Effects of hydrostatic pressure, temperature and angle of incidence on the transmittance spectrum of TE mode in a 1D semiconductor photonic crystal

In this paper, we study the effects of hydrostatic pressure, temperature and angle of incidence on the transmittance spectrum of TE mode of a one-dimensional photonic crystal, using the transfer-matrix method. We consider that the crystal is formed by alternated layers of air and GaAs, with the dielectric constant of GaAs as a function of the temperature and pressure applied. We found that the spectrums dependence on temperature is negligible, the optical response of the system is due mainly to the pressure applied. When increasing the hydrostatic pressure, the spectrum shifts to a short-wavelength, which is caused by the decrease of the dielectric constant of GaAs. These results agree with the electromagnetic variational theorem. We also found if the angle of incidence of the modes increases, the band width increases compared to the normal incidence modes.