Fig. 1: Measured Transient Change of the XUV Absorbance (image) Forschungsverbund Berlin Share Print E-Mail Caption Measured transient change of the XUV absorbance in the 4d-core-to-valence (σ*) and 4d-core-to-Rydberg spectral region in CH3I molecules. Pronounced sub-cycle oscillations at twice the NIR laser frequency are observed in the region of the core-to-Rydberg transitions, while the core-to-valence transitions are only weakly affected by the field. The observed effect is traced back to the higher polarizability of the Ryberg states, which makes them more susceptible to the interaction with the laser field Credit MBI Berlin Usage Restrictions The image may only be used with appropriate caption and credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.