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Figure 1

From: Coherent combining of self-cleaned multimode beams

Figure 1

source at 1064 nm. (c) Spatial interference pattern produced by the two self-cleaned output beams, spatially superimposed with a 4° tilt angle (44 kW). (d) Same interference pattern between the two self-cleaned output beams (obtained for 44 kW input power), but spectrally decomposed along wavelength. Note that here, the vertical axis corresponds to the X transverse dimension.

Experimental evidence of phase locking between two self-cleaned beams in GRIN MMFs. (a) Schematic representation of the experimental setup as detailed in the Methods section. (b) Near-field images of the output beams observed for increasing input peak power, independently recorded in the two arms of the Mach–Zehnder interferometer, seeded by the same laser

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