We study numerically the mutual propagation of two fractional topological charge Laguerre–Gaussian (LG) light beams in the moving atmosphere with the thermal nonlinearity. The fractional charge beam is constructed as a weighted superposition of a finite number of the standard LG modes with integer charges. Numerical simulations demonstrate an enhanced stability of the cross-section intensity distribution of the fractional charge LG beams against the thermal blooming, as compared with the case of integer charge beams. The dominant mechanism of such a stability results from the multimodal structure of the fractional charge beams.
© 2010 Optical Society of America
Atmospheric and Oceanic Optics
Original Manuscript: October 16, 2009
Revised Manuscript: January 5, 2010
Manuscript Accepted: January 26, 2010
Published: February 24, 2010
Maxim A. Molchan, Evgeny V. Doktorov, and Rafael A. Vlasov, "Propagation of vector fractional charge Laguerre–Gaussian light beams in the thermally nonlinear moving atmosphere," Opt. Lett. 35, 670-672 (2010)