Microscopic charge carrier dynamics within non-normal incidence VECSEL cavities

McLaren, Samuel; Kilen, I.; Moloney, Jerome V.

doi:10.1117/12.2583234

Cited by 1 publication

(1 citation statement)

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“…The absorbing power is thus calculated from the substrate, the imaginary part of the dielectric constant. When the structure is fully absorbed, there are numerous electrons stored in the conduction band and holes in the balanced band that results in ionization are Fermidistributions at room temperature [22], [39]. The calculation of the rate performance of the entire absorber device is considering in the following expression, where all in incidence radiation is absorbed without reflection, outside distributed radiations bend and recenter into the structure.…”

Section: A the Incident Energy And Power Dissipationmentioning

confidence: 99%

A Broadband Polarized Metamaterial Absorber Driven by Strong Insensitivity and Proximity Effects

2021

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Artificial electromagnetic metamaterial produces exotic resonance, unusual characteristics not found in nature, but engineers can inherit the characteristics by controlling and manipulating their architecture. The design and realization of dual-band, polarization, and incident angle insensitive metamaterial absorber (MA) is proposed. By manipulating shape and structure, periodic pattern, and dielectric layer thickness a significant way to realize high absorption has been investigated. In order to achieve high absorption a new shape of an octagonal ring (OR), cross-wires (CWs), and cut-off circle (CC) artificial structure have been carefully chosen. The special characteristics of this structure produce a dual resonance and its bandwidth increases compare to the classical absorber. The proposed artificial structure operation suits the Ku-band application, but possible to enhance in C-band. The numerical and experimental results show a dual-band 99.8% at 12.2 GHz and 99.9% at 15.5 GHz resonance is an excellent agreement in theory and numerical analysis. The effects of the constitutive property parameters: dielectric constant (ɛ), magnetic permeability (µ), and negative refractive index (n) are also investigated. The investigation of symmetric design structure shows the polarization-insensitivity and high absorption found even in changing the incident angle. Numerical and experimental results ensured the destructive interference of multiple penetrations which are responsible for the near-unity absorption. An excellent agreement in the absorptivity rates that touches near perfection which is prominent for solar cells, detection, and imaging applications.

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Section: A the Incident Energy And Power Dissipationmentioning

confidence: 99%