ECAMP 15

Single molecular ions present a highly attractive platform for high resolution and highly sensitive spectroscopy. These molecules can be held for many hours in a pristine environment, and can be motionally laser cooled into the millikelvin regime and below. Prior to this work, methods to study "generic" single molecular ions have not been demonstrated. Here, we demonstrate a novel single...

We report the first experimental realization of cold atoms interacting with an optical frequency comb (OFC) inside a high-finesse Fabry-Perot cavity in the dispersive regime. This is achieved by leveraging the narrow optical transition of the cold atoms, with a linewidth much smaller than the free spectral range of the cavity, allowing all cavity modes to be detuned far from atomic resonance...

The development of structured ultrafast laser sources has been crucial for advancing our understanding of the fundamental dynamics of electronic and spin processes in matter. In particular, ultrafast laser pulses structured in their spin angular momentum (linked to light polarization) and orbital angular momentum (related to the transverse phase profile or vorticity of a light beam) play a...

1. Introduction

The X-ray spectral range can address atomic scale (nm) spatial resolution at ultrafast time (fs) scales, with element specificity and site-selective excitation. Non-linear wave mixing techniques in this range, in particular four-wave mixing (FWM) methods, can thus provide information on the structural and electronic dynamics of atomic and molecular systems with...

Investigations aiming at the determination of molecular chirality by chiroptical techniques continue to attract a significant amount of interest in chemistry, physics biology and pharmacology. Some focus has been put on the measurement and analysis of the photo ion circular dichroism (PICD) – a total ion yield effect – and the Photoelectron Circular Dichroism (PECD) – a molecular frame angular...