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Opt Express. 2013 Jan 28;21(2):1615-22. doi: 10.1364/OE.21.001615.

Generation of linear and nonlinear propagation of three-Airy beams.

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The MOE Key Laboratory of Weak-Light Nonlinear Photonics, and TEDA Applied Physics School and School of Physics, Nankai University, Tianjin 300457, China.


We report the first experimental demonstration of the so-called three-Airy beams. Such beams represent a two-dimensional field that is a product (rather than simple superposition) of three Airy beams. Our experiments show that, in contrast to conventional Airy beams, this new family of Airy beams can be realized even without the use of truncation by finite apertures. Furthermore, we study linear and nonlinear propagation of the three-Airy beams in a photorefractive medium. It is found that a three-Airy beam tends to linearly diffract into a super-Gaussian-like beam, while under nonlinear propagation it either turns into three intensity spots with a self-defocusing nonlinearity or evolves into a self-trapped channel with a self-focusing nonlinearity.

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