Holographic quarterwave plates.
Quarterwave plates can be made as holographic gratings in positive photoresist. We studied the effect of the grating period and relief depth on the phase retardation and on the rotation of the polarization of the transmitted light. Experiments were performed with gratings of different periods, which also exhibit an antireflection property.
Cescato
L H
LH
Gluch
E
E
Streibl
N
N