Talbot interferometry in noncollimated illumination for curvature and focal length measurements

We describe a simple method for measuring the radius of curvature by using Talbot interferometry in a noncollimated light beam. This scheme can also be used to determine the focal length of the collimating lens employed in the setup. Results of the measurements are presented. A discussion of achieva...

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Veröffentlicht in:	Applied Optics 1992, Vol.31 (1), p.75-79
Hauptverfasser:	Sriram, K V, Kothiyal, M P, Sirohi, R S
Format:	Artikel
Sprache:	eng
Schlagworte:	Exact sciences and technology Fundamental areas of phenomenology (including applications) Optical workshop techniques Optics Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	We describe a simple method for measuring the radius of curvature by using Talbot interferometry in a noncollimated light beam. This scheme can also be used to determine the focal length of the collimating lens employed in the setup. Results of the measurements are presented. A discussion of achievable accuracies and the proper choice of parameters is included.
ISSN:	0003-6935 1559-128X 1539-4522
DOI:	10.1364/AO.31.000075