Fig. 5: TPA properties of 1–3 L and bulk PdSe2 flakes.
From: Giant nonlinear optical activity in two-dimensional palladium diselenide
a–c Nonlinear transmittance of 1–3 L PdSe2. The blue, green, and yellow dots represent the experimental data, while the solid red lines show the fitted results using the TPA model. The TPA coefficients (β) of 1, 2, and 3 L PdSe2 are 4.16 × 105, 2.58 × 105, and 1.51 × 105 cm GW−1, respectively. d Nonlinear transmittance of bulk PdSe2. The blue dots represent the experimental results, while the solid red lines show the fitted results using the TPA model. The TPA coefficient (β) of bulk PdSe2 is 1.80 × 104 cm GW−1. All the above measurements were performed under 800 nm excitation.
