Symmetry dependence of holograms for optical trapping.
No iterative algorithm is necessary to calculate holograms for most holographic optical trapping patterns. Instead, holograms may be produced by a simple extension of the prisms-and-lenses method. This formulaic approach yields the same diffraction efficiency as iterative algorithms for any asymmetric or symmetric but nonperiodic pattern of points while requiring less calculation time. A slight spatial disordering of periodic patterns significantly reduces intensity variations between the different traps without extra calculation costs. Eliminating laborious hologram calculations should greatly facilitate interactive holographic trapping.
Curtis
Jennifer E
JE
Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany. Jennifer.Curtis@urz.uni-heidelberg.de
Schmitz
Christian H J
CH
Spatz
Joachim P
JP
D000465:Algorithms; D006696:Holography / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008846:Micromanipulation / Q000379:methods*; D010812:Physical Stimulation / Q000379:methods*