Publications by authors named "Mostafa Masnadi-Shirazi"
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.
Low-temperature (LT) grown GaAs has a subpicosecond carrier response time that makes it favorable for terahertz photoconductive (PC) switching. However, this is obtained at the price of lower mobility and lower thermal conductivity than GaAs. Here we demonstrate subpicosecond carrier sweep-out and over an order of magnitude higher sensitivity in detection from a GaAs-based PC switch by using a nanoplasmonic structure.
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