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arXiv · 1509.02232

Measurement of the nonlinear refractive index of air constituents at mid-infrared wavelengths

S. Zahedpour·J. K. Wahlstrand·H. M. Milchberg
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Abstract

We measure the nonlinear refractive index coefficients in N$_2$, O$_2$ and Ar from visible through mid-infrared wavelengths (λ= 0.4 - 2.4 μm). The wavelengths investigated correspond to transparency windows in the atmosphere. Good agreement is found with theoretical models of $χ^{(3)}$. Our results are essential for accurately simulating the propagation of ultrashort mid-IR pulses in the atmosphere.

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S. Zahedpour, J. K. Wahlstrand, H. M. Milchberg. 2015-10-02. Measurement of the nonlinear refractive index of air constituents at mid-infrared wavelengths. https://doi.org/10.1364/ol.40.005794

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