@article{12519, author = {Ran Reiff and Joel Venzke and Agnieszka Jaron-Becker and Andreas Becker}, title = {Interference effects in harmonic generation induced by focal phase distribution}, abstract = {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.}, year = {2021}, journal = {OSA Continuum}, volume = {4}, pages = {1897}, month = {2021-07}, publisher = {The Optical Society}, issn = {2578-7519}, url = {https://www.osapublishing.org/osac/fulltext.cfm?uri=osac-4-7-1897&id=452068}, doi = {10.1364/osac.424788}, }