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RESEARCH PRODUCT
Effective Fresnel-number concept for evaluating the relative focal shift in focused beams
Pedro AndrésManuel Martínez-corralEnrique SilvestreCarlos J. Zapata-rodríguezsubject
DiffractionWavefrontPhysicsFresnel zoneGeometrical opticsbusiness.industryAstrophysics::Instrumentation and Methods for AstrophysicsScalar (physics)Atomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsOpticsFresnel numberComputer Vision and Pattern RecognitionFocus (optics)businessFresnel diffractiondescription
We report on an analytical formulation, based on the concept of effective Fresnel number, to evaluate in a simple way the relative focal shift of rotationally nonsymmetric scalar fields that have geometrical focus and moderate Fresnel number. To illustrate our approach, certain previously known results and also some new focusing setups are analytically examined.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-02-01 | Journal of the Optical Society of America A |