winding number of the vortex can be arbitrary, the channel capacity can be expanded considerably. Zhang et al. and Ji et al. developed nanophotonic-based methods for generating and electrically detecting light with arbitrary orbital angular momentum, a goal that has remained an outstanding challenge so far (see the Perspective by Ge). The nanophotonic platform provides a route for developing high-capacity optical chips.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 15, 2020
- Source ID
- 10.1126/science.aba9192
Entities
People
- Albert V Davydov
- Anlian Pan
- Liang Feng
- Ritesh Agarwal
- Sergiy Krylyuk
- Wenjing Liu
- Xiaopeng Fan
- Zhifeng Zhang
- Zhurun Ji
Organizations
- Army Research Office
- Hunan University
- National Institute of Standards and Technology
- National Natural Science Foundation of China
- National Science Foundation
- National Science Foundation Office of the Director
- Office of Naval Research
- University of Pennsylvania