论文标题
部分可观测时空混沌系统的无模型预测
Transit effects for non-linear index measurement in hot atomic vapors
论文作者
论文摘要
热原子蒸气由于其较大的Kerr非线性而广泛用于非线性和量子光学元件中。虽然线性折射率和传输是精确测量并在理论上对良好的建模，但对于易感性的$χ^{（3）} $非线性部分而言，相似的表征仍然是部分的。在这项工作中，我们提供了一组工具，以在稳态和培养基的瞬时响应期间，在数值上测量和估计热原子蒸气的非线性指数。我们将这些技术应用于rubidium热蒸气的表征，我们证明了由于有限的光束尺寸，在非线性指数的测量中，过境效应起着关键作用。
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.
