Interference-free superposition of nonzero order light modes: Functionalized optical landscapes

Tomas Cizmar, Heather Isla Campbell Dalgarno, Praveen Cheriyan Ashok, Frank J Gunn-Moore, Kishan Dholakia

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


In this paper, we utilize the incoherent superposition of nonzero order light modes. We show that this approach brings an additional degree of freedom to the generation of optical fields and notably the formation of superpositions that are otherwise unattainable through the use of refractive or diffractive optical elements and coherent or incoherent light sources. We employ this technique in two exemplary cases: first to create a field with tunable orbital angular momentum whose spatial intensity distribution remains unchanged and second to form an unusual type of "nondiffracting" light beam.

Original languageEnglish
Article number081114
Number of pages3
JournalApplied Physics Letters
Issue number8
Publication statusPublished - Feb 2011


  • Rotating flows
  • Optical tweezers
  • Photonics
  • Angular momentum
  • Coherence


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