Structural design of triangular core–shell nanowires for sensing polarized mid-infrared light

Manipulating and detecting polarization states of light plays an important role in developing technology in various fields, such as remote sensing, medical phototherapy, and quantum information. However, polarization control in mid-infrared (mid-IR) wavelengths, especially longer than 10 µm, is obst...

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Bibliographic Details
Main Authors: Amthong, A. (Author), Joonhuay, J. (Author), Sathongpaen, P. (Author)
Format: Article
Language:English
Published: Elsevier Ltd 2023
Subjects:
Online Access:View Fulltext in Publisher
LEADER 02731nam a2200445Ia 4500
001 10.1016-j.matdes.2023.111983
008 230526s2023 CNT 000 0 und d
020 |a 02641275 (ISSN) 
245 1 0 |a Structural design of triangular core–shell nanowires for sensing polarized mid-infrared light 
260 0 |b Elsevier Ltd  |c 2023 
856 |z View Fulltext in Publisher  |u https://doi.org/10.1016/j.matdes.2023.111983 
520 3 |a Manipulating and detecting polarization states of light plays an important role in developing technology in various fields, such as remote sensing, medical phototherapy, and quantum information. However, polarization control in mid-infrared (mid-IR) wavelengths, especially longer than 10 µm, is obstructed by the limitation of material properties. Searching for materials and designing structures that respond to polarized light in this spectral range is still challenging. In this work, triangular core–shell AlGaAs/GaAs nanowires are numerically studied using the finite difference method. The effects of the core shift and rotating angle on the absorption coefficients are concentrated. Highly anisotropic absorption of polarized light in the mid-IR range is found when the core shifts upward and downward. Our results show that this anisotropic property is influenced by the symmetries of electron quantum states confined in the system. Broadband absorption wavelengths from 9.7 to 17.5 µm are unexpectedly found in the structure with appropriate system size. Our finding indicates that triangular core–shell nanowires are a potential platform for next-generation photonic devices capable of manipulating polarized light in a wide range of mid-IR wavelengths. © 2023 The Author(s) 
650 0 4 |a Aluminum gallium arsenide 
650 0 4 |a Anisotropy 
650 0 4 |a Core shell nano structures 
650 0 4 |a Core-shell nanostructure 
650 0 4 |a Core-shell nanostructures 
650 0 4 |a Core-shell nanowires 
650 0 4 |a Finite difference method 
650 0 4 |a Forbidden transition 
650 0 4 |a Forbidden transitions 
650 0 4 |a Infrared devices 
650 0 4 |a Infrared light 
650 0 4 |a Light absorption 
650 0 4 |a Light polarization 
650 0 4 |a Linearly polarized light 
650 0 4 |a Mid infrared absorptions 
650 0 4 |a Midinfrared 
650 0 4 |a Mid-infrared absorption 
650 0 4 |a Mid-infrared wavelengths 
650 0 4 |a Nanowires 
650 0 4 |a Off-centered core 
650 0 4 |a Photonic devices 
650 0 4 |a Quantum optics 
650 0 4 |a Remote sensing 
650 0 4 |a Shells (structures) 
700 1 0 |a Amthong, A.  |e author 
700 1 0 |a Joonhuay, J.  |e author 
700 1 0 |a Sathongpaen, P.  |e author 
773 |t Materials and Design  |x 02641275 (ISSN)  |g 230