The effect of the hydrostatic pressure and temperature on the defect mode in the band structure of one-dimensional photonic crystal

Abstract

In this work using the plane wave expansion method we study the effects of hydrostatic pressure and temperature on the defect mode in the band structure of a one-dimensional photonic crystal. This crystal made of alternating layers of GaAs and air, it is considered that the defect is GaAs with a dielectric constant as a function of pressure and temperature. It is found within the gap of forbidden frequencies the presence of a defect mode, which presents a shift to high frequencies as the pressure increases due to a decrease in the dielectric constant of GaAs. These results are in accordance with the electromagnetic variational theorem. Additionally, it is found that increasing the defect thickness increases the number of modes within the gap of prohibited frequencies.