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- Title
Probing Laser Plasma Dynamics Using High-Order Harmonics Generation in Carbon-Containing Nanomaterials.
- Authors
Ganeev, Rashid A.; Kim, Vyacheslav V.; Rao, Konda Srinivasa; Guo, Chunlei; Mikheev, Gennady M.
- Abstract
We study high-order harmonics generation from plasmas generated from graphite, fullerenes, carbon nanotubes, carbon nanofibers, diamond nanoparticles, and graphene. Our approach utilizes a heating nanosecond laser pulse to produce plasmas that serve as the media for high harmonic generation from a subsequent driven femtosecond laser pulse. High harmonics are generated at different time delays following the plasma formation, which allows us to analyze the spreading of species with different masses. We analyze the harmonic yields from species of single carbon atom, 60 atoms (fullerene), 106 atoms (diamond nanoparticles), 109 atoms (CNTs and CNFs), and even much larger species of graphene sheets. The harmonic yields are analyzed in the range of 100 ns–1 ms delays. The harmonic yields were significantly higher within the 200 ns–0.5 µs range, but no harmonic is observed between 10 µs–1 ms. Our observations show that, at the optimal ablation of atoms and clusters, the laser-induced plasmas produced on the surfaces of different carbon-contained species spread out from targets with the comparable velocities.
- Subjects
FULLERENES; LASER plasmas; PLASMA dynamics; HARMONIC generation; NANOSTRUCTURED materials; CARBON nanofibers; FEMTOSECOND pulses
- Publication
Applied Sciences (2076-3417), 2021, Vol 11, Issue 5, p2143
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app11052143