Theoretical approach of the mechanical action modelling, based on the interaction of the evanescent wave, arising due to the total internal reflection (TIR) at the birefringent microplate-air interface, with the surface roughness, is proposed. The value of optical forces, caused by spin and orbital momentum of evanescent wave, generated by linearly polarized incident wave with the azimuth of polarization of ±45° is estimated. Conditions for which the action of transverse component of optical force is significant are determined. The proposed approach spread the possibilities of optical manipulation of microand nanoobjects in near field.
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