Monday, February 27, 2017

Abstract-Terahertz modulation induced by filament interaction


Boqu He, Junyi Nan, Min Li, Shuai Yuan, and Heping Zeng

https://www.osapublishing.org/ol/abstract.cfm?uri=ol-42-5-967

We experimentally demonstrated that nonlinear filament interaction could spectrally modulate terahertz (THz) radiation generated from asymmetric two-color filaments. It was the spatial plasma density modulation in plasma channels that induced the THz spectral modulation. As a result of optical manipulation of electron density in the filamentary plasma gratings, the proportion of high-frequency THz spectra increased, while that of low-frequency THz spectra decreased, indicating that the increase of free electron density in the filamentary plasma grating brought about THz frequency upshifts.
© 2017 Optical Society of America
Full Article  |  PDF Article

No comments: