Fig. 4: Temporal cooling behavior of the samples.
The temperature changes of the samples A, B, and C are plotted as a function of time, respectively, when exposed to the high-power 1053 nm laser. The ambient temperature was the room temperature of approximately 20 ∘C. The red lines represent the experimental results and the blue lines represent the fitting of the exponential function in Eq. (4) to the experimental data. The obtained \(\Delta {T}_{\max }\) and ηext parameters from fitting are presented in Table 2.
