الفهرس 
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Abstract
Dispersive Michelson Interferometer (DMI) has the common configuration of Michelson Interferometer (MI) invented by Albert Abraham Michelson in 1881, where a transparent dispersive medium is added to the optical path of MI. Different types of fringes can be observed with different light sources ( monochromatic, quasi-monochromatic and white light source) are applicable.
This interferometer can be used for measuring refraction and dispersion of different variety of samples and it has many applications in the fields of metrology, spectroscopy, internal and external topography.
In this work a modification of the original interferometer is introduced. The two mirrors are movable and a holder for samples is added. Refraction and dispersion of solid glass samples (BAK1, BK7, N-LAF35, SK4 and Carl Zeiss) of thicknesses (12.101, 12.473, 9.930, 6.602 and 12.250 mm) are measured.
The first chapter gives an introduction to MI and its applications. Also, it contains the literature review on the methods used for measuring refraction and dispersion. The aim of the thesis is included.
The second chapter is devoted to the theory of the interferometer. the interference equations are deduced through the analysis of optical path lengths in DMI. Three different arrangements of DMI are considered; the sample is introduced in one of the arms of a MI illuminated by white light source, the sample is introduced as a beam splitter in MI illuminated by a monochromatic source and the sample is introduced as a beam splitter in MI illuminated by a white light source.
In chapter three the experimental arrangements are described. A stable interferometer is built and used to produce and observe Rings of equal chromatic order, elliptical fringes, straight line fringes and hyperbolas fringes. The interferograms are recorded using a CCD camera. The spectral lines of Hg-Lamp and the Edser-Butler fringes are recorded simultaneously with the fringes produced by DMI and are used for wavelength calibration of white light interferogram.
In chapter four the experimental results are reported and discussed. 1) The sample is introduced in one of the arms of a MI illuminated by white light source. The refraction and dispersion of glass samples (BAK1, BK7, N-LAF35 and SK4) of thicknesses (12.101, 12.473, 9.930 and 6.602 mm) are measured. 2) The sample is introduced as a beam splitter in a MI illuminated by a monochromatic source. The refraction of Carl zeiss glass sample of thickness 12.250 mm is measured. 3) The sample is introduced as a beam splitter in a MI illuminated by a white light source. The refraction and dispersion of glass samples (BAK1, BK7, N-LAF35, SK4 and Carl-Zeiss) of thicknesses (12.101, 12.473, 9.930, 6.602 and 12.250 mm) are measured.
The DMI discussed in this thesis has many advantages:1) the measurement is done using a single interferogram ( real time imaging of refraction and dispersion. 2) Samples with low flatness and parallelism are measured. 3) High accuracy of measurements are obtained. The refractive index and its variation with wavelength are determined over a wide range of spectrum with relative errors of 10-3 and 1.6× 10-4, respectively. These measurements are in good agreement with reference data.