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
267684.table.003a
267684.table.003b
FWHM = 0.37λ
267684.table.003c

, 267684.table.003d267684.table.003e
FWHM = 0.298λ
267684.table.003f

, 267684.table.003g267684.table.003h
FWHM = 0.264λ
267684.table.003i

,
, 267684.table.003j
267684.table.003k
FWHM = 0.31λ
267684.table.003l

,
, 267684.table.003m
267684.table.003n
FWHM = 0.284λ
267684.table.003o

267684.table.003p267684.table.003q
FWHM = 0.22λ
267684.table.003r