Table 1.

Relative third-order susceptibility of tBLG compared with the THG intensity of neutral MLG at various sample positions at V_g = 0 V (nongated) and –1.8 V

Sample position ${\chi }_{tBLG}^{\left(3\right)}/{\chi }_{MLG}^{\left(3\right)}$	1 (MLG)	2	3	4	5	6	7
Vg = 0 V	1.0	1.03	0.94	0.91	1.30	1.46	0.91
Vg = –1.8 V	3.67	2.54	2.46	2.71	3.86	3.02	2.72