R A Ganeev 2007 J. Phys. B: At. Mol. Opt. Phys. 40 R213 doi:10.1088/0953-4075/40/22/R01
R A Ganeev
Show affiliationsA review of studies of high-order harmonic generation in plasma plumes is presented. The generation of high-order harmonics (up to the 101st order, λ = 7.9 nm) of Ti:sapphire laser radiation during the propagation of short laser pulses through a low-excited, low-ionized plasma produced on the surfaces of different targets is analysed. The observation of considerable resonance-induced enhancement of a single harmonic (λ = 61.2 nm) at the plateau region with 10−4 conversion efficiency in the case of an In plume can offer some expectations that analogous processes can be realized in other plasma samples in the shorter wavelength range. Recent achievements of single-harmonic enhancement at mid- and end-plateau regions are discussed. Various methods for the optimization of harmonic generation are analysed, such as the application of the second harmonic of driving radiation and the application of prepulses of different durations. The enhancement of harmonic generation efficiency during the propagation of femtosecond pulses through a nanoparticle-containing plasma is discussed.
52.38.-r Laser-plasma interactions
42.60.Lh Efficiency, stability, gain, and other operational parameters
52.70.Kz Optical (ultraviolet, visible, infrared) measurements
52.77.Dq Plasma-based ion implantation and deposition
42.65.Ky Frequency conversion; harmonic generation, including higher-order harmonic generation
52.50.Jm Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.)
Instrumentation and measurement
Issue 22 (28 November 2007)
Received 18 June 2007, in final form 26 September 2007
Published 30 October 2007
R A Ganeev 2007 J. Phys. B: At. Mol. Opt. Phys. 40 R213
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