title: Implementation of pseudo-nondiffracting beams by use of diffractive phase elements.
abstract: We report the experimental implementation of pseudo-nondiffracting beams by use of diffractive phase elements (DPE's). Based on the conjugate-gradient method presented in J. Opt. Soc. Am. A 15, 144-151 (1998), these DPE's are designed and fabricated on a flat quartz substrate. The experimental results show that the performance of the fabricated DPE's is in good agreement with the theoretical prediction.
authors.forename: R
authors.initials: R
authors.lastname: Liu
authors.forename: B Z
authors.initials: BZ
authors.lastname: Dong
authors.forename: B Y
authors.initials: BY
authors.lastname: Gu