Title: Generation of structured beams in large-Fresnel number degenerate cavities and beam transformation with orbital angular momentum
Authors: Lu, T. H.
Lin, Y. C.
Chen, Y. F.
Huang, K. F.
電子物理學系
Department of Electrophysics
Keywords: degenerate cavity;coherent waves;optical angular momentum
Issue Date: 1-Jan-2010
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.
URI: http://dx.doi.org/10.1117/12.840804
http://hdl.handle.net/11536/146275
ISBN: 978-0-8194-8009-5
ISSN: 0277-786X
DOI: 10.1117/12.840804
Journal: COMPLEX LIGHT AND OPTICAL FORCES IV
Volume: 7613
Begin Page: 0
End Page: 0
Appears in Collections:Conferences Paper


Files in This Item:

  1. 85d4b0ec74089e19e841c533b5d298df.pdf

If it is a zip file, please download the file and unzip it, then open index.html in a browser to view the full text content.