Figure 7.

(a) R_p responses for different incident angles ranging from 0.92 to 0.98. The applied potential ${\psi }_0$ of 0 V was applied at the incident wavelength λ of 632.8 nm; (b) R_p responses when different voltage levels were applied. The responses were simulated with the total gold thickness of 47 nm and the incident wavelength λ of 632.8 nm.