Light beams with very high orbital angular momentum

J. Courtial, K. Dholakia, L. Allen, M. J. Padgett

Research output: Contribution to conferencePaper

Abstract

A mathematical treatment has been given to define the angular momentum per photon transferred to a collimated elliptical Gaussian beam with beam waists wx and wy and wave number k incident on a cylindrical lens of focal length f, aligned at an angle of α to the axes of the elliptical mode. The orbital angular momentum is limited only by the f number and the aperture of the lens and in the visible may be as high as 10,000 A per photon. The beam propagation was computer modelled and interference experiments were performed between the elliptical beams and plane waves to enable the phase structure of the elliptical beams to be viewed directly.

Original languageEnglish
Pages141-142
Number of pages2
Publication statusPublished - 1997 Jan 1
EventProceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS - Baltimore, MD, USA
Duration: 1997 May 181997 May 23

Conference

ConferenceProceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS
CityBaltimore, MD, USA
Period97/5/1897/5/23

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Courtial, J., Dholakia, K., Allen, L., & Padgett, M. J. (1997). Light beams with very high orbital angular momentum. 141-142. Paper presented at Proceedings of the 1997 Conference on Quantum Electronics and Laser Science, QELS, Baltimore, MD, USA, .