A dual beam photonic crystal fiber trap for microscopic particles

David M. Gherardi, Antonia E. Carruthers, Tomáš Čižmár, Ewan M. Wright, Kishan Dholakia

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The dual beam counterpropagating optical trap has found increased use in studies such as optical stretching, optical binding, Raman spectroscopy, and the trapping of high index particles. In this letter we demonstrate the use of photonic crystal fiber to realize a long range dual beam trap that may support multiple wavelengths simultaneously. We develop a dual wavelength conveyor belt for trapped particles and realize the first ever dual beam white light (supercontinuum) trap. This low coherence light trap permits long range longitudinal optical binding of microparticles in the trap with no deleterious interference effects.

Original languageEnglish
Article number041110
JournalApplied Physics Letters
Issue number4
Publication statusPublished - 2008

Bibliographical note

Funding Information:
D.M.G., A.E.C. and T.C. contributed equally to the work presented. We thank R. Marchington, K. Metzger, and K. M. Tan for useful discussions and advice, D. M. McGloin for the loan of a NIR laser, and the UK Engineering and Physical Sciences Research Council for funding. E.M.W. is funded in part by the Joint Services Optical Program (JSOP).

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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