Airy beam self-focusing in a photorefractive medium

作者：Wiersma Noemi; Marsal Nicolas; Sciamanna Marc; Wolfer**erger Delphine

来源：Scientific Reports, 2016, 6(1): 35078.

DOI：10.1038/srep35078

<jats:title>Abstract</jats:title><jats:p>The unique bending and shape-preserving properties of optical Airy beams offer a large range of applications in for example beam routing, optical waveguiding, particle manipulation and plasmonics. In these applications and others, the Airy beam may experience nonlinear light-matter interactions which in turn modify the Airy beam properties and propagation. A well-known example is light self-focusing that leads to the formation of spatial soliton. Here, we unveil experimentally the self-focusing properties of a 1D-Airy beam in a photorefractive crystal under focusing conditions. The transient evolution involves both self-bending and acceleration of the initially launched Airy beam due to the onset of an off-shooting soliton and the resulting nonlocal refractive index perturbation. Both the transient and stationary self-focusing properties can be tuned by varying the bias electric field, the injected Airy beam power and the background illumination.</jats:p>

• 出版日期2016-10-12