Chirality and helicity of linearly-polarised Laguerre-Gaussian beams of small beam waists

The chirality and helicity of a linearly polarised Laguerre-Gaussian (LG) beam are examined. Such type light possesses large longitudinal field amplitude when it is created with sufficiently small waist so gives rise to substantial magnitudes density distributions. In the simplest case doughnut winding number ?=1 another identical but for which ?=?1, we obtain different distributions in focal plane z=0. We also show that this chiral behaviour persists patterns evolve on planes at z<0 z>0 convergence phase contributes differently changes