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Applied Optics

Applied Optics


  • Vol. 36, Iss. 32 — Nov. 10, 1997
  • pp: 8435–8444

Design of fan-out kinoforms in the entire scalar diffraction regime with an optimal-rotation-angle method

Jörgen Bengtsson  »View Author Affiliations

Applied Optics, Vol. 36, Issue 32, pp. 8435-8444 (1997)

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An algorithm for the design of diffractive optical phase elements (kinoforms) that give rise to fan-out (i.e., spot) patterns was developed and tested. The algorithm is based on the Helmholtz–Kirchhoff rigorous scalar diffraction integral for the evaluation of the electric field behind the kinoform. The optimization of the kinoform phase modulation is performed with an efficient optimal-rotation-angle method. The algorithm permits any spatial configuration of the locations of the desired spots. For example, the spots (all or some) can be located at large angles to the optical axis (nonparaxial case) or they can be located in the near near field of the kinoform, i.e., where the Fresnel approximation is no longer valid. Two examples of fabricated kinoforms designed with this algorithm are presented.

© 1997 Optical Society of America

Original Manuscript: March 14, 1997
Revised Manuscript: May 28, 1997
Published: November 10, 1997

Jörgen Bengtsson, "Design of fan-out kinoforms in the entire scalar diffraction regime with an optimal-rotation-angle method," Appl. Opt. 36, 8435-8444 (1997)

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