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Figure 1

From: No-scanning 3D measurement method using ultrafast dimensional conversion with a chirped optical frequency comb

Figure 1

Measurement principle based on spectral interferometry with chirped pulses. Spectral interferometry with a chirp-free reference pulse and (a) chirp-free and (c–g) chirped probe pulses. (a and c) Space diagram of the pulses. (b and d) Schematics of interference fringe spectra. Minimum fringe frequency (MFF) indicates the region showing the broadest fringe. (e) Space diagram of reference and probe pulses reflected from a target. (f) Schematic of interference spectra. (g) Relation between wavelengths showing MFF and delay.

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