Focusing astigmatic Gaussian beams through optical systems with a high numerical aperture
Optics Letters, Vol. 30, Issue 19, pp. 2527-2529 (2005)
http://dx.doi.org/10.1364/OL.30.002527
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Abstract
We theoretically derive the electric field distribution of an astigmatic Gaussian laser beam after it is focused through a high-aperture objective. We show that astigmatism values that are hard to detect in the collimated laser beam can have a large effect after diffraction-limited focusing. Such astigmatic beams may be frequently encountered in fluorescence correlation measurements and in laser-scanning confocal microscopy. We present experimental measurements of the excitation intensity distribution measured by 3D scanning of single fluorescent molecules immobilized on a glass surface.
© 2005 Optical Society of America
OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(180.1790) Microscopy : Confocal microscopy
ToC Category:
Diffraction and Gratings
Citation
Ingo Gregor and Jörg Enderlein, "Focusing astigmatic Gaussian beams through optical systems with a high numerical aperture," Opt. Lett. 30, 2527-2529 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-19-2527
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