Open AccessPolarization coded aperture
Author(s) -
Wanli Chi,
Kaiqin Chu,
Nicholas George
Publication year - 2006
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.006634
Subject(s) - optics , polarization (electrochemistry) , fresnel zone , diffraction , physics , aperture (computer memory) , ptychography , light intensity , chemistry , acoustics
Two examples are presented to illustrate the advantages of polarization coded apertures, in which the incoming light will rotate its polarization at a portion of an aperture. In the first example the depth of field of a diffraction limited lens is increased without sacrificing the light throughput; in the second example the axial focal intensity of a pixelated Fresnel zone plate is increased by 100%. Both examples work for linearly polarized or unpolarized illumination.