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Applied Optics

Applied Optics


  • Vol. 38, Iss. 25 — Sep. 1, 1999
  • pp: 5355–5364

Interferometric chromatic dispersion measurements of long, gradient-index rod lenses in the visible and the near infrared

Todd H. Tomkinson and Duncan T. Moore  »View Author Affiliations

Applied Optics, Vol. 38, Issue 25, pp. 5355-5364 (1999)

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A new procedure is presented for testing long, radial-gradient-index rod lenses in a phase-stepping Twyman–Green interferometer. In addition, a method for converting the measured optical phase data to the rod’s index of refraction profile is reviewed. This procedure was used to measure refractive-index profile dispersions over the wavelength range of 441 to 1064 nm. These measurements provide the first data for refractive-index profiles of rod lenses in the infrared and show the existence of positive dispersion, negative dispersion, and near-infrared dispersion reversal in some samples. The dispersion results suggest the need for modifications to the current glass model.

© 1999 Optical Society of America

OCIS Codes
(110.2760) Imaging systems : Gradient-index lenses
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.3940) Instrumentation, measurement, and metrology : Metrology
(160.2750) Materials : Glass and other amorphous materials
(260.2030) Physical optics : Dispersion

Original Manuscript: March 17, 1999
Revised Manuscript: May 26, 1999
Published: September 1, 1999

Todd H. Tomkinson and Duncan T. Moore, "Interferometric chromatic dispersion measurements of long, gradient-index rod lenses in the visible and the near infrared," Appl. Opt. 38, 5355-5364 (1999)

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