Theoretical study of high order and saturable Kerr media nonlinearities in Z-scan

Santos, J.F.M. dos; Costa, Gláucia Grüninger Gomes; Messias, Djalmir N.; Catunda, T.

doi:10.1016/j.optcom.2020.126421

Cited by 7 publications

(1 citation statement)

References 32 publications

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“…However, all these techniques suffer from limitations either in the applicability, the simplicity of implementation or the precision. For instance, the most commonly used method is the so called "z-scan" technique [19,23,24,25,26]. This technique consists in the measurement of the normalized transmission through a pinhole aperture placed in the far-field of the sample as a function of its position with respect to the waist of a focused Gaussian beam.…”

Section: Introductionmentioning

confidence: 99%

Transit effects for non-linear index measurement in hot atomic vapors

Aladjidi¹,

Abuzarli²,

Brochier³

et al. 2022

Preprint

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Hot atomic vapors are widely used in non-linear and quantum optics due to their large Kerr non-linearity. While the linear refractive index and the transmission are precisely measured and well modeled theoretically, similar characterization remains partial for the χ (3) non-linear part of the susceptibility. In this work, we present a set of tools to measure and estimate numerically the non-linear index of hot atomic vapors both in the steady state and during the transient response of the medium. We apply these techniques for the characterization of a hot vapor of rubidium and we evidence the critical role played by transit effects, due to finite beam sizes, in the measurement of the non-linear index.

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