Abstract
The Gouy phase, sometimes called the focal phase anomaly, is the curious effect that in the vicinity of its focus a diffracted field, compared to a non-diffracted, converging spherical wave of the same frequency, undergoes a rapid phase change by an amount of π . We theoretically investigate the phase behavior and the polarization ellipse of a strongly focused, radially polarized beam. We find that the significant variation of the state of polarization in the focal region, is a manifestation of the different Gouy phases that the two electric field components undergo. © 2013 Optical Society of America.
Original language | English |
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Pages (from-to) | 8331-8341 |
Journal | Optics Express |
Volume | 21 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2013 |