Integrated compact optical vortex beam emitters

Xinlun Cai, Jianwei Wang, Michael J Strain, Benjamin Johnson-Morris, Jiangbo Zhu, Marc Sorel, Jeremy L O'Brien, Mark G Thompson, Siyuan Yu

Research output: Contribution to journalArticle

534 Citations (Scopus)

Abstract

Emerging applications based on optical beams carrying orbital angular momentum (OAM) will probably require photonic integrated devices and circuits for miniaturization, improved performance, and enhanced functionality. We demonstrate silicon-integrated optical vortex emitters, using angular gratings to extract light confined in whispering gallery modes with high OAM into free-space beams with well-controlled amounts of OAM. The smallest device has a radius of 3.9 micrometers. Experimental characterization confirms the theoretical prediction that the emitted beams carry exactly defined and adjustable OAM. Fabrication of integrated arrays and demonstration of simultaneous emission of multiple identical optical vortices provide the potential for large-scale integration of optical vortex emitters on complementary metal-oxide–semiconductor compatible silicon chips for wide-ranging applications.
Original languageEnglish
Pages (from-to)363-366
Number of pages34
JournalScience
Volume338
Issue number6105
DOIs
Publication statusPublished - 19 Oct 2012

Keywords

  • photonics
  • optics
  • optical vortex beam emitters

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    Cai, X., Wang, J., Strain, M. J., Johnson-Morris, B., Zhu, J., Sorel, M., ... Yu, S. (2012). Integrated compact optical vortex beam emitters. Science, 338(6105), 363-366. https://doi.org/10.1126/science.1226528