RT Journal Article
T1 Near-field shaping with two binary diffractive optical elements in tandem
A1 Herrera Fernández, José María
A1 Sánchez Brea, Luis Miguel
A1 Bernabeu Martínez, Eusebio
AB Diffractive optical elements (DOEs) are commonly used for beam shaping in the far field. In the present work, we develop an algorithm for near-field beam shaping using a double DOE system with binary modulation, so that it can be easily implemented on a glass substrate. In a first stage, the first amplitude DOE is equal to the target intensity distribution and the second phase DOE is obtained using a simple and fast iterative technique. In order to improve the optical efficiency of the system, we also analyze the behavior of the algorithm when the first DOE is not equal to the target image, but a widened version of it. Several numerical simulations are obtained, and an analysis of tolerances is performed.
PB Elsevier Science BV
SN 0030-4018
YR 2013
FD 2013-06-15
LK https://hdl.handle.net/20.500.14352/33595
UL https://hdl.handle.net/20.500.14352/33595
LA eng
NO © 2013 Elsevier B.V.This  work has been partially supported by project DPI2011-27851  of the Ministerio de Ciencia e Innovación of Spain and by program  SEGVAUTO P2009/DPI-1509 of Comunidad de Madrid.We  thank A. González-Cano for his help.
NO Ministerio de Ciencia e Innovación (MICINN)
NO Comunidad de Madrid, España
DS Docta Complutense
RD 15 abr 2025