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. 2015 Feb 13;5:8445. doi: 10.1038/srep08445

Figure 2. Terahertz in-line hologram of the steel blade of a screwdriver and its reconstructions.

Figure 2

(a), photo of the metal blade. (b), normalised hologram. (c), reconstructed absorption distribution a(x,y). (d), reconstructed phase-shift distribution φ(x,y). (e–f), reconstructed absorption and phase distributions after 100 iterations, respectively.