轴棱锥
光学
贝塞尔函数
近轴近似
镜头(地质)
贝塞尔光束
梁(结构)
光线追踪(物理)
瓶子
物理
光学(聚焦)
激光束
材料科学
激光器
复合材料
作者
Ming Wei,Wen Long Shiao,Yi Tse Lin
标识
DOI:10.1016/j.optcom.2004.11.092
摘要
The focusing properties of a Bessel beam generated using an axicon are investigated. The distance between the axicon and the focused lens is tuned to transform the focused beams from bottle beams, with a dark focus surrounded by regions of higher intensity, to hollow beams. The evolutions of these beams are illustrated simply using geometrical structures and the paraxial ray tracing, and are experimentally verified. A specific case in which the focusing behavior approaches that of an ideal Bessel beams is also considered; the experimental results agree with theoretical predictions.
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