1 Ocak 2021 Dergi makalesi Açık Erişim

Koksal, K.; Babiker, M.; Lembessis, V. E.; Yuan, J.

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    <subfield code="a">Chirality and helicity of linearly-polarised Laguerre-Gaussian beams of small beam waists</subfield>
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    <subfield code="a">The chirality and helicity of a linearly polarised Laguerre-Gaussian (LG) beam are examined. Such a type of light possesses a large longitudinal field amplitude when it is created with a sufficiently small beam waist and so gives rise to substantial magnitudes of chirality and helicity density distributions. In the simplest case of a doughnut beam of winding number l = 1 and another identical to it but for which l = -1, we obtain different chirality and helicity distributions in the focal plane z = 0. We also show that this chiral behaviour persists and the patterns evolve so that on planes at z &amp;lt; 0 and z &amp;gt; 0 the beam convergence phase contributes differently to the changes in the chirality and helicity distributions.</subfield>
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    <subfield code="a">Babiker, M.</subfield>
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    <subfield code="a">Lembessis, V. E.</subfield>
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    <subfield code="a">10.1016/j.optcom.2021.126907</subfield>
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