Circularly polarised attosecond pulses: generation and applications

ABSTRACT

Molecular high-order harmonic generation(MHOHG) is simulated for H⁺₂ in the nonlinear nonperturbative regime of laser-molecule interactions with ultrashort intense circularly polarised laser pulses. It is shown that combinations of co-rotating or counter-rotating pulses produce laser-induced Coriolis forces with electron-parent ion recollisions, thus enhancing circularly polarised MHOHG, the source of circularly polarised attosecond pulses. Such pulses can be used to induce electron attosecond currents for the generation of attosecond magnetic field pulses, new tools for molecular attomagnetism.

KEYWORDS:

• molecular high-order harmonic generation
• circularly polarised attosecond pulses
• electron currents
• magnetic field pulses

Acknowledgements

The authors thank Compute Canada for access to massively parallel computer clusters and NSERC, FQRNT for financial support in their ultrafast science programs.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The authors thank NSERC, FQRNT for financial support in their ultrafast science programs.