Fast digital hologram generation and adaptive force measurement in liquid-crystal-display-based holographic tweezers.
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.
Reicherter
Marcus
M
Institut für Technische Optik, Pfaffenwaldring 9, 70569 Stuttgart, Germany.
Zwick
Susanne
S
Haist
Tobias
T
Kohler
Christian
C
Tiziani
Hans
H
Osten
Wolfgang
W