Generation of structured beams in large-Fresnel number degenerate cavities and beam transformation with orbital angular momentum

T. H. Lu, Y. C. Lin, Yung-Fu Chen, Kai-Feng Huang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We employ a large-Fresnel-number laser system to demonstrate the three-dimensional optical coherent waves localized on Lissajous and trochoidal parametric surfaces with Lissajous and trochoidal transverse patterns in degenerate cavities. The coherent structured beams are verified to be composed of degenerate Hermite-Gaussian and Laguerre-Gaussian modes with different longitudinal indices resulted from longitudinal-transverse coupling. As well known, the Hermite- Gaussian modes can be converted into Laguerre-Gaussian modes possessing orbital angular momentum by use of a pair of cylindrical lens. Consequently, we make use of cylindrical lenses to transform the Lissajous structured beams superposed of degenerate Hermite-Gaussian modes into the intriguing trochoidal structured beam possessing optical orbital angular momentum.

Original languageEnglish
Title of host publicationComplex Light and Optical Forces IV
DOIs
StatePublished - 22 Mar 2010
EventComplex Light and Optical Forces IV - San Francisco, CA, United States
Duration: 27 Jan 201028 Jan 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7613
ISSN (Print)0277-786X

Conference

ConferenceComplex Light and Optical Forces IV
CountryUnited States
CitySan Francisco, CA
Period27/01/1028/01/10

Keywords

  • Coherent waves
  • Degenerate cavity
  • Optical angular momentum

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