ABSTRACT
The optical trapping and rotation of micro-objects are based on the well-known phenomenon of light pressure. After developing lasers it became possible to generate the radiation pressure force sufficient for acceleration, deceleration, deflection, direction and stable trapping of microscopic objects, whose dimensions range from tens of nanometers to tens of micrometers. If the refractive index is less than the refractive index of the particles, under certain conditions one can observe the 'trapping' of the particle along the Z axis, not only in the case of two colliding beams, but also in the case of a focused Gaussian beam. Calculation of the moment of the force was conducted depending on the size and shape of the integration region encompassing the micro-object under study. The geometrical optics approach has been used which gives approximate results. The geometrical optics approach has been used in the calculation of the simplest optical traps.
