Diffraction on square aperture

Diffraction on square aperture

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Credit: GIPhotoStock/SCIENCE PHOTO LIBRARY

Caption: A small square aperture (130x130 micron) is placed in a beam produced by a red Helium-Neon laser operating at 632.8 nm. The resulting Fraunhofer diffraction patterns are observed at about 23 cm away. The central diffraction lobe is oversaturated so that the outer fringes are more prominent.

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Keywords: aperture, beam, diffract, diffraction, fraunhofer, fringe, he, helium, interference, laser, laser beam, light, monochromatic, ne, neon, optical, optics, pattern, physics, red, square, square aperture

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