Rotationally invariant Fresnel lens-encoded circular harmonic binary phase-only filters.
Binary phase-only circular harmonic filters show an angular dependence on the rotational orientation of the input object, which can be removed by encoding a Fresnel lens onto the filter. Theoretical and experimental results are presented using these filters written onto the magnetooptic spatial light modulator.
Davis
J A
JA
York
L R
LR
Cottrell
D M
DM