29 January 2007 Experimental investigation of the fringe pattern of capillary tube filled with liquid by using focused laser sheet of light
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Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 627978 (2007) https://doi.org/10.1117/12.725931
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China
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.
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Ailing Yang, Ailing Yang, Wendong Li, Wendong Li, Junyu Dong, Junyu Dong, Guimei Sun, Guimei Sun, Decang Bi, Decang Bi, Guang Yuan, Guang Yuan, Jinliang Zhang, Jinliang Zhang, } "Experimental investigation of the fringe pattern of capillary tube filled with liquid by using focused laser sheet of light", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 627978 (29 January 2007); doi: 10.1117/12.725931; https://doi.org/10.1117/12.725931
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