Using a laser source to measure the refractive index of glass beads and Debye theory analysis

Applied Optics
Shui-Yan LiQiong-Hua Wang

Abstract

Using a monochromatic laser beam to illuminate a homogeneous glass bead, some rainbows will appear around it. This paper concentrates on the study of the scattering intensity distribution and the method of measuring the refractive index for glass beads based on the Debye theory. It is found that the first rainbow due to the scattering superposition of backward light of the low-refractive-index glass beads can be explained approximately with the diffraction, the external reflection plus the one internal reflection, while the second rainbow of high-refractive-index glass beads is due to the contribution from the diffraction, the external reflection, the direct transmission, and the two internal reflections. The scattering intensity distribution is affected by the refractive index, the radius of the glass bead, and the incident beam width. The effects of the refractive index and the glass bead size on the first and second minimum deviation angle position are analyzed in this paper. The results of the measurements agree very well with the specifications.

References

Mar 10, 2006·Applied Optics·Renxian LiKuan Fang Ren
Jul 5, 2007·Applied Optics·Renxian LiHuifen Jiang
Feb 13, 2008·Applied Optics·R L Lee
Feb 21, 2008·Applied Optics·H HattoriK Kagawa
Apr 3, 2010·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Feng XuCameron Tropea
Jan 1, 1991·Applied Optics·R T Wang, H C van de Hulst
Jun 29, 2012·Optics Letters·Antonio Alvaro Ranha Neves, Dario Pisignano

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Citations

Mar 11, 2021·Applied Optics·Wenze ZhuangYongjie Jia

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