by Sudipta Mondal, Qiliang Wei, Muhammad Ashiq Fareed, Hassan A. Hafez, Xavier Ropagnol, Shuhui Sun, Subhendu Kahaly and Tsuneyuki Ozaki
Abstract:
Intense ultrafast laser interaction with solid-density plasma can lead to relativistic transient electron dynamics that are favorable for the generation of high-field terahertz (THz) pulses. We investigate the temporal characteristics of such THz pulses. Single-shot electro-optic measurements enable us to record the complete temporal profiles of the THz pulses emanating from planar Cu and aligned Cu-nanorod-array plasma. The temporal properties of the THz pulses exhibit several transients. Fully relativistic two-dimensional particle-in-cell simulations corroborate experimental observations and reveal that these features originate from electron microbunch emission from the target. Our results demonstrate that target nanostructuring provides a route to control such ultrafast electron dynamics and hence THz-pulse properties in the time domain.
Reference:
Sudipta Mondal, Qiliang Wei, Muhammad Ashiq Fareed, Hassan A. Hafez, Xavier Ropagnol, Shuhui Sun, Subhendu Kahaly and Tsuneyuki Ozaki, “Ultrafast Plasma Electron Dynamics: A Route to Terahertz Pulse Shaping”, In Physical Review Applied, vol. 13, no. 3, pp. 034044, 2020.
Bibtex Entry:
@article{mondal_ultrafast_2020,
	title = {Ultrafast {Plasma} {Electron} {Dynamics}: {A} {Route} to {Terahertz} {Pulse} {Shaping}},
	volume = {13},
	shorttitle = {Ultrafast {Plasma} {Electron} {Dynamics}},
	url = {https://link.aps.org/doi/10.1103/PhysRevApplied.13.034044},
	doi = {10.1103/PhysRevApplied.13.034044},
	abstract = {Intense ultrafast laser interaction with solid-density plasma can lead to relativistic transient electron dynamics that are favorable for the generation of high-field terahertz (THz) pulses. We investigate the temporal characteristics of such THz pulses. Single-shot electro-optic measurements enable us to record the complete temporal profiles of the THz pulses emanating from planar Cu and aligned Cu-nanorod-array plasma. The temporal properties of the THz pulses exhibit several transients. Fully relativistic two-dimensional particle-in-cell simulations corroborate experimental observations and reveal that these features originate from electron microbunch emission from the target. Our results demonstrate that target nanostructuring provides a route to control such ultrafast electron dynamics and hence THz-pulse properties in the time domain.},
	number = {3},
	urldate = {2021-01-18},
	journal = {Physical Review Applied},
	author = {Mondal, Sudipta and Wei, Qiliang and Fareed, Muhammad Ashiq and Hafez, Hassan A. and Ropagnol, Xavier and Sun, Shuhui and Kahaly, Subhendu and Ozaki, Tsuneyuki},
	month = mar,
	year = {2020},
	note = {Publisher: American Physical Society},
	pages = {034044},
	file = {APS Snapshot:C:\Users\abm50\Zotero\storage\9SIIIVQJ\PhysRevApplied.13.html:text/html}
}