Energy deposition dynamics of femtosecond pulses in water

We exploit inverse Raman scattering and solvated electron absorption to perform a quantitative characterization of the energy loss and ionization dynamics in water with tightly focused near-infrared femtosecond pulses. A comparison between experimental data and numerical simulations suggests that th...

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Bibliographic Details
Published in:Applied physics letters 2014-12, Vol.105 (22)
Main Authors: Minardi, Stefano, Milián, Carles, Majus, Donatas, Gopal, Amrutha, Tamošauskas, Gintaras, Couairon, Arnaud, Pertsch, Thomas, Dubietis, Audrius
Format: Article
Language:English
Subjects:
Applied physics
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMPARATIVE EVALUATIONS
Computer simulation
COMPUTERIZED SIMULATION
ENERGY ABSORPTION
Energy dissipation
Femtosecond pulses
Ionization
PULSED IRRADIATION
RAMAN EFFECT
Raman spectra
Short pulses
SOLVATED ELECTRONS
WATER
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Summary:We exploit inverse Raman scattering and solvated electron absorption to perform a quantitative characterization of the energy loss and ionization dynamics in water with tightly focused near-infrared femtosecond pulses. A comparison between experimental data and numerical simulations suggests that the ionization energy of water is 8 eV, rather than the commonly used value of 6.5 eV. We also introduce an equation for the Raman gain valid for ultra-short pulses that validates our experimental procedure.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4903759