Grating Intensity ComparisonThe grating intensity expression gives a peak intensity which is proportional to the square of the number of slits illuminated. Increasing the number of slits not only makes the diffraction maximum sharper, but also much more intense. If a mm diameter laser beam strikes a line/mm grating, then it covers slits and the resulting line intensity is x that of a double slit. |
Index Diffraction concepts Fraunhofer diffraction | ||
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Grating Intensity
This gives a total intensity expression: |
Index Diffraction concepts Grating concepts | |||
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