Interrelation between various types of optically induced forces

V.P. Torchigin, A.V. Torchigin
Optically induced forces applied to a transparent optical medium are analyzed. It is shown on the basis of various approaches that the density of optically induced forces applied to a homogeneous optical medium located in an inhomogeneous electrical field is equal to zero at a steady-state. This result contradicts that obtained by means of an approach based on the Lorentz density force. An explanation is presented that the Lorentz density force is compensated at a steady-state by other kind of optically induced force. Thus, a calculation of optically induced force based on the approach using the Lorentz force is inconsistent.
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