Beam forming of light from structured metal nano-aperture vertical cavity lasers

Joshua D. Sulkin, Chen Chen, Placid Mathew Ferreira, Kent D Choquette

Research output: Contribution to journalConference articlepeer-review


We report the nano-scale patterning of concentric ring-shaped metal corrugations around a sub-wavelength aperture in Ag deposited on top of a vertical-cavity surface-emitting laser. The presence of the rings results in more than a doubling of collected far-field power and a reduction in far-field angular width from 100° to 28°. These nano-aperture lasers thus have the unique property of both a small near-field spot and a relatively low beam divergence. Finite-difference time-domain simulations confirm the experimental results and show that the far-field pattern is highly sensitive to misalignment of the aperture and to the presence of multiple transverse laser modes.

Original languageEnglish (US)
Article number72290H
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2009
EventVertical-Cavity Surface-Emitting Lasers XIII - San Jose, CA, United States
Duration: Jan 28 2009Jan 29 2009


  • Metal grating
  • Subwavelength aperture
  • Surface plasmon
  • Vertical-cavity surface-emitting laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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