Fig. 11: Circularly polarized light to twisted exciton.
From: Conversion of twisted light to twisted excitons using carbon nanotubes

Exciton populations in a 4 nm long (3, 3) CNT illuminated by right-hand circularly polarized light (p9), right-hand circularly polarized light with spin = −1 and twisted light with PAM = −1 of the same amplitude (p10), and right-hand circularly polarized light and twisted light with PAM = 1 of the same amplitude (p11). The CNT is initially in the ground state. The p1 = p3 curve is reproduced from Fig. 8.