Polarization anisotropy in nanowires: Fundamental concepts and progress towards terahertz-band polarization devices
Pronounced polarization anisotropy in semiconductor nanowires has been exploited to achieve polarization-sensitive devices operating across the electromagnetic spectrum, from the ultraviolet to the terahertz band. This contribution describes the physical origins of optical and electrical anisotropy...
| Main Authors: | , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
Elsevier
2022
|
| _version_ | 1826308988796403712 |
|---|---|
| author | Johnston, M Joyce, HJ |
| author_facet | Johnston, M Joyce, HJ |
| author_sort | Johnston, M |
| collection | OXFORD |
| description | Pronounced polarization anisotropy in semiconductor nanowires has been exploited to achieve polarization-sensitive devices operating across the electromagnetic spectrum, from the ultraviolet to the terahertz band. This contribution describes the physical origins of optical and electrical anisotropy in nanowires. Polarization anisotropy arising from dielectric contrast, and the behaviour of (nano)wire grid polarizers, are derived from first principles. This review discusses experimental observations of polarization-sensitive light–matter interactions in nanowires. It then describes how these phenomena are employed in devices that detect or modulate polarized terahertz radiation on ultrafast timescales. Such novel terahertz device concepts are expected to find use in a wide variety of applications including high-speed terahertz-band communications and molecular fingerprinting. |
| first_indexed | 2024-03-07T07:29:02Z |
| format | Journal article |
| id | oxford-uuid:87d490a8-caa5-452c-b3e8-91e560e107dc |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:29:02Z |
| publishDate | 2022 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:87d490a8-caa5-452c-b3e8-91e560e107dc2022-12-09T17:17:07ZPolarization anisotropy in nanowires: Fundamental concepts and progress towards terahertz-band polarization devicesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:87d490a8-caa5-452c-b3e8-91e560e107dcEnglishSymplectic ElementsElsevier2022Johnston, MJoyce, HJPronounced polarization anisotropy in semiconductor nanowires has been exploited to achieve polarization-sensitive devices operating across the electromagnetic spectrum, from the ultraviolet to the terahertz band. This contribution describes the physical origins of optical and electrical anisotropy in nanowires. Polarization anisotropy arising from dielectric contrast, and the behaviour of (nano)wire grid polarizers, are derived from first principles. This review discusses experimental observations of polarization-sensitive light–matter interactions in nanowires. It then describes how these phenomena are employed in devices that detect or modulate polarized terahertz radiation on ultrafast timescales. Such novel terahertz device concepts are expected to find use in a wide variety of applications including high-speed terahertz-band communications and molecular fingerprinting. |
| spellingShingle | Johnston, M Joyce, HJ Polarization anisotropy in nanowires: Fundamental concepts and progress towards terahertz-band polarization devices |
| title | Polarization anisotropy in nanowires: Fundamental concepts and progress towards terahertz-band polarization devices |
| title_full | Polarization anisotropy in nanowires: Fundamental concepts and progress towards terahertz-band polarization devices |
| title_fullStr | Polarization anisotropy in nanowires: Fundamental concepts and progress towards terahertz-band polarization devices |
| title_full_unstemmed | Polarization anisotropy in nanowires: Fundamental concepts and progress towards terahertz-band polarization devices |
| title_short | Polarization anisotropy in nanowires: Fundamental concepts and progress towards terahertz-band polarization devices |
| title_sort | polarization anisotropy in nanowires fundamental concepts and progress towards terahertz band polarization devices |
| work_keys_str_mv | AT johnstonm polarizationanisotropyinnanowiresfundamentalconceptsandprogresstowardsterahertzbandpolarizationdevices AT joycehj polarizationanisotropyinnanowiresfundamentalconceptsandprogresstowardsterahertzbandpolarizationdevices |