Vector Diffraction Theory Of Focusing In Systems Of High Numerical Aperture

The diffraction image formed by a perfect lens is well known as the "Airy Disc". Many engineers may not realize that this familiar concept requires modification when large numerical apertures and polarization are involved. The following technical note indicates some of the effects for an extreme F/0.52 imaging situation, as might be found in an optical data storage system. This article also discusses some of the techniques needed for computing diffraction effects in such extreme, but more frequently occurring, conditions.

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