Fig. 4: CPL spectra.
From: Chiral lanthanide lumino-glass for a circularly polarized light security device

CPL spectra of Eu(+tfc)-tmpo(2) (black line) and Eu(−tfc)-tmpo(2) (red line).
From: Chiral lanthanide lumino-glass for a circularly polarized light security device

CPL spectra of Eu(+tfc)-tmpo(2) (black line) and Eu(−tfc)-tmpo(2) (red line).