Iterative algorithms for off-axis double-phase computer-generated holograms implemented with phase-only spatial light modulators.
Two iterative methods for the calculation of double-phase holograms (DPHs) are described. The calculation of DPHs by any of these methods allows one to qualitatively reconstruct the amplitude and phase of a wavefront on a format up to 50% of the spatial size of a reconstruction order (in the previous methods, this format was <or approximately 35%). It is shown that the reconstruction can be realized in this case not only into the 0, +1, or -1 orders, as usual, but also into a half-order (+1/2 or -1/2). The diffraction efficiency of phase-only DPHs is also discussed. The results of numerical and optical experiments are presented.
Kuzmenko
Alexander V
AV
International Center Institute of Applied Optics, National Academy of Science of Ukraine, Kyiv, Ukraine. avk@iao.kiev.ua
Yezhov
Pavel V
PV
D000465:Algorithms; D003201:Computers; D004058:Diffusion; D005583:Fourier Analysis; D007091:Image Processing, Computer-Assisted; D008027:Light; D015233:Models, Statistical; D055095:Optics and Photonics; D012984:Software