title: Simultaneous rotation, orientation and displacement control of birefringent microparticles in holographic optical tweezers.
abstract: We report the experimental implementation of a new method for generating multiple dynamical optical tweezers, where each one of them is generated with an independent linear polarization state with arbitrary orientation. This also allows an independent simultaneous polarization-rotation control. The laser beam, both for generating multiple traps and polarization control, has been modulated using a single reflective nematic liquid crystal with parallel alignment. We present experimental results of controlled displacement, orientation and rotation of birefringent particles. In addition, a simple method for estimating and canceling out the primary astigmatism present in the system is presented.
authors: Center for Research, Instituto Tecnológico Metropolitano, Medellín, Colombia.
authors: A
authors: A
authors: Arias
authors: S
authors: S
authors: Etcheverry
authors: P
authors: P
authors: Solano
authors: J P
authors: JP
authors: Staforelli
authors: M J
authors: MJ
authors: Gallardo
authors: H
authors: H
authors: Rubinsztein-Dunlop
authors: C
authors: C
authors: Saavedra
mesh_terms: D000465:Algorithms; D001703:Biophysics / Q000379:methods*; D001718:Birefringence; D004247:DNA / Q000737:chemistry; D019281:Dimerization; D004867:Equipment Design; D006696:Holography / Q000295:instrumentation* / Q000379:methods; D050866:Liquid Crystals; D052898:Optical Tweezers; D055095:Optics and Photonics / Q000379:methods; D010316:Particle Size; D012399:Rotation; D013314:Stress, Mechanical; D014466:Ultraviolet Rays
chemical_list: D004247:DNA