Figure 5 | Scientific Reports

Figure 5

From: Exploiting nonlinear properties of pure and Sn-doped Bi2Te2Se for passive Q-switching of all-polarization maintaining ytterbium- and erbium-doped fiber lasers

Figure 5

Experimental setup of the erbium-doped fiber laser (a). Output characteristics of the fiber laser: optical spectrum for the highest output power (b). Average output power and pulse energy as a function of pump power (c). Repetition rate and pulse width as a function of pump power (d). Recorded exemplary pulse trains (e; for BSTS saturable absorber). Fundamental beat note of radio frequency (RF) spectrum, RBW: 10 Hz. Inset: RF spectrum over the 4 MHz span, RBW: 1 kHz (f; for BSTS saturable absorber).

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