Computer-generated holograms in conjunction with spatial light modulators (SLMs) offer a way to dynamically generate holograms that are adapted to specific tasks. To use the full dynamic capability of the SLM, the hologram computation should be very fast. We present a method that uses the highly parallel architecture of a consumer graphics board to compute analytical holograms in video real time. A precice characterization of the SLM (Holoeye LC-R-2500) and the adaption of its settings to our near-infrared application is necessary to guarantee an efficient hologram reconstruction. The benefits of a fast computation of adapted holograms and the application of an efficient SLM are demonstrated by measuring the trapping forces of holographic tweezers.
© 2006 Optical Society of America
Optical Trapping and Tweezing
Original Manuscript: May 27, 2005
Revised Manuscript: July 29, 2005
Manuscript Accepted: July 29, 2005
Vol. 1, Iss. 3 Virtual Journal for Biomedical Optics
Marcus Reicherter, Susanne Zwick, Tobias Haist, Christian Kohler, Hans Tiziani, and Wolfgang Osten, "Fast digital hologram generation and adaptive force measurement in liquid-crystal-display-based holographic tweezers," Appl. Opt. 45, 888-896 (2006)