Superresolution Using a Vertical-Cavity Surface-Emitting Laser (VCSEL) with a High-Order Laguerre-Gaussian Mode

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 lim...

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Bibliographic Details
Published in:JPN J APPL PHYS PART 1 REGUL PAP SHORT NOTE REV PAP 2000, Vol.39 (2S), p.902-905
Main Authors: Flynn, Richard A., Kibar, Osman, Hartmann, Daniel, Esener, Sadik
Format: Article
Language:English
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Summary: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.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.39.902