We investigate the up-conversion process of broadband light from parametric down-conversion (PDC), focusing on the spatio-temporal spectral properties of the sum-frequency generated (SFG) radiation. We demonstrate that the incoherent component of the SFG spectrum is characterized by a skewed geometry in space-time, which originates from a compensation between the group-velocity mismatch and the spatial walk-off of the fundamental and the SFG fields. The results are illustrated both by a theoretical modeling of the optical system and by experimental measurements.
@article{arxiv.1403.7095,
title = {Space-time coupling in the up-conversion of broadband down-converted light},
author = {Enrico Brambilla and Ottavia Jedrkiewicz and Paolo di Trapani and Alessandra Gatti},
journal= {arXiv preprint arXiv:1403.7095},
year = {2015}
}
Comments
11 pages, 9 figures. arXiv admin note: text overlap with arXiv:1308.2366