標題: Symmetry property of a generalized Billet's N-split lens
作者: Cheng, Chieh-Jen
Chern, Jyh-Long
光電工程學系
Department of Photonics
關鍵字: Diffraction;Paraxial wave optics;Billet's split lens
公開日期: 1-Oct-2010
摘要: This study examines the diffraction properties of a generalized split N-sector lens originating from Billet's split bi-sector lens. The intensity distributions vary dramatically as the number of split sectors increases, and especially compared with those of the classical Billet's split lens. Nevertheless, the type of lens splitting selected causes the interference pattern of equidistant straight lines in the original Billet's lens to form an N-fold angularly distributed pattern with an angle difference of 2 pi/N. For an odd number of splitting N, there is an additional angle shift of pi/N for the azimuthally distributed patterns of equidistant straight lines. In other words, there are two kinds of symmetry even for simple splitting operations. On the other hand, the peak intensity distribution in the central portion resembles a concentric-circle-like pattern, when N is large as a result of N-beam interference. (C) 2010 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.optcom.2010.05.024
http://hdl.handle.net/11536/149992
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2010.05.024
期刊: OPTICS COMMUNICATIONS
Volume: 283
起始頁: 3564
結束頁: 3568
Appears in Collections:Articles