Focusing and self-healing characteristics of Airy array beams propagating in self-focusing media
- 31 Downloads
The focusing and self-healing characteristics of Airy array beams propagating in self-focusing media are studied numerically. When the Kerr effect is strong enough, an Airy array beam may focus twice for the coherent combination, while an Airy array beam may not focus for the incoherent combination. These behaviors are quite different from those without Kerr effect. With and without Kerr effect, the self-healing of Airy array beams with main lobes blocked can be achieved. Furthermore, a better reconstruction for the incoherent combination case can be achieved than that for the coherent combination case. The propagation distance required for the reconstruction of Airy array beams with main lobes blocked decreases due to the Kerr effect. The reconstruction of an Airy array beam with main lobes blocked may complete before or after focusing, which depends on the intensity distribution and the coherence of the array beam and is independent of the Kerr effect.
This work was supported by the National Natural Science Foundation of China (NSFC) under Grant no. 61775152.
- 22.G.P. Agrawal, Nonlinear fiber optics, Chap 2, vol. II (Academic Press, Cambridge, 1995)Google Scholar