کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
734031 893386 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of refractive indices of liquids by Fresnel diffraction
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Determination of refractive indices of liquids by Fresnel diffraction
چکیده انگلیسی

We demonstrate an easy, reliable, applicable, and sensitive method to measure refractive index of liquids by using Fresnel diffraction. In this method a cylindrical glass rod, in general, or an optical fiber in special case, is immersed into a liquid. Physical parameters of the rod, like radius and refractive index, should be well known. Then, the normalized intensity distribution on the Fresnel diffraction pattern of a plane wave diffracted from the immersed fiber is measured. Thereafter, refractive index of the liquid is evolved by the least-square method. This method applied to determine the refractive index of four liquids; pure water, 2-propanol (isopropanol), acetone and methanol. Index of refraction of each one has been acquired for four visible wavelengths. A theoretical approach and experimental results is presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 41, Issue 7, October 2009, Pages 892–896
نویسندگان
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