期刊
OPTICS COMMUNICATIONS
卷 285, 期 12, 页码 2934-2941出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2012.02.034
关键词
Laser plasma; Harmonic generation
类别
资金
- TWAS-UNESCO
- Raja Ramanna Centre for Advanced Technology
A systematic study of the high-order harmonic generation (HHG) of laser radiation in various carbon-containing plasma plumes (CCPPs) is presented. The materials studied are: graphite, boron carbide, C-60, poly-tetrafluoroethylene, polyethylene, carbon nanotubes, and soot. These studies show that CCPPs present the best plasma media for efficient lower order (from 9th to 19th) harmonic generation, while the harmonic cutoff restricted to the 29th order. The advantages of CCPPs for the harmonic generation are confirmed by comparison of the HHG conversion efficiency with that in Ag and In plasma plumes, where the highest conversion efficiency was reported. Use of two-color pump scheme allows further enhancement of harmonic yield from the CCPPs. (C) 2012 Elsevier B.V. All rights reserved.
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