Compact optical tweezer with the capability of dynamic control

The extension of capabilities towards the formation of controlled complex-shaped optical traps is demonstrated for the compact laser tweezer based on the four-channel LC modulator. The experimental results on the yeast cell manipulation, including the particles larger than 10 μm, are presented. The capture and confinement of the object with the dimensions 37 μm × 13 μm was realized by means of the use of the ellipse-shaped trap. The maximal escape velocity of this object was about 20 μm/s.