All Publications


  • Interferometry of dipole phase in high harmonics from solids NATURE PHOTONICS Lu, J., Cunningham, E. F., You, Y., Reis, D. A., Ghimire, S. 2019; 13 (2): 96-+
  • Crystal orientation-dependent polarization state of high-order harmonics OPTICS LETTERS You, Y., Lu, J., Cunningham, E. F., Roedel, C., Ghimire, S. 2019; 44 (3): 530–33

    Abstract

    We analyze the crystal orientation-dependent polarization state of extreme ultraviolet high-order harmonics from bulk magnesium oxide crystals subjected to intense linearly polarized laser fields. We find that only along high-symmetry directions do high-order harmonics follow the polarization direction of the laser field. In general, there are strong deviations that depend on harmonic order, strength of the laser field, and crystal orientation. We use a real-space electron trajectory picture to understand the origin of polarization deviations. These results have implications in all-optical probing of electronic band structure in momentum space and valence charge distributions in real space, and in producing attosecond pulses with time-dependent polarization in compact setups.

    View details for DOI 10.1364/OL.44.000530

    View details for Web of Science ID 000457292400017

    View details for PubMedID 30702671

  • Probing periodic potential of crystals via strong-field re-scattering JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS You, Y., Cunningham, E., Reis, D. A., Ghimire, S. 2018; 51 (11)
  • Phase-coherence of high-order harmonics from bulk crystals using homodyne detection Cunningham, E., You, Y., Reis, D. A., Ghimire, S., IEEE IEEE. 2017