Harnessing a Dielectric/Plasma Photonic Crystal as an Optical Microwave Filter: Role of Defect Layers and External Magnetic Fields.

We investigate the transmittance spectrum of a multichannel filter composed of dielectric (A) and plasma (P) materials in the microwave region within the transfer matrix formalism. Two configurations of the proposed filter are studied under the influence of an applied magnetic field: (1) a periodic structure containing (A/P)N unit cells surrounded by air and (2) the introduction of a second dielectric material (D) acting as a defect layer to produce an (AP)N/2/D/(AP)N/2 structure. Our findings reveal that in the periodic case, the number of resonant states of the transmittance increases with number N; however, the observed blue and red shifts depend on the intensity and orientation of the applied magnetic field.

Physical and Dielectric Properties of Ni-Doped InS Powders for Optical Windows in Thin Film Solar Cells.

This paper reports the effect of Nickel (Ni) on indium sulfide (InS) powder. This work presents a systematic study of the physical and dielectric properties of InSNi powders with 0, 2, 4, and 6 at.% of nickel.