Results in Physics (Jan 2016)

Beam width evolution of astigmatic hollow Gaussian beams in highly nonlocal nonlinear media

  • Zhen-Feng Yang,
  • Xue-Song Jiang,
  • Zhen-Jun Yang,
  • Jian-Xing Li,
  • Shu-Min Zhang

Journal volume & issue
Vol. 6
pp. 163 – 164

Abstract

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We investigate the beam width evolution of astigmatic hollow Gaussian beams propagating in highly nonlocal nonlinear media. The input-power-induced different evolutions of the beam width are illustrated: (i) the beam widths in two transverse directions are compressed or broadened at the same time; (ii) the beam width in one transverse direction keeps invariant, and the other is compressed or broadened; (iii) furthermore, the beam width in one transverse direction is compressed, whereas it in the other transverse direction is broadened. Keywords: Optical beam, Nonlinear propagation, Beam width