Fig. 6: Strength of the negative energy transfer as a function of the average output power below the TMI threshold. | Light: Science & Applications

Fig. 6: Strength of the negative energy transfer as a function of the average output power below the TMI threshold.

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

Fig. 6

a The strength of the negative energy transfer below the TMI threshold, represented by the HOM integral as a function of the average output power with a pump modulation with 50 Hz modulation frequency and ±50 W modulation depth; the inset represents a schematic diagram of the calculated HOM integral (green-shaded area). b The evolution of the strength of the maximum negative energy transfer as a function of the average output power, including experimental data (blue dots) and a fit curve according to Eq. (1) (red dashed line); the inset shows a schematic diagram of the calculated maximum negative ET (green arrow)

Back to article page