Attosecond Transient Absorption Spectroscopy without Inversion Symmetry

24 Feb 2020 Drescher Lorenz Vrakking Marc J. J. Mikosch Jochen

Transient absorption is a very powerful observable in attosecond experiments on atoms, molecules and solids and is frequently used in experiments employing phase-locked few-cycle infrared and XUV laser pulses derived from high harmonic generation. We show numerically and analytically that in non-centrosymmetric systems, such as many polyatomic molecules, which-way interference enabled by the lack of parity conservation leads to new spectral absorption features, which directly reveal the laser electric field... (read more)

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