Absolute measurement of the ultrafast nonlinear electronic and rovibrational response in H${}_2$ and D${}_2$

Abstract

The electronic, rotational, and vibrational components of the ultrafast optical nonlinearity in H${}_2$ and D${}_2$ are measured directly and absolutely at intensities up to the ionization threshold of $\sim$10${}^{14}$ W/cm${}^2$. As the most basic nonlinear interactions of the simplest molecules exposed to high fields, these results constitute a benchmark for high field laser-matter theory and simulation.

20 pages, 5 figures. References fixed

References in corpus (2)

• Bright Coherent Ultrahigh Harmonics in the keV X-Ray Regime from Mid-Infrared Femtosecond Lasers
• Ultrashort filaments of light in weakly-ionized, optically-transparent media

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