Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Triple-band black-phosphorus-based absorption using critical coupling

Not Accessible

Your library or personal account may give you access

Abstract

Black phosphorus (BP) is an important two-dimensional material that plays a key role in new photoelectric devices. In this work, a triple-band BP-based absorber was proposed, in which a monolayer BP is coupled with the missing angle rectangular structure. Due to the critical coupling of the guided resonance, the BP absorber achieves a triple-band absorption. The results showed that the absorption spectra at 2901.76 nm, 3810.71 nm, and 4676.97 nm under TM polarization achieve a high absorption of 95.45%, 98.68%, and 98.06%, respectively. In addition, the absorption peak and resonance wavelength can be flexibly adjusted by the electron doping of BP, the geometrical parameters of the structure, and the refractive index of the dielectric substrate. Because of the anisotropy properties of BP, the structure exhibits polarization-dependent absorption characteristics. Thus, the missing angle rectangular structure will provide a potential to design mid-infrared absorbers and shows a significant practical application in many photoelectric devices such as photodetectors, modulators, and optical switches.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Dynamically tunable narrowband anisotropic total absorption in monolayer black phosphorus based on critical coupling

Yong Li, Shiyu Wang, Yanghong Ou, Guoli He, Xiang Zhai, Hongjian Li, and Lingling Wang
Opt. Express 29(2) 2909-2919 (2021)

Tailoring anisotropic perfect absorption in monolayer black phosphorus by critical coupling at terahertz frequencies

Ye Ming Qing, Hui Feng Ma, and Tie Jun Cui
Opt. Express 26(25) 32442-32450 (2018)

Black phosphorus-based anisotropic absorption structure in the mid-infrared

Tingting Liu, Xiaoyun Jiang, Chaobiao Zhou, and Shuyuan Xiao
Opt. Express 27(20) 27618-27627 (2019)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved