Fig. 4: Spectral dynamics of 3D soliton molecules. | Nature Communications

Fig. 4: Spectral dynamics of 3D soliton molecules.

From: Real-time multispeckle spectral-temporal measurement unveils the complexity of spatiotemporal solitons

Fig. 4: Spectral dynamics of 3D soliton molecules.The alternative text for this image may have been generated using AI.

a, d Spectral evolutions in speckle grains SG1 and SG2. b, e Close-ups as indicated in a and d, respectively. As can be observed, the soliton molecules in different speckle grains have different spectral widths and temporal separations, which can be identified by the density of the interference fringes. c, f Phase evolutions of the interference fringes of a and d, respectively. Please note that, different from the birth stage, here the time-stretch spectroscopy is valid for the whole evolution in the established stage, and thus the “Wavelength” axis is moved to the left for differentiating it from that of the birth stage, the same case for Figs. 5 and 6.

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