Abstract
This paper presents a study on laser intensity distributions where field enhancements occur due to scattering by spherical sapphire particles and under conditions of different wavelengths and substrate media. A sapphire micro particle concept is employed to determine the effects of light–particle interaction with a particle refractive index approaching 2 (n ≤ 2). Mie scattering software is used to perform the computations for the presented results. Near-field effects are a consequence of irradiation scattering that occurs from spherical particles, and these effects play a fundamental role in nano-patterning and in diverse laser cleaning environments. Efficient laser cleaning requires the optimization of many parameters, and these simulated results involving sapphire particles at different laser wavelengths and in different substrate media allow for more judicious experimental implementations.
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