AI Article Synopsis
- Scientists created hexagonal metal nanostructures to enhance local current density and manage heat at the nanoscale, boosting THz emission from photoconductive sources.
- The new device achieved a 60% increase in THz emission field amplitude compared to a commercial antenna, while using only 75% of the bias voltage.
- This hexagonal design outperforms earlier nanoplasmonic structures by better concentrating current density near the metal surface, with an operating bandwidth of 2.6 THz, indicating its potential for more efficient THz sources.
Article Abstract
Arrayed hexagonal metal nanostructures are used to maximize the local current density while providing effective thermal management at the nanoscale, thereby allowing for increased emission from photoconductive terahertz (THz) sources. The THz emission field amplitude was increased by 60% above that of a commercial THz photoconductive antenna, even though the hexagonal nanostructured device had 75% of the bias voltage. The arrayed hexagonal outperforms our previously investigated strip array nanoplasmonic structure by providing stronger localization of the current density near the metal surface with an operating bandwidth of 2.6 THz. This approach is promising to achieve efficient THz sources.
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| http://dx.doi.org/10.1364/OE.22.027992 | DOI Listing |
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