Abstract

Fresnel-type diffractive optical elements (DOEs) for general beam shaping of monochromatic, spatially incoherent light are demonstrated. Direct and indirect methods, i.e., adding a lens' phase to the designed Fraunhofer-type DOEs, are used for the design. The indirect method can reduce the calculation time by approximately half without loss of design accuracy. Two different design examples are shown. For one design the direct method gives a maximum sidelobe intensity of $5.0\%$ of the maximum intensity in the signal window. For the second design the indirect method gives $23.0\%$ of this value. The generated patterns can maintain their basic shapes over a long distance. The elements have been fabricated by directly using gray-scale commercial slides as masks. Experimental results are in close agreement with numerical predictions.

© 2006 Optical Society of America

Design of two-dimensional diffractive optical elements for beam shaping of multicolor light-emitting diodes

Huarong Gu, Mengzhu Chen, Qixia Wang, and Qiaofeng Tan
Appl. Opt. 57(10) 2653-2658 (2018)

Beam-shaping longitudinal range of a binary diffractive optical element

Renaud de Saint Denis, Nicolas Passilly, Mathieu Laroche, Tayeb Mohammed-Brahim, and Kamel Aït-Ameur
Appl. Opt. 45(31) 8136-8141 (2006)

Comparison of simulated quenching algorithms for design of diffractive optical elements

J. S. Liu, A. J. Caley, A. J. Waddie, and M. R. Taghizadeh
Appl. Opt. 47(6) 807-816 (2008)

Extended focus diffractive optical element for Gaussian laser beams

Michael A. Golub, Valery Shurman, and Israel Grossinger
Appl. Opt. 45(1) 144-150 (2006)

Stray-light effects of diffractive beam-shaping elements in optical microsystems

Markus Rossi and Thomas Hessler
Appl. Opt. 38(14) 3068-3076 (1999)