Tuning of the high-order harmonics generated from laser plasma plumes and solid surfaces by varying the laser spectrum, chirp, and focal position
R. A. GaneevAcademy of Sciences of UzbekistanP. A. NaikRaja Ramanna Centre for Advanced TechnologyH. SinghalRaja Ramanna Centre for Advanced TechnologyJ. A. ChakeraRaja Ramanna Centre for Advanced TechnologyParshotam Dass GuptaRaja Ramanna Centre for Advanced TechnologyHiroto KurodaThe University of Tokyo
ABI
Abstract
Tuning of the harmonic wavelength by varying the driving radiation wavelength, chirp, and intensity during the interaction of Ti:sapphire laser radiation with preformed laser plasma and solid surfaces was studied. High-order harmonics (HHG) were studied at different spectral, phase, and intensity characteristics of femtosecond radiation. Analysis of the variation of the high-order harmonic distribution in the case of different plumes is presented. We show that the tuning of harmonic wavelength allows achievement of resonance enhancement of single harmonics in the plateau distribution of HHG.
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