Broadband large-ellipticity harmonic generation with polar molecule

Abstract

We investigate the polarization properties of high harmonic generation from polar molecules with a linearly polarized field. It is found that elliptically polarized harmonics are observed in a wide spectral range from the plateau to the cutoff. Further analyses show that the nonsymmetric structure of the highest occupied molecular orbital is the origin of ellipticity of the harmonics. The results provide a method for generation of large-ellipticity XUV pulses, which will benefit the application of HHG as a tool of detection in materials and biology science.

9 pages

References in corpus (4)

• Isolated sub-100-attosecond pulse generation via controlling electron dynamics
• Polarization and ellipticity of high-order harmonics from aligned molecules generated by linearly polarized intense laser pulses
• Inducing elliptically polarized high-order harmonics from aligned molecules with linearly polarized femtosecond pulses
• Carrier-envelope phase measurement from half-cycle high harmonics

Cited by in corpus (3)

• Role of the Coulomb potential on the ellipticity in atomic high-order harmonics generation
• Probing rotational wave-packet dynamics with the structural minimum in high-order harmonic spectra
• Imprints of the molecular-orbital geometry on the high-harmonic ellipticity