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Author Shift, Phase ♦ Horváth, Z. L. ♦ Bor, Zs. ♦ Linde, D. Von Der
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Superluminal Velocity ♦ Femtosecond Pulse ♦ Phase Distribution ♦ Con-verging Spherical Light Wave ♦ Superluminal Pulse Propagation ♦ Rayleigh Range ♦ Phase Anomaly ♦ Optical Axis ♦ Aberration-free Lens ♦ Theoretical Treatment ♦ Phase Differ-ence ♦ Converging Perfect Spherical Wave ♦ Diffraction Result ♦ Three-dimensional Neighbourhood ♦ Several Author ♦ Group Velocity ♦ Gouy Phase Shift ♦ Interesting Result ♦ Phase Behaviour ♦ Gaus-sian Beam ♦ Circular Aperture ♦ Focus Differs
Abstract Abstract. The phase and the group velocities are calcu-lated in a three-dimensional neighbourhood of the focus of an aberration-free lens illuminated by a spatially Gaus-sian beam. The Gouy phase shift caused by the diffraction results in superluminal pulse propagation on the optical axis within the Rayleigh range. PACS: 42.10, 42.60.E The study of the intensity and phase distribution of a con-verging spherical light wave passing through a circular aperture has been undertaken by several authors [1—3]. One of the most interesting results of these treatments is that the phase behaviour near the focus differs from that of a converging perfect spherical wave. This phase differ-ence discovered by Gouy is called phase anomaly. The predictions of the theoretical treatments have been veri-
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 1996-01-01