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Optical diffusion is an essential process used to manage photons in a wide range of photoelectric systems. This work proposes an approach to fabricate novel optical diffusers by a plasma-processing technique, using helium plasma to form fiberform nanostructures on tungsten thin films. After an annealing procedure in the air for oxidation, the optical properties and the light-diffusing abilities of these nanostructured thin films were studied. The diffusion efficiency of the optical diffusers was analyzed using a transmitted scatter distribution function (TDF), and it was revealed that the diffusion efficiency of a device with an irradiation time of 30 minutes could reach 97%.
Feng et al. (Wed,) studied this question.