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Applied Optics

Applied Optics


  • Vol. 22, Iss. 22 — Nov. 15, 1983
  • pp: 3500–3502

Hook method: improvement and simplification of the experimental setup

P. van de Weijer and R. M. M. Cremers  »View Author Affiliations

Applied Optics, Vol. 22, Issue 22, pp. 3500-3502 (1983)

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The conventional experimental setup used to measure anomalous dispersion by the hook method has been modified by replacing the spectrograph by a single grating in combination with a camera. The grating is used for diffraction angles close to π/2 rad, and the focal distance for projection of the hook spectrum is 4 m. The high dispersion thus obtained (typically 200 mm/nm) considerably facilitates the use of the hook method for diagnostic purposes. Further, it is demonstrated that, for such large diffraction angles, a focusing element after diffraction at the grating can be avoided without losing too much sharpness in the hook spectrum.

© 1983 Optical Society of America

Original Manuscript: April 19, 1983
Published: November 15, 1983

P. van de Weijer and R. M. M. Cremers, "Hook method: improvement and simplification of the experimental setup," Appl. Opt. 22, 3500-3502 (1983)

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