Phase Contrast Produces Dynamic, Multiple-Beam Optical Tweezers
Oct 1, 2002 — Using generalized, phase-contrast-based encoding onto a spatial light modulator, researchers at the Risø National Laboratory in Roskilde, Denmark, have demonstrated a nonmechanical method to produce an array of optical trapping beams whose position, size, shape and intensity can be individually manipulated. They created the trapping patterns on the parallel-aligned, liquid-crystal-type light modulator from Hamamatsu Photonics with a Sony VGA-resolution liquid crystal projector element...