Figure 3 | Scientific Reports

Figure 3

From: Ultrasensitive nonlinear absorption response of large-size topological insulator and application in low-threshold bulk pulsed lasers

Figure 3

(a) Comparison of the distribution of different Bi2Te3 dispersions (with and without ultrasonic separation) on quartz substrate. The nonlinear transmission measurement was carried on the three circle regions. The film concentration and thickness slightly increase with the number. (b) Morphology of the Bi2Te3 sheets on quartz plate measured by AFM. (c) Corresponding height profile diagram of the three positions marked in (b).

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