Atomic vapors make flexible and useful nonlinear optical media when light is detuned far
from resonances. However, few direct measurements of their nonlinear coefficients have …

Using the z-scan technique, we have measured the self-induced absorptive and refractive
nonlinear behavior of hot atomic rubidium vapor within the Doppler profile of the D2 line. We …

Atomic vapors are systems well suited for nonlinear optics studies but very few direct
measurements of their nonlinear refractive index have been reported. Here we use the z …

We outline a complete theory of the nonlinear susceptibility of cesium around 1.06 μm, and
present the first measurements of the negative nonlinear refractive index n 2 primarily …

Resonant enhancement of nonlinear susceptibility in sodium vapour resulting in an intensity
dependent nonlinear refractive index was investigated using the Z-scan technique …

We show that long-lived bright Zeeman coherence that is responsible for absorption
enhancement and steep anomalous dispersion in an atomic medium gives rise to a giant …

We present measurements of the third-order optical nonlinearity of Kr, Xe, N 2, O 2, and air
at a wavelength near 10 µm by using four-wave mixing of∼ 15-GW/cm 2, 200-ps (full width …

Motivated by the ongoing controversy over the origin of the nonlinear index saturation and
subsequent intensity clamping in femtosecond filaments, we study the atomic nonlinear …

The Kerr nonlinear index of refraction for rubidium atoms is measured by using an optical
ring cavity with and without electromagnetically induced transparency (EIT). Significant …

We directly measure the nonlinear optical response in argon and nitrogen in a thin gas
target to laser intensities near the ionization threshold. No instantaneous negative nonlinear …