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TiN Nanoparticles for Enhanced THz Generation in TDS Systems
Publikationstyp
Journal Article
Date Issued
2017-10-01
Sprache
English
TORE-URI
Volume
38
Issue
10
Start Page
1206
End Page
1214
Citation
Journal of Infrared, Millimeter, and Terahertz Waves 10 (38): 1206-1214 (2017-10-01)
Publisher DOI
Scopus ID
By virtue of the surface plasmon resonance effect, plasmonic nanoparticles (NPs) can localize the light field and significantly enhance the performance of some optoelectronic devices. In this work, NPs are employed for an enhanced generation of terahertz radiation from LT-GaAs-based antennas. Therefore, we have prepared plasmonic TiN NPs by direct ultrasonication (ULS) and pulsed laser ablation (PLA) techniques. The zeta potential, particle size, and absorbance were used to characterize the NPs in their colloidal forms in a comparison to commercial Au NPs. A layer of polydispersed titanium nitride (TiN) NPs prepared by PLA and deposited on the surface of an LT-GaAs device shows a significant improvement of terahertz signal generation from these devices with an enhancement of the peak to peak amplitude of 100%.
Subjects
Nanoparticles
Photoconductive antenna
THz time-domain spectroscopy