Light-induced states in the transient-absorption spectrum of a periodically pumped strong-field-excited system

Abstract

The transient-absorption spectrum of a $V$-type three-level system is investigated, when this is periodically excited by a train of equally spaced, $\delta$-like pump pulses as, e.g., from an optical-frequency-comb laser. We show that, even though the probe pulse is not assumed to be much shorter than the pump pulses, light-induced states appear in the absorption spectrum. The frequency- and time-delay-dependent features of the absorption spectra are investigated as a function of several laser control parameters, such as the number of pump pulses used, their pulse area, and the pulse-to-pulse phase shift. We show that the frequencies of the light-induced states and the time-delay-dependent features of the spectra contain information on the action of the intense pulses exciting the system, which can thus complement the information on light-imposed amplitude and phase changes encoded in the absorption line shapes.

arXiv comment26 pages, 8 figures

References in corpus (12)

• Lorentz meets Fano spectral line shapes: A universal phase and its laser control
• Relativistic many-body calculations of electric-dipole matrix elements, lifetimes and polarizabilities in rubidium
• Quantum state-resolved probing of strong-field-ionized xenon atoms using femtosecond high-order harmonic transient absorption spectroscopy
• Control of Four-Level Quantum Coherence via Discrete Spectral Shaping of an Optical Frequency Comb
• Precise Control of Molecular Dynamics with a Femtosecond Frequency Comb - A Weak Field Route to Strong Field Coherent Control
• High resolution atomic coherent control via spectral phase manipulation of an optical frequency comb
• Beyond the single-atom response in absorption lineshapes: Probing a dense, laser-dressed helium gas with attosecond pulse trains
• Broadband high-resolution x-ray frequency combs
• Analytic modeling of structures in attosecond transient-absorption spectra
• The dynamics of three-level $\Lambda$-type system driven by the trains of ultrashort laser pulses
• Deterministic strong-field quantum control
• Transient-absorption phases with strong probe and pump pulses