Measurement of near-field thermal emission spectra using an internal reflection element

Article

关键词: RADIATIVE HEAT-TRANSFER;    PERFORMANCE;    RECTIFICATION;    IMPACTS;   

DOI  :  10.1103/PhysRevB.100.235450

来源: SCIE

【 摘 要 】

We describe a simple and robust method using an internal reflection element to measure the spectra of near-field thermal emission. We experimentally demonstrate the spectrally narrow peaks of near-field thermal emission by isotropic media due to the excitation of surface phonon polaritons in quartz and amorphous silica and due to the frustrated total-internal-reflection modes in amorphous silica and polytetrafluoroethylene. Additionally, we demonstrate the broadband near-field thermal emission of hyperbolic modes in hexagonal boron nitride, which is an anisotropic uniaxial medium. We also present a theoretical approach based on the fluctuational electrodynamics and dyadic Green's functions for one-dimensional layered media for accurately modeling the measured spectra.

【 授权许可】

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