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Direct observation of Gouy phase shift in a propagating optical vortex

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Title: Direct observation of Gouy phase shift in a propagating optical vortex
Authors: Hamazaki, Junichi Browse this author
Mineta, Yuriya Browse this author
Oka, Kazuhiko Browse this author →KAKEN DB
Morita, Ryuji Browse this author
Keywords: Optical devices : Spatial light modulators
Other areas of optics : Berry's phase
Issue Date: 4-Sep-2006
Publisher: Optical Society of America
Journal Title: Optics Express
Volume: 14
Issue: 18
Start Page: 8382
End Page: 8392
Abstract: Direct observation of Gouy phase shift on an optical vortex was presented through investigating the intensity profiles of a modified LG_p^m beam with an asymmetric defect, around at the focal point. It was quantitatively found that the rotation profile of a modified LG_p^m beam manifests the Gouy phase effect where the rotation direction depends on only the sign of topological charge m. This profile measurement method by introducing an asymmetric defect is a simple and useful technique for obtaining the information of the Gouy phase shift, without need of a conventional interference method. In addition, the 3-dimernsional trajectory of the defect was found to describe a uniform straight line.
Rights: © 2006 Optical Society of America, Inc.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 浜崎 淳一

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