Papers › Transit effects for non-linear index measurement in hot atomic vapors
Transit effects for non-linear index measurement in hot atomic vapors
Tangui Aladjidi, Murad Abuzarli, Guillaume Brochier, Tom Bienaimé, Thomas Picot, Alberto Bramati, Quentin Glorieux
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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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