Extension of cutoff in high harmonic by using doubly charged ions in a laser-ablation plume

Journal Article · Thu Nov 15 00:00:00 EST 2007 · Journal of the Optical Society of America. Part B, Optical Physics

DOI:https://doi.org/10.1364/JOSAB.24.002847· OSTI ID:21013795

Suzuki, Masayuki; Baba, Motoyoshi; Kuroda, Hiroto ^[1]; Ganeev, Rashid A ^[2]; Bom, Luc Bertrand Elouga; Ozaki, Tsuneyuki ^[3]

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1. The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan)
2. Scientific Association Akadempribor, Academy of Sciences of Uzbekistan, Akademgorodok, Tashkent 700125 (Uzbekistan)
3. Institut National de la Recherche Scientifique, 1650 boul. Lionel-Boulet, Varennes (Quebec) J3X 1S2 (Canada)

We report high-order harmonic generation from doubly charged ions in laser-ablation plasma produced by different prepulse intensities. At the prepulse intensity of 3.5x10{sup 10} W cm{sup -2}, harmonics up to the 63rd order (12.62 nm wavelength, 98.3 eV photon energy) were obtained by using a laser-ablation titanium plume. From analysis of the harmonics and visible radiation from the laser-ablation titanium plume at different prepulse intensities, we conclude that the highest harmonics near the cutoff region originated from doubly charged titanium ions. These studies show the effectiveness of using doubly charged ions to extend the cutoff energy of high-order harmonics.

• OSTI ID: 21013795
• Journal Information: Journal of the Optical Society of America. Part B, Optical Physics, Vol. 24, Issue 11; Other Information: DOI: 10.1364/JOSAB.24.002847; (c) 2007 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABLATION
HARMONIC GENERATION
HARMONICS
LASERS
LIGHT TRANSMISSION
PHOTONS
PLASMA
PLUMES
TITANIUM
TITANIUM IONS
VISIBLE RADIATION
WAVELENGTHS