Institute of Plasma Ion and Laser Technologies

Tashkent, Uzbekistan

Institute of Plasma Ion and Laser Technologies

Tashkent, Uzbekistan

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Ganeev R.A.,Institute of Plasma Ion and Laser Technologies | Boltaev G.S.,Institute of Plasma Ion and Laser Technologies | Satlikov N.K.,Institute of Plasma Ion and Laser Technologies | Kulagin I.A.,Institute of Plasma Ion and Laser Technologies | And 2 more authors.
Journal of the Optical Society of America B: Optical Physics | Year: 2012

A study of the high-order harmonic generation of picosecond laser radiation in the carbon-containing plasmas is reported. The materials studied for plasma formation were the graphite, glassy carbon, pyrographite, boron carbide, silicon carbide, and pencil lead. We show that picosecond pulses (t = 38 ps) can be efficiently converted in the short wavelength range using the laser-produced plasmas. We also demonstrate the resonance-induced enhancement of the seventh harmonic of Nd:YAG laser (152 nm), which few times exceeded the intensity of the fifth harmonic. © 2012 Optical Society of America.


Ganeev R.A.,Institute of Plasma Ion and Laser Technologies | Boltaev G.S.,Institute of Plasma Ion and Laser Technologies | Satlikov N.K.,Institute of Plasma Ion and Laser Technologies | Usmanov T.,Institute of Plasma Ion and Laser Technologies
Journal of Optics (United Kingdom) | Year: 2012

High-order harmonic generation (HHG) up to the 21st order of picosecond Nd:YAG laser radiation in the plasmas produced on the surfaces of metal targets is reported. The peculiarity of these studies was the observation of enhanced single (11th) harmonic generating from some plasmas in the vacuum ultraviolet range (80-200nm), which may originate from the resonance-induced growth of the nonlinear optical response of the medium in the vicinity of strong neutral and ionic transitions causing an increase of single harmonic conversion efficiency. Our studies showed that picosecond pulses can be efficiently converted towards the 50-220nm wavelength range using HHG in plasma. This also allowed high fluencies of harmonic emission to be achieved by application of longer (picosecond) pulses compared with the commonly used femtosecond pulses. © 2012 IOP Publishing Ltd.

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