Reflection and transmission of a wave incident on a slab with a time-periodic dielectric functionϵ(t)

Theory of wave-front reversal of short pulses in dynamically tuned zero-gap periodic systems

“…Only such nonadiabatic modulation ensures a frequency-independent frequency conversion resulting in a reversed pulse which is an accurate replica of the forward-propagating pulse. In that regard, we note that although the modulation can have fast spectral components, the possibility of transitions to higher 1 Time modulations of materials have also been studied in more general contexts (see e.g., [65][66][67] for some recent studies).…”

Non-reciprocity using quadrature-phase time-varying slab resonators

“…In this section, the transmission of normal incident wave on a single FP slab whose permittivity changes periodically with time is analyzed. This problem has already been solved in [20], where Floquet-Bloch theorem and field matching at boundaries was employed to solve the problem. However, the solution was limited to a single slab, and no general solution was suggested that could handle multiple slabs or layers with different permittivity values.…”

“…The elements of the transfer matrices are introduced in more detail in Appendix A. The interested reader can investigate that the proposed formulation can accurately reproduce the results of [20]; however, we do not bring the results here for the sake of brevity. The formulation presented provides accurate results in terms of the transmitted and reflected waves and harmonics of a time-varying FP slab ( Fig.…”

Propagation of Optical Pulses in Dynamic Media: A Time Transformation Method

“…Sánchez et al investigated the interaction of light with a dielectric slab with a time-periodic dielectric function (t). More specifically, the transmission and reflection coefficients were derived [40], and the pulse case was discussed in detail [41]. Recently, Daniel et al found that…”