Vol. 17, issue 10, article # 6

Kistenev Yu.V. Optical rectification upon self-action of femtosecond laser pulses in air. // Atmospheric and oceanic optics. 2004. V. 17. No. 10. P. 742-744.
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The paper analyzes possible mechanism of manifestation of second-order nonlinear effects, in particular, the effect of optical rectification, upon propagation of femtosecond laser pulses in air under self-action conditions. With a Ti:Sapphire laser as an example, it is shown that the laser pulse propagation under such conditions is accompanied by generation of a video pulse, whose shape is determined by the derivative of the spatiotemporal shape of the laser field envelope.