Fig. 4: Qualitative performance comparison of sources for ex vivo cerebral tissue imaging.
From: Soliton microcomb based spectral domain optical coherence tomography
En-face images at different depths of a slice of brain tissue were obtained with both a superluminescent diode (SLD) and a dissipative Kerr soliton (DKS) source a and c respectively, revealing the presence of highly scattering neuronal fibers (pointed by blue arrows). The en-face views obtained with the DKS source also contain additional features, pointed by red arrows, such as bright vertical stripes, circular ring patterns, and higher intensity regions. The cross-sections for both SLD and DKS imaging b and d, respectively, highlight the imaging’s field curvature, highly reflective structures below the sample (pointed by white arrows) and the presence of an ambiguity range when imaging with the discrete DKS source (pointed by red arrows). Scalebars: 50 μm (a and c), 100 μm (b, d and e).
