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![]() ![]() %Theory (See also Mar_23.m) % The FT of the 'rect' function is the 'sinc' function. The Finite-Width Single Slit lambda=.633 %Wavelength of laser (micron) =meshgrid((-MeshSize/2:MeshSpacing:MeshSize/2),(-MeshSize/2:MeshSpacing:MeshSize/2)) Ī=RSZ/2)=FGridX_Shift(FGridX_Shift>SZ/2)-SZ įGridY_Shift(FGridY_Shift>SZ/2)=FGridY_Shift(FGridY_Shift>SZ/2)-SZ MeshSize=200 %Size of Screen (micron) %Calculate and show the Amplitude across the aperture. MeshSpacing=1 %Sampling across aperture (micron) Z=Z_Meters*10^6 %Screen distance in microns Lambda=.633 %Wavelength of laser (micron) Let's revisit diffraction from a circular aperture. lambda=10 %Try adjusting and look at the result.įigure imshow(abs(F_Wave),) title( '2D FFT of Wave')įigure imshow(abs(F_Wave_Shift),) title( '2D FFT of Wave, DC at Center.') Let's try a simple example to demonstrate the 2D FT. The two dimensional fourier transform is computed using 'fft2'. The complex amplitude at each position can be seen as the 2D Fourier coefficient calculated for the frequency. The complex amplitude of a diffracted wave far from an aperture can be calculated using the Fraunhofer diffraction integral:Īre the coordinates across the aperture, is the complex amplitude across the aperture, and are the coordinates at the screen. Fraunhofer Diffraction and the 2D Fourier Transformįraunhofer Diffraction and the 2D Fourier Transform.Our product offerings include millions of PowerPoint templates, diagrams, animated 3D characters and more. is brought to you by CrystalGraphics, the award-winning developer and market-leading publisher of rich-media enhancement products for presentations. Then you can share it with your target audience as well as ’s millions of monthly visitors. We’ll convert it to an HTML5 slideshow that includes all the media types you’ve already added: audio, video, music, pictures, animations and transition effects. You might even have a presentation you’d like to share with others. And, best of all, it is completely free and easy to use. Whatever your area of interest, here you’ll be able to find and view presentations you’ll love and possibly download. It has millions of presentations already uploaded and available with 1,000s more being uploaded by its users every day. is a leading presentation sharing website. In general, the Jones vector for the arbitrary.and the Jones vector is simply a line inclined.If the phases are such that ? m? for m 0,.Jones vector Linearly polarized light at an The electric field oscillations are only along.The arrows indicate the sense of movement as the ![]() Jones vector Horizontally polarized light
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