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Proceedings Paper

Experimental investigation of the fringe pattern of capillary tube filled with liquid by using focused laser sheet of light
Author(s): Ailing Yang; Wendong Li; Junyu Dong; Guimei Sun; Decang Bi; Guang Yuan; Jinliang Zhang
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Paper Abstract

A focused laser light sheet was used to illuminate the capillary tube filled with liquid and fringe patterns can be seen. The fringe patterns can be formed by rays directly passing through the capillary tube or reflected one time or two times by the walls of the capillary tube then transmitted again. The fringe patterns formed by transmission light lie before the capillary tube and can be bell-shaped, steep bell-shaped, or almost parallel, which strongly depend on the position of the capillary tube. The bell shaped pattern can be qualitatively explained by the addition of diffraction of multi-slits and is relative to the aberration of the cylindrical lens. This pattern is also relative to the refractive index of liquid containing in the capillary tube. The fringe patterns caused by reflected light lie before or after the capillary tube, which will influence the contrast of the bell shaped fringe pattern formed by transmitted light.

Paper Details

Date Published: 29 January 2007
PDF: 7 pages
Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 627978 (29 January 2007); doi: 10.1117/12.725931
Show Author Affiliations
Ailing Yang, Ocean Univ. of China (China)
Wendong Li, Ocean Univ. of China (China)
Junyu Dong, Ocean Univ. of China (China)
Guimei Sun, Ocean Univ. of China (China)
Decang Bi, Ocean Univ. of China (China)
Guang Yuan, Ocean Univ. of China (China)
Jinliang Zhang, Ocean Univ. of China (China)


Published in SPIE Proceedings Vol. 6279:
27th International Congress on High-Speed Photography and Photonics

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