Saturday, February 22, 2014

Optical trap formation with a four-channel liquid crystal light modulator

A V Korobtsov, S P Kotova, N N Losevsky, A M Mayorova, V V Patlan and S A Samagin

Experiments on the dynamic control of two-dimensional optical trap spatial structure and manipulation of micron-sized dielectric particles are performed with a four-channel liquid crystal modulator. Tweezers with this device can execute the trapping of a single particle and its subsequent relocation along the square trajectory. Also, when shaped as a line segment, the trap can capture several particles and rotate them. Therefore, it is experimentally proven that for certain tasks this device can be a compact and technologically simple alternative to the available commercial multi-pixel liquid crystal modulators.

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