Figure 3
Imaging performance of ALEX and FWM optoacoustic microscopy in phantoms. Two intertwined sutures of 18 μm and 30 μm diameter were used. (a–c) Separate depiction of simultaneously recorded images in ALEX mode of the (a) blue, (b) green, and (c) red CWLD, and their (d) overlay. (e–g) Achieved resolutions determined by extracting the respective edge-spread-functions (ESF) along the arrows indicated in (a–c) and Gaussian fitting the corresponding line-spread-functions (LSF). (h–n) Analogous depictions and analysis of the FWM measurement of the identical sample.
