Optomechanical deformation and strain in elastic dielectrics

摘要: Light forces induced by scattering and absorption in elastic dielectrics lead to local density modulations deformations. These perturbations turn modify light propagation the medium generate an intricate nonlinear response. We generalize analytic approach where one-dimensional media of inhomogeneous is modelled as a result multiple between polarizable slices. Using Maxwell stress tensor formalism we compute optical iteratively self-consistent distributions back-action balances gradient- forces. For optically trapped dielectric derive dependence trap position, stiffness total deformation on object's size field configuration. Generally trapping enhanced deformation, which exhibits periodic change stretching compression. This strongly deviates from qualitative expectations based photon momentum crossing surface dielectric. conclude that have be treated volumetric description using at inappropriate.