Fourth-order interference technique for determining the coherence time of a light beam

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Detail(s)

Original languageEnglish
Pages (from-to)100-103
Journal / PublicationJournal of the Optical Society of America B: Optical Physics
Volume6
Issue number1
Publication statusPublished - Jan 1989
Externally publishedYes

Abstract

A new experimental procedure for determining the (second-order) coherence time of a light beam is described that is based on a combination of conventional interferometry with an intensity-correlation technique. It permits measurements of coherence times that are several orders of magnitude shorter than the resolving times of the detectors, which ordinarily limit correlation measurements. The validity of the method is demonstrated by an experiment in which the transverse fluorescent light from a dye laser is measured. © 1989, Optical Society of America.

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