Smirnova Olga, Patchkovskii Serguei, Mairesse Yann, Dudovich Nirit, Villeneuve David, Corkum Paul, Ivanov Misha Yu
National Research Council, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada.
Phys Rev Lett. 2009 Feb 13;102(6):063601. doi: 10.1103/PhysRevLett.102.063601. Epub 2009 Feb 9.
We describe the roles of multiple electronic continua in high-harmonic generation from aligned molecules. First, we show how the circularity of emitted harmonics tracks the interplay of different electronic continua participating in the nonlinear response. Second, we show that the interplay of different continua can lead to large variations of harmonic phases. Finally, we show how multiple electronic continua allow one to shape the polarization of high harmonics and attosecond pulses.
我们描述了多个电子连续体在取向分子高次谐波产生中的作用。首先，我们展示了发射谐波的圆偏振如何追踪参与非线性响应的不同电子连续体之间的相互作用。其次，我们表明不同连续体之间的相互作用会导致谐波相位的大幅变化。最后，我们展示了多个电子连续体如何使人们能够塑造高次谐波和阿秒脉冲的偏振。
