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Advances in Optical Technologies
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Advances in Optical Technologies
/
2013
/
Article
/
Tab 3
/
Research Article
Minimizing the Bright/Shadow Focal Spot Size with Controlled Side-Lobe Increase in High-Numerical-Aperture Focusing Systems
Table 3
Results of numerical simulation for the azimuthally polarized beam without vortex components (
).
Transmission function (amplitude and phase)
Transverse intensity in the focus,
Transverse intensity profile
= const
FWHM = 0.37
λ
,
FWHM = 0.298
λ
,
FWHM = 0.264
λ
,
,
FWHM = 0.31
λ
,
,
FWHM = 0.284
λ
FWHM = 0.22
λ