Continuous motion of interference patterns using the angular Doppler-effect

L Paterson, M P Macdonald, K Volke-Sepulveda, J Arlt, Wilson Sibbett, Kishan Dholakia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We demonstrate the use of the angular Doppler effect to obtain continuous motion of interference patterns. A small frequency shift between two beams can create such a moving pattern. By rotating a half wave plate in one arm of an interferometer, frequency shifts in the optical domain from less than 1 Hertz to kHz are achieved. We apply moving interference patterns in an optical tweezers set-up to enable controlled and continuous motion of optically trapped particles and structures.

Original languageEnglish
Title of host publicationLaser processing of advanced materials and laser microtechnologies : International Conference on Lasers, Applications, and Technologies 2002 : 22-27 June 2002, Moscow, Russia
EditorsF H Dausinger, V I Konov, V Y Baranov, V Y Panchenko
PublisherSPIE
Pages98-102
ISBN (Print)0-8194-4981-4
Publication statusPublished - 2003

Publication series

NameSPIE proceedings series
Volume5121
ISSN (Print)0277-786X

Keywords

  • Doppler effect
  • interference
  • pattern
  • GAUSSIAN LASER MODES
  • OPTICAL TRAP
  • PARTICLES
  • MANIPULATION
  • ROTATION

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