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Many optical systems use acousto-optics for fast steering of light. However,acousto-optic (AO) light diffraction permits manipulation and shaping of lightfields in a much broader sense including holography. While acousto-opticdevices operate at incontestable speed, they are one dimensional (1D)diffraction devices depending on analog serial data transfer and as such have amode of use distinguished from common 2D spatial light modulators. Combinationwith an amplified laser source allows to clock the serial buildup of AOdiffraction patterns for avoidance of phase aberration in the output beam dueto acoustic wave progression. Pseudo 2D holography is established with twocrossed AO deflectors for biaxial spatial modulation of the input phase, andoptionally also of its amplitude. In this configuration, acousto-optics permitslight patterning into micrometer-scale 2D point grids with the possibility toswitch the pattern between individual laser pulses. We describe algorithms forderiving AO holograms for either pure phase modulation or for a co-modulationof amplitude. Computationally reconstructed phase holograms show focal patternsin presence of side lobes. Side lobes are entirely suppressed by amplitudemodulation, though at the expense of reduced optical power transmission.

Acousto-optic holography for micrometer-scale grid patterning of amplified laser pulses with single-pulse accuracy