WIAS Preprint No. 1388, (2008)

Method for computing the nonlinear refractive index via Keldysh theory


  • Brée, Carsten
  • Demircan, Ayhan
  • Steinmeyer, Günter

2010 Mathematics Subject Classification

  • 78A10 78A60


  • Nonlinear Optics, Laser-matter interaction




By making use of the multiphoton limit of Keldysh theory, we show that for the case of two-photon absorption a Kramers-Kronig expansion can be used to calculate the nonlinear refractive index for different wavelenghts. We apply this method to various inert gases and compare the obtained numerical values to different experimental and theoretical results for the dispersion of the Kerr nonlinearity.

Appeared in

  • IEEE J. Quantum Electron., 46 (2010) pp. 433--437.

Download Documents