Interference effects in harmonic generation induced by focal phase distribution
| Autor: | Joel Venzke, Agnieszka Jaron-Becker, Ran Reiff, Andreas Becker |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Jet (fluid) genetic structures Gaussian Phase (waves) Interference (wave propagation) Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Schrödinger equation Computational physics symbols.namesake Harmonics symbols High harmonic generation Monochromatic color Electrical and Electronic Engineering |
| Zdroj: | OSA Continuum. 4:1897 |
| ISSN: | 2578-7519 |
| DOI: | 10.1364/osac.424788 |
| Popis: | We have performed macroscopic calculations for the thin medium or low gas density regime and a central gas jet using microscopic numerical solutions of the time-dependent Schrödinger equation. In the case of a spatial phase distribution for broadband Gaussian pulses with a negative Porras factor, our theoretical results show an interference pattern in the angular distribution of below- and near-threshold harmonics, which is not present for the monochromatic Gouy phase distribution. The interference pattern is due to off-center contributions that are in-phase with those at the central points in the focus. The location of the maxima in the interference pattern can be estimated using the well-known double-slit formula with an effective slit separation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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