Self-action of Bessel light beams in medium with large nonlinearity

• Published in: Optics communications Vol. 257; no. 1; pp. 139 - 145
• Main Authors: Pyragaite, V., Regelskis, K., Smilgevicius, V., Stabinis, A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 2006; Elsevier Science
• Subjects: Beam characteristics: profile, intensity, and power; spatial pattern formation; Beam trapping, self-focusing and defocusing; self-phase modulation; Beam trapping, self-focusing, and thermal blooming; Bessel beam; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Laser optical systems: design and operation; Nonlinear optics; Optics; Physics; Self-action; 42.60Jf; 42.65.−k; Self-action; Bessel beam; Nonlinear optics; Optical diffraction; Non linear material; Bragg diffraction; Third order; Theoretical study; Experimental device; Experimental study; 42.65.-k Bessel beam; Computer generated hologram; Light propagation; Angular scattering
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2005.07.012

The modifications of an angular spectrum of the intense Bessel
J
0 and
J
1 beams caused by self-action in the medium with large cubic nonlinearity are investigated. The appearance of an outer ring of triple radius was observed. The phenomenon can be explained as Bragg diffraction of Bessel beam on Bessel lattice in nonlinear medium. Experimental results are in qualitative agreement with the theoretical predictions.