Skip to main content
. Author manuscript; available in PMC: 2016 Feb 4.
Published in final edited form as: J Opt Soc Am A Opt Image Sci Vis. 2015 Dec 1;32(12):2286–2306. doi: 10.1364/JOSAA.32.002286

Fig. 15.

Fig. 15

(a) Refractive index profile mapped to the optical-space, and (b) Fourier phase and STFT-based estimates of the axial mean spatial frequency profile corresponding to the refractive index profile. Both are expressed in the log-scale. The optical depth range is limited to (1μm, 9μm) to avoid simulation-based boundary artifacts.