High-order harmonic generation in alkanes: signature of the ground state wavefunction

Author

Vozzi, C. ; Anscombe, M. ; Benedetti, E. ; Caumes, J.-P. ; Sansone, G. ; Stagira, S. ; Nisoli, M. ; Altucci, C. ; Velotta, R. ; Marangos, J.P. ; Heesel, E. ; Springate, E. ; Pascolini, M. ; Paletto, L. ; Villoresi, Paolo

Author_Institution

INFM, Milan, Italy

fYear

2005

fDate

12-17 June 2005

Firstpage

68

Abstract

In this work, XUV spectra from some alkanes (methane, I_p = 12.97 eV; propane, I_p = 11.07 eV; butane, I_p = 10.63 eV) are measured and compared with those acquired from xenon (I_p = 12.13 eV). The harmonic emission is obtained focusing femtosecond light pulses on a pulsed gas jet. Two different pulse durations are considered, namely 20 fs and 6 fs; in both cases the pulse energy could be continuously tuned without modification in temporal and spatial structure of the driving pulses. The experimental results have been compared to numerical simulation based on an atom-like Lewenstein model. Preliminary results reproduce the cutoff wavelength behavior of the investigated molecular species.

Keywords

ground states; high-speed optical techniques; molecule-photon collisions; optical focusing; optical harmonic generation; organic compounds; ultraviolet spectra; wave functions; 20 fs; 6 fs; XUV spectra; alkanes; atom-like Lewenstein model; butane; cutoff wavelength behavior; femtosecond light pulses; ground state wavefunction; harmonic emission; high-order harmonic generation; light pulse focusing; methane; molecular species; propane; pulsed gas jet; Atomic beams; Biomedical optical imaging; Frequency conversion; Ionization; Laboratories; Nonlinear optics; Optical harmonic generation; Stationary state; Ultrafast optics; Xenon;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics Conference, 2005. EQEC '05. European

Print_ISBN

0-7803-8973-5

Type

conf

DOI

10.1109/EQEC.2005.1567240

Filename

1567240