Superresolution using a vertical-cavity surface-emitting laser (VCSEL) with a high-order laguerre-gaussian mode

Richard A. Flynn, Osman Kibar, Daniel Hartmann, Sadik Esener

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

A vertical-cavity surface-emitting laser (VCSEL) is current-annealed to operate in the high order (0,4) Laguerre mode, and this source is used in a superresolution setup to achieve a spot size smaller than the classical diffraction limit. Theory predicts a reduction down to 51% of the classical limit in each dimension (i.e. 4 × reduction in area), and a reduction down to 65% (i.e. 2.5 × reduction in area) is experimentally demonstrated with a signal-to-noise ratio of > 10 dB between the main-lobe and the side-lobe intensities.

Original languageEnglish (US)
Pages (from-to)902-905
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume39
Issue number2 B
StatePublished - Dec 1 2000
Externally publishedYes

Keywords

  • Data storage
  • Laguerre-gaussian
  • Spot size
  • Superresolution
  • Vcsel

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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