@proceedings{12720,
  keywords = {Electric fields, High harmonic generation, Optical angular momentum, Optical vortices, Phase matching, Spiral phase},
  author = {Guan Gui and Nathan Brooks and Henry Kapteyn and Margaret Murnane and Chen-Ting Liao},
  title = {Conservation of spatiotemporal orbital angular momentum of light in nonlinear frequency conversion},
  abstract = {The conservation of spatiotemporal orbital angular momentum (ST-OAM) of light is observed in second-harmonic generation for the first time. The space-time topological charge of the fundamental ST-OAM field is doubled along with the optical frequency.},
  year = {2021},
  journal = {Frontiers in Optics, Laser Science 2021},
  pages = {FW5C.2},
  month = {2021-12},
  publisher = {Optica Publishing Group},
  url = {http://opg.optica.org/abstract.cfm?URI=FiO-2021-FW5C.2},
  doi = {10.1364/FIO.2021.FW5C.2},
}