Analysis of waves near focus: Method and experimental test

Bosch, Salvador; Ferre´-Borrull, Josep
March 2002
Applied Physics Letters;3/11/2002, Vol. 80 Issue 10, p1686
Academic Journal
We present an approach to the analysis of scalar wave focusing. A detailed study is made of an optical system where the basic idea is to define the geometry of the semiperiodic zones within the exit pupil, followed by a numerical integration on these zones. This approach clearly illustrates the nature of the phenomena involved and allows exact computations in focal regions. A practical illustration is presented by considering a meniscus lens system. The method may be readily adapted to a wide range of applications in confocal microscopy, or be used in the analysis of an optical instrument’s resolving power. © 2002 American Institute of Physics.


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