Comment on Radiative transfer over small distances from a heated metal.
We show that there is no contradiction between the results presented by Pan [Opt. Lett. 25, 369 (2000)] and the 1/L(2) dependence of the radiative energy flux between two half-spaces separated by a small vacuum gap of width L obtained by Polder and Van Hove [Phys. Rev. B 4, 3303 (1971)] and by Loomis and Maris [Phys. Rev. B 50, 18517 (1994)].
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Mulet
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Joulain
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Carminati
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Greffet