High-order harmonic generation from 2D periodic potentials in circularly and bichromatic circularly polarized laser fields

Circularly polarized molecular high harmonic generation using a bicircular laser

We investigate the process of circularly polarized high harmonic generation in molecules using a bicircular laser field. In this context, we show that molecules offer a very robust framework for the production of circularly polarized harmonics, provided their symmetry is compatible with that of the laser field. Using a discrete time-dependent symmetry analysis, we show how all the features (har...

Helicity-Selective Enhancement and Polarization Control of Attosecond High Harmonic Waveforms Driven by Bichromatic Circularly Polarized Laser Fields.

High harmonics driven by two-color counterrotating circularly polarized laser fields are a unique source of bright, circularly polarized, extreme ultraviolet, and soft x-ray beams, where the individual harmonics themselves are completely circularly polarized. Here, we demonstrate the ability to preferentially select either the right or left circularly polarized harmonics simply by adjusting the...

Quantum-classical correspondence in circularly polarized high harmonic generation

Generating Isolated Elliptically Polarized Attosecond Pulses Using Bichromatic Counterrotating Circularly Polarized Laser Fields.

We theoretically demonstrate the possibility to generate both trains and isolated attosecond pulses with high ellipticity in a practical experimental setup. The scheme uses circularly polarized, counterrotating two-color driving pulses carried at the fundamental and its second harmonic. Using a model Ne atom, we numerically show that highly elliptic attosecond pulses are generated already at th...

Ionization and high-order harmonic generation in aligned benzene by a short intense circularly polarized laser pulse

Roi Baer, Daniel Neuhauser, Petra R. Ždánská, and Nimrod Moiseyev Institute of Chemistry and the Lise Meitner Center for Quantum Chemistry, Hebrew University of Jerusalem, Jerusalem 91904, Israel Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, California 90025, USA Department of Chemistry, Technion–Israel Institute of Technology, Haifa 32000, Isra...