. 2024 Apr 15;24(16):5085–5092. doi: 10.1021/acs.nanolett.4c00776

Table 1. Values of Nonlinearity Order and R² of THG, 4HG, and 5HG Log–Log Fitting.

fitting nonlinearity	THG	R²	4HG	R²	5HG	R²
Al/Au/CuS	2.98	0.99	3.91	0.97	5.29	0.91
Al/CuS	3.05	0.99	4.07	0.91	4.84	0.89
Au/CuS	2.93	0.99	3.62	0.98	4.47	0.96
Al	3.08	0.99	N/A	N/A	4.62	0.98

Table 1. Values of Nonlinearity Order and R2 of THG, 4HG, and 5HG Log–Log Fitting.