User:Tohline/Appendix/CGH/Overview
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CGH: Philosophical Overview
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Slit Diffraction
Single Aperture

As has been detailed in an accompanying discussion, we consider, first, the amplitude (and phase) of light that is incident at a location on an image screen that is located a distance from a slit of width . The amplitude is given by the expression,



where,



and,



Notice that, in the definition of , the expression inside the square brackets involves a term that depends quadratically on the dimensionless length scale, , as well as a term that depends linearly on this ratio. As discussed below, our expression for the amplitude simplifies nicely in situations where the quadratic term can be ignored. Via a related simplification, we will find that the various natural lengths of this problem are can be related via the expression,



See Also
 Tohline, J. E., (2008) Computing in Science & Engineering, vol. 10, no. 4, pp. 8485 — Where is My Digital Holographic Display? [ PDF ]
 Diffraction (Wikipedia)
 Various Google hits:
 Single Slit Diffraction (University of Tennessee, Knoxville)
 Diffraction from a Single Slit; Young's Experiment with Finite Slits (University of New South Wales, Sydney, Australia)
 Single Slit Diffraction Pattern of Light (University of British Columbia, Canada)
 Fraunhofer Single Slit (Georgia State University)
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