Experimental Evidence for Selection Rules in Multiphoton Double Ionization of Helium

Abstract

We report on the observation of phase space modulations in the correlated electron emission after strong field double ionization of helium using laser pulses with a wavelength of 394~nm and an intensity of $3\cdot 10^{14}$W/cm${}^2$. Those modulations are identified as direct results of quantum mechanical selection rules predicted by many theoretical calculations. They only occur for an odd number of absorbed photons. By that we attribute this effect to the parity of the continuum wave function.

arXiv comment5 pages, 3 figures, submitted to Phys. Rev. Lett

References in corpus (3)

• Double photo-electron momentum spectra of Helium at infrared wavelength
• Observation of Electron Energy Discretization in Strong Field Double Ionization
• Energy Correlation in Above-Threshold Nonsequential Double Ionization at 800 nm

Cited by in corpus (4)

• Theory of Subcycle Linear Momentum Transfer in Strong-Field Tunneling Ionization
• Multiphoton Double Ionization of Helium at 394nm - a Fully Differential Experiment
• Three-electron correlations in strong laser field ionization: Spin induced effects
• Polarization tagging of two-photon double ionization by elliptically polarized XUVs