Polarization control of attosecond pulses using bi-chromatic elliptically polarized laser
arXiv:2108.05059 · doi:10.1088/1361-6455/ac3f97
Abstract
We study the higher-harmonic generation (HHG) using elliptically polarized two-color driving fields. The HHG via bi-chromatic counter-rotating laser fields is a promising source of circularly polarized ultrashort XUV radiation at the attosecond time scale. The ellipticity or the polarization of the attosecond pulses can be tweaked by modifying the emitted harmonics' ellipticity, which can be controlled by varying the driver fields. We propose a simple setup to control the polarization of the driving fields, which eventually changes the ellipticity of the attosecond pulses. A well-defined scaling law for the ellipticity of the attosecond pulse as a function of the rotation angle of the quarter-wave plate is also deduced by solving the time-dependent Schrodinger equation (TDSE) in two dimensions. The scaling law can further be explored to obtain the attosecond pulses of the desired degree of polarization, ranging from linear to elliptical to circular polarization.
arXiv comment7 pages, 6 figures
References in corpus (15)
- Generation of phase-matched circularly-polarized extreme ultraviolet high harmonics for magnetic circular dichroism spectroscopy
- Attosecond-resolved photoionization of chiral molecules
- A practical scheme for generating isolated elliptically polarized attosecond pulses using bi-chromatic counter rotating circularly polarized laser fields
- Spin conservation in high-order-harmonic generation using bicircular fields
- Nonadiabatic tunneling in circularly polarized laser fields: Derivation of formulas
- Irregular orbits generate higher harmonics
- Illuminating Molecular Symmetries with Bicircular High-Order-Harmonic Generation
- Solving the Schrödinger eigenvalue problem by the imaginary time propagation technique using splitting methods with complex coefficients
- Circular dichroism in angle-resolved photoemission spectroscopy of topological insulators
- Control of attosecond light polarization in two-color bi-circular fields
- Opportunities for detecting ring currents using the attoclock set-up
- Time-resolved high harmonic spectroscopy of dynamical symmetry breaking in bi-circular laser fields
- Attosecond control of spin polarization in electron-ion recollision driven by intense tailored fields
- Control of helicity of high-harmonic radiation using bichromatic circularly polarized laser fields
- Determination of the spectral variation origin in high-order harmonic generation in noble gases