Determination of the third- and fifth-order optical nonlinearities: the general case

作者：Besse V^*; Boudebs G; Leblond H

来源：Applied Physics B: Lasers and Optics , 2014, 116(4): 911-917.

DOI：10.1007/s00340-014-5777-2

We compute the evolution of the intensity (I) and the phase (phi) of a beam propagating in a nonlinear (NL) isotropic medium exhibiting third- and fifth-order NL optical characteristics. All formulas are analytic, but the general case requires a numerical inversion by means of Newton%26apos;s method. The solutions may differ if some coefficients vanish, so they are given in all cases up to the fifth-order nonlinearities. The analytical relations allow us to fit the experimental data using the recently introduced D4 sigma-Z-scan method. Carbon disulfide is tested at 532 and 1,064 nm in the picosecond regime deducing NL coefficients related to third- and fifth-order optical susceptibilities.

• 出版日期2014-9