Spatio-temporal joint pulse shaper: analysis of the property by Wigner distribution function

Spatio-temporal pulse shaper which controls the spatial and temporal profile of an ultrafast light pulse. The pulse shaper uses the spatio-temporal coupling effect in a pulse shaper. In this paper, the quantitative property is analyzed numerically by using Wigner distribution function. By the analysis, it is confirmed that spatio-temporal output pulse track forms the differentiation of the phase mask.