Study on nonreciprocal radiation and photothermal conversion of VO2-based tunable inverse opal thermal emitter

Wang, Han; Wei, Kaifeng; Cheng, Qing

doi:10.1016/j.ijheatmasstransfer.2023.124627

Cited by 8 publications

(1 citation statement)

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“…The most exciting effect is that the wavelength-specific radiative emission spectrum is not necessarily equal to its directional absorption [24,25]. Emission and absorption in magnetooptical (MO) nanophotonic devices has been actively studied, the generated nonreciprocal effect can lead to a new way for handling heat radiance by breaking the widely-accepted Kirchhoff's law [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Wide-angle and Fano-shape contrast between emission and absorption in hybrid polariton-involved planar structure

Qian,

Xu,

et al. 2024

J. Opt.

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Nonreciprocal light propagation (NLP) in planar structure has become a hot topic because of the pattern-free fabrication process and the potentials for exploring heat transfer and energy management. An effective strategy incorporated with natural van der Waals (vdW) material (α-phase molybdenum trioxide, α-MoO3}), ultra-thin polar crystal (slicon carbide, SiC) thin film and a Weyl semimetal (WSM) interlayer sitting on a metal (silver, Ag) substrate is proposed. The emission and absorption of the suggested device is explored with electromagnetic (EM) simulations that utilizethe 4×4 transfer matrix method (TMM). Angular-resolved emission shows that the Fano-shape of nonreciprocity can be maintained within wide angle range. Tunable Fano resonances (FRs) with different line shapes are demonstrated by varying the structural parameters. Moreover, the enhanced nonreciprocal radiation effect can be observed for both s- and p-polarized incidence waves. The proposal allows simultaneous control of spectral distribution and polarization of radiation, which will facilitate the active design and aplication of mid-infrared (MIR) emitters.Angular-resolved emission shows that the Fano-shape of nonreciprocity can be maintained within wide angle range. Tunable Fano resonances (FRs) with different line shapes are demonstrated by varying the structural parameters. Moreover, the enhanced nonreciprocal radiation effect can be observed for both s- and p-polarized incidence waves. The proposal allows simultaneous control of spectral distribution and polarization of radiation, which will facilitate the active design and aplication of mid-infrared (MIR) emitters.

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