Fig. 8: Demonstration of the stretching and compression of the modal interference pattern during the pump modulation. | Light: Science & Applications

Fig. 8: Demonstration of the stretching and compression of the modal interference pattern during the pump modulation.

From: Modal energy transfer by thermally induced refractive index gratings in Yb-doped fibers

Fig. 8

a The signals of the stability photodiode during a pump modulation at 50 W average output power with a modulation frequency of 50 Hz and modulation depths (peak to valley) of 20 W (top graph, blue) and 40 W (bottom graph, red). b The number of periods of the MIP that are compressed and stretched during a single period of the pump modulation as a function of the modulation depth (peak to valley)

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