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Proceedings Paper

Optimal design of boundary-modulated diffractive optical elements for general beam shaping
Author(s): Hwi Kim; Byungchoon Yang; Jinhong Park; Byoungho Lee
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Paper Abstract

The inherent feature of the coherent optics is the speckle phenomena. To reduce the spiral speckle in the diffraction image generated by the diffractive optical element, we designed the boundary modulated diffractive optical element. The spiral speckles can be removed by introducing an appropriate smooth initial phase to the image plane and conserving the smoothness of it during the iteration process of the iterative Fourier transform algorithm. To conserve the smoothness of the phase on the image plane, the aperture shape of the diffractive optical element is modified optimally. The diffractive optical element with deformed aperture decreases the transmission efficiency. TO increase the transmission efficiency, the initial phase distribution of the image plane is optimized by use of the genetic algorithm.

Paper Details

Date Published: 3 June 2002
PDF: 10 pages
Proc. SPIE 4659, Practical Holography XVI and Holographic Materials VIII, (3 June 2002); doi: 10.1117/12.469259
Show Author Affiliations
Hwi Kim, Seoul National Univ. (South Korea)
Byungchoon Yang, Seoul National Univ. (South Korea)
Jinhong Park, Seoul National Univ. (South Korea)
Byoungho Lee, Seoul National Univ. (South Korea)

Published in SPIE Proceedings Vol. 4659:
Practical Holography XVI and Holographic Materials VIII
Sylvia H. Stevenson; T. John Trout; Stephen A. Benton; Sylvia H. Stevenson; T. John Trout, Editor(s)

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