Physics – Popular Physics
Scientific paper
2007-09-18
Physics
Popular Physics
submitted to PRL
Scientific paper
A method is presented for generation of a subwavelength (0.43 lambda)
longitudinally polarized beam, which propagates without divergence over lengths
of about 4 lambda in free space. This is achieved by controlling the amplitude,
phase and polarization property of the Bessel-Gaussian field on the aperture of
a high numerical aperture focusing lens.
Chong Chi Tat
Luk`yanchuk B. S.
Sheppard C. J. R.
Shi L. P.
Wang Haifeng
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