Figure 2

Probing beams, point and line spread function of the SDHM and the microscope responses to step objects. (a) Intensity profile of the probing beams and 2D grey-scale intensity (inset). (b) Amplitude profiles of the separated probing beams as the point spread function (solid line) and the line spread function (dashed line). (c) Model profiles of phase object (1) and amplitude object (2). (d) SDHM phase response to amplitude-phase step (solid line), phase step (dashed line) and amplitude step (dash-dotted line). (e) SDHM amplitude response to amplitude-phase step (solid line), phase step (dashed line) and amplitude step (dash-dotted line). (f) SDHM phase response to phase object (dashed line) and appropriate phase image retrieval based on linearization algorithm (solid line).