Near-infrared chiral plasmonic metasurface absorbers
Abstract
Chirality plays an essential role in the fields of biology, medicine and physics. However, natural materials exhibit very weak chiroptical response. In this paper, near infrared chiral plasmonic metasurface absorbers are demonstrated to selectively absorb either the left-handed or right-handed circularly polarized light for achieving large circular dichroism (CD) across the wavelength range from 1.3 m to 1.8 m. It is shown that the maximum chiral absorption can reach to 0.87 and that the maximum CD in absorption is around 0.70. The current chiral metasurface design is able to achieve strong chiroptical response, which also leads to high thermal CD for the local temperature increase. The high contrast reflective chiral images are also realized with the designed metasurface absorbers. The demonstrated chiral metasurface absorbers can be applied in many areas, such as optical filters, thermal energy harvesting, optical communication, and chiral imaging.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 14, 2018
- Accession Number
- AD1103772
Entities
People
- Daniel Rosenmann
- David A Czaplewski
- Jie Gao
- Leixin Ouyang
- Wei Wang
- Xiaodong Yang
Organizations
- Missouri University of Science and Technology