27 March 2008 Managing thermal emission: plasmon/photon coupling using diffractive optics technology
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We will discuss a passive thermal emission management surface that can manipulate the direction and wavelength bands of emission. We are designing and fabricating diffractive optics in materials that support surface-polariton plasmons. We use a grating in this material to couple the thermally-generated plasmons to photons. Grating parameters, such as grating depth and duty cycle, are varied to optimize the plasmon/photon coupling efficiency. The grating configuration ensures a phased, radiative response if the plasmon decay length along the surface traverses many grating periods. All of these parameters, material indices and dimensions, determine the specular and angular "shape" of emission.
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S. A. Kemme, S. A. Kemme, A. A. Cruz-Cabrera, A. A. Cruz-Cabrera, D. W. Peters, D. W. Peters, A. R. Ellis, A. R. Ellis, R. D Briggs, R. D Briggs, T. R. Carter, T. R. Carter, S. Samora, S. Samora, } "Managing thermal emission: plasmon/photon coupling using diffractive optics technology", Proc. SPIE 6975, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications IV, 697502 (27 March 2008); doi: 10.1117/12.778529; https://doi.org/10.1117/12.778529

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