A photonic switching mechanism using polarized light incident on dielectric surfaces.

Our experimental studies indicate that a probe laser of energy $E_{L} $ assisted by a capacitor voltage of energy $E_{C} $ induces vibrations of the dipoles located on the dielectric surface at higher frequencies as compared with the case when the probe laser is alone. This finding is consistent with a scalar addition of energies and produces a shift in the energy: $E=E_{L} +E_{C} =\;\hslash \left( {\omega_{L} +\omega_{C} } \right)$ absorbed by dipoles, and implicitly, of the refraction index (n) of the dielectric surface. Experimentally, we analyze the interaction between light and certain dielectric surfaces using the relative permittivity ($\varepsilon _{R} )$ extracted from accurate measurements of refractive indices for light incident at Brewster angle [1]. We can show that the variation of $\varepsilon_{R} $, which is proportional with n$^{2}$, is due to a competition between an increase in the vibrational frequency of the dipoles on the dielectric surface interacting with the probe laser and an increase in the polarization of the electric dipoles [2]. We find that heavy silica-based glasses, such as flint glasses do not allow the dipoles to rotate freely at low capacitor voltages due to the presence of massive PbO molecules. Therefore, lesser dense dielectrics, such as crown glasses, could be more efficient photonic switching devices. [1] C. Bahrim and W. Hsu, \textit{American Journal of Physics }\textbf{77}, 337 (2009). [2] C. Bahrim,~et al., \textit{Journal of Applied Mathematics and Physics}\textbf{\textit{~}}\textbf{2, }1105 (2014).