25 August 2015 1D problems of radiation pressure on elastic solids
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Abstract
We treat the light-matter interaction due to radiation pressure in one dimension using the fundamental, nonrelativistic conservation principles of energy and momentum. Additionally, we assume that the center of mass-energy maintains the same uniform motion if the interaction takes place or not. Since we handle solids as elastic objects, the results are consistent with the principle of causality and agree with recent experimental observations. We analyze the problem of reflection of a light pulse from a fully-reflective mirror and show that its reflection gives rise to an elastic wave with a measurable amplitude and a correct Doppler shift of the reflected pulse. We also analyze the problem of light pulse transmission into an anti-reflection coated, non-dispersive and lossless dielectric, where an elastic wave may as well be accompanied by a mechanical wave escorting the light pulse. We show that the Balazs rigid box thought experiment can be also realized in elastic dielectrics where some of the energy of the incident light is transferred to the wave motion. It follows from our approach that the electromagnetic momentum of the light pulse in the dielectric acquires Abraham’s form only when a single type of the mechanical waves accompanies the interaction.
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Tomaž Požar, Tomaž Požar, Janez Možina, Janez Možina, } "1D problems of radiation pressure on elastic solids", Proc. SPIE 9548, Optical Trapping and Optical Micromanipulation XII, 95480N (25 August 2015); doi: 10.1117/12.2191696; https://doi.org/10.1117/12.2191696
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