Analyses of pseudo-nondiffracting beams at oblique incidence

Jyh Rou Sze, An Chi Wei, Fong Zhi Chen

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We design three types of diffractive optical elements (DOEs) which generate pseudo-nondiffracting beams (PNDBs) in different regions by using the conjugate gradient method. In order to analyze the influence of the tilt angles of the DOEs, the coordinate-transformation method is used to simplify the calculation. The uniformity of the out-coupling illuminance along the optical axis is calculated. The analyzed results show that when the tilt angle increases, the uniformity in the region [140 mm, 200 mm] has more violent fluctuations than those in the regions [280 mm, 340 mm] and [380 mm, 520 mm]. The analyses also reveal that the uniformity of DOEs with a longer focal length is less sensitive to the tilt angle, and some points within the PNDB region have small variations of axial illuminance while the tilt angle increases.

Original languageEnglish
Pages (from-to)173-178
Number of pages6
JournalApplied Physics A: Materials Science and Processing
Issue number1
StatePublished - Oct 2010


Dive into the research topics of 'Analyses of pseudo-nondiffracting beams at oblique incidence'. Together they form a unique fingerprint.

Cite this