Real-time dynamic holographic optical tweezers suffer from an intrinsic limitation. The diffractive optical element, which is the key to reconstruction, requires time for the calculation and physical constraints to be satisfied. In particular, when working in a volume these requirements become highly expensive. Quadrant kinoform represents an alternative to traditional 3D holograms. A spatial domain multiplexing combined with lens term phase profiles allow the independent addressing and control of different planes in the reconstruction volume. The bidimensional holograms used pose less severe physical constraints and the reduced size leads, at the cost of a lower reconstruction resolution, to a consistent speedup in the computation time thus improving real-time interactions.
© 2007 Optical Society of America
Original Manuscript: December 18, 2006
Revised Manuscript: March 26, 2007
Manuscript Accepted: March 27, 2007
Published: July 6, 2007
Vol. 2, Iss. 8 Virtual Journal for Biomedical Optics
Federico Belloni and Serge Monneret, "Quadrant kinoform: an approach to multiplane dynamic three-dimensional holographic trapping," Appl. Opt. 46, 4587-4593 (2007)