Interference effects in harmonic generation induced by focal phase distribution

• DOI: 10.1364/osac.424788
• Publication Date: 2021-06-02T19:04:15Z
• Authors: R. Reiff; J. Venzke; A. Jaron-Becker; A. Becker
• Keywords: Monochromatic color

We have performed macroscopic calculations for the thin medium or low gas density regime and a central jet using microscopic numerical solutions of time-dependent Schrödinger equation. In case spatial phase distribution broadband Gaussian pulses with negative Porras factor, our theoretical results show an interference pattern in angular below- near-threshold harmonics, which is not present monochromatic Gouy distribution. The due to off-center contributions that are in-phase those at points focus. location maxima can be estimated well-known double-slit formula effective slit separation.