Transformation of the Microwave Resonance Properties of Metastructures with CdS and CdSe at One- and Two-Photon Excitation

• Published in: JETP letters Vol. 114; no. 9; pp. 507 - 516
• Main Authors: Kraftmakher, G. A., Butylkin, V. S., Kazantsev, Yu. N., Mal’tsev, V. P., Fisher, P. S.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.11.2021; Springer Nature B.V
• Subjects: Atomic; Biological and Medical Physics; Biophysics; Cadmium sulfide; Complex permittivity; Dipoles; Energy gap; Excitation; Interferometers; Luminescence; Microwave frequencies; Microwave resonance; Microwave transmission; Molecular; Optical and Plasma Physics; Optical fibers; Optical radiation; Optics and Laser Physics; Particle and Nuclear Physics; Photons; Physics; Physics and Astronomy; Quantum Information Technology; Solid State Physics; Spintronics; Transformations; Waveguides
• ISSN: 0021-3640; 1090-6487
• DOI: 10.1134/S0021364021210098

Photonically controlled metastructures containing resonant conducting dipole and chiral elements with CdS and CdSe in gaps have been proposed, implemented, and studied in a waveguide and a meta-interferometer in the range of 3–12 GHz. It has been found experimentally for the first time that the variation of the optical radiation power P λ guided by the optical fiber to the region of the discontinuity when the photon energy h ν is both above the width of the band gap E g [ h ν(λ 1 = 0.53 μm) > E g ] and below it [ h ν(λ 2 = 0.97 μm) < E g ] results in the transformation of the resonant response of the corresponding element (smooth variation of the intensity almost to the transparency level accompanied by a decrease in the frequency) in the microwave transmission spectrum, as well as in the transformation of the stopband in the interferogram of the meta-interferometer with a severalfold change in the width. In addition, under λ 2 irradiation, orange–red luminescence identified as a manifestation of anti-Stokes luminescence is observed on the CdS surface. Direct cavity measurements of the complex permittivity ε GHz of the CdS and CdSe samples have demonstrated an increase in both Imε GHz (with approaching saturation at λ 2 ) and Reε GHz with increasing P λ . Characteristics of the identical manifestation of physical effects at microwave frequencies under one- and two-photon excitation have been revealed in application to the light energy flux densities S 1 (at P λ1 ) and (at P λ2 ): , .