Phys. Rev. Lett. 102, 063601 (2009) [4 pages]Attosecond Circular Dichroism Spectroscopy of Polyatomic MoleculesReceived 24 May 2008; published 9 February 2009 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.063601
DOI:
10.1103/PhysRevLett.102.063601
PACS:
42.50.Hz, 33.80.Wz
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