Using the <i>z</i>-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 observe large nonlinear amplitude and phase effects with only tens of microwatts of incident power. Our results are in good agreement with numerical calculations based on an analytic model of a Doppler-broadened two-level system.
© 2003 Optical Society of America
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
C. F. McCormick, D. R. Solli, R. Y. Chiao, and J. M. Hickmann, "Nonlinear absorption and refraction in near-detuned rubidium vapor," J. Opt. Soc. Am. B 20, 2480-2483 (2003)