Simulation of Flat-Top Focus Shaping Using Effect of Polarization in High Numerical Apertures Optical Systems
Keyword(s):
Flat-top focus shaping using effect of polarization is investigated theoretically by vector diffraction theory. We demonstrate how to make a properly selected polarization component to achieve a flat-top focus in high numerical apertures optical systems, hence achieving a potential goal of beam shaping. The results show that the values of the polarization angle corresponding to different numerical apertures (NA)values for a flat-top focus and the polarization angle increases on increasing NA for achieving a flat-top focal spot, but the flat-top focal pattern will become -sensitive when NA is larger than 1. One will have to add a diffractive optical element to achieve a flat-top focal spot in NA larger than 1 system.
Keyword(s):
2003 ◽
Vol 42
(Part 1, No. 2B)
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pp. 735-739
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Keyword(s):
Keyword(s):