Simulation of Flat-Top Focus Shaping Using Effect of Polarization in High Numerical Apertures Optical Systems

Ke Feng; Jin Song Li; Ling Guo

doi:10.4028/www.scientific.net/AMR.571.175

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 571Simulation of Flat-Top Focus Shaping Using Effect...

Simulation of Flat-Top Focus Shaping Using Effect of Polarization in High Numerical Apertures Optical Systems

Abstract:

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.

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Periodical:

Advanced Materials Research (Volume 571)

Pages:

175-179

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.571.175

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Online since:

September 2012

Authors:

Ke Feng, Jin Song Li, Ling Guo

Keywords:

Flat-Top Focus, Generalized Cylindrical Vector Beam, Vector Diffraction Theory

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