Table 1 Relative third-order susceptibility of tBLG compared with the THG intensity of neutral MLG at various sample positions at Vg = 0 V (nongated) and –1.8 V

From: Enhanced third-harmonic generation by manipulating the twist angle of bilayer graphene

Sample position \({\raise0.5ex\hbox{$\scriptstyle {\chi _{tBLG}^{(3)}}$}\kern-0.1em/\kern-0.15em \lower0.25ex\hbox{$\scriptstyle {\chi _{MLG}^{(3)}}$}}\)

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

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