We find conditions for collimation and guiding of two light beams in a nonlinear bulk medium. The spatial parameters of each beam of the symbiotically coupled pair depend critically on the cross-phase modulation from the complementary beam. The diffraction divergence and self-phase modulation can be offset by proper choice of the wavelength, the value, and the sign of the nonlinear susceptibility of the medium.
© 1992 Optical Society of America
S. G. Dinev, A. A. Dreischuh, D. Kavaldjiev, and K. D. Krastev, "Collimation and guiding of symbiotic light-beam pairs," J. Opt. Soc. Am. B 9, 387-390 (1992)