title: Compact multimode fiber beam-shaping system based on GPU accelerated digital holography.
abstract: Real-time, on-demand, beam shaping at the end of the multimode fiber has recently been made possible by exploiting the computational power of rapidly evolving graphics processing unit (GPU) technology [Opt. Express 22, 2933 (2014)]. However, the current state-of-the-art system requires the presence of an acousto-optic deflector (AOD) to produce images at the end of the fiber without interference effects between neighboring output points. Here, we present a system free from the AOD complexity where we achieve the removal of the undesired interference effects computationally using GPU implemented Gerchberg-Saxton and Yang-Gu algorithms. The GPU implementation is two orders of magnitude faster than the CPU implementation which allows video-rate image control at the distal end of the fiber virtually free of interference effects.
authors: Martin
authors: M
authors: Plöschner
authors: Tomáš
authors: T
authors: Čižmár
mesh_terms: D000162:Acoustics; D000465:Algorithms; D003196:Computer Graphics; D003201:Computers; D006696:Holography / Q000295:instrumentation*; D055100:Optical Fibers