Ultrafast High-Sensitivity Characterization of Refractive Index Transients Induced by Plasmas or Kerr Effect Using Cross-Polarized Common-Path Temporal Interferometry

A cross-polarized common-path temporal interferometer using balanced detection was developed for measuring refractive index transients due to plasmas or Kerr effect with a sensitivity of 0.5 mrad and a temporal resolution of 10 fs. (C) 2021 The Author(s).