title: Higher-order harmonics of limited diffraction Bessel beams
abstract: We investigate theoretically the nonlinear propagation of the limited diffraction Bessel beam in nonlinear media, under the successive approximation of the KZK equation. The result shows that the nth-order harmonic of the Bessel beam, like its fundamental component, is radially limited diffracting, and that the main beamwidth of the nth-order harmonic is exactly 1/n times that of the fundamental.
authors.affiliation: Department of Electronic Engineering, Southeast University, Nanjing, People's Republic of China.
authors.initials: D
authors.lastname: Ding
authors.initials: J
authors.lastname: Lu