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- Title
Study of Generating Sub-Diffraction-Limit Patterns with the Phase Modulation of Polarized Beams.
- Authors
Chen Zhang; Hongfu Li; Shuang Wang; Wei Zhao; Xiaoqiang Feng; Kaige Wang; Guiren Wang; Jintao Bai
- Abstract
In this work, laser spatial patterns with sub-diffraction-limit structures are acquired systematically by wavefront modulation of different polarized Gaussian beams based on the vectorial diffraction theory. The Gaussian beams, which are in circular, radial and azimuthal polarization, are applied with special designed phase plates. With the modification of the phase factor in diffraction integral formula, new kinds of phase plates are carried out and employed with the polarized beams. The mechanism of forming sub-diffractionlimit patterns has been illustrated detailedly, as well as the topography of the vast novel beam patterns with special dimensional distribution near the focal plane. The special wavefront designing of Guassian light beam provides many useful beam patterns which have great potential in the areas of far-field nanoscope, optical tweezer and beam fabrication.
- Subjects
DIFFRACTION gratings; PHASE modulation; POLARIZED beams (Nuclear physics); POLARIZATION (Nuclear physics); AZIMUTHAL equidistant projection (Cartography); GAUSSIAN beams
- Publication
Journal of Laser Micro / Nanoengineering, 2016, Vol 11, Issue 3, p290
- ISSN
1880-0688
- Publication type
Article
- DOI
10.2961/jlmn.2016.03.0002