Continuous-wave self-deflection of an asymmetrical laser beam, with a deflection angle up to eight diffraction widths, and strong attenuation of the on-axis radiation were achieved in a short sodium-vapor cell. We determined that the nonlinear refractive index Δn varied almost linearly with intensity I, Δn ≈ n2I, with n2 ~ −10−7 cm2/W at ~200°C and intensities less than 220 W/cm2.
© 1988 Optical Society of America
Original Manuscript: June 24, 1988
Manuscript Accepted: August 16, 1988
Published: November 1, 1988
G. A. Swartzlander, H. Yin, and A. E. Kaplan, "Self-bending of a cw laser beam in sodium vapor," Opt. Lett. 13, 1011-1013 (1988)