High-Order Harmonics of Bichromatic Counter-Rotating Elliptically-Polarized Drivers: Fully Controlled Polarization State and Novel Selection Rules

摘要

We show, theoretically and experimentally, that the polarization of high-order harmonics driven by counter-rotating elliptically-polarized bichromatic lasers are completely controllable: from linear through elliptic to circular polarization. New selection rules are observed.