Ultrafast control of vortex microlasers

The development of classical and quantum information-processing technology calls for on-chip integrated sources of structured light. Although integrated vortex microlasers have been previously demonstrated, they remain static and possess relatively high lasing thresholds, making them unsuitable for high-speed optical communication and computing. We introduce perovskite-based vortex microlasers and demonstrate their application to ultrafast all-optical switching at room temperature. By exploiting both mode symmetry and far-field properties, we reveal that the vortex beam lasing can be switched to linearly polarized beam lasing, or vice versa, with switching times of 1 to 1.5 picoseconds and energy consumption…

• NS
  National Science Foundation

  Award: PHY-1847240
• AR
  Australian Research Council

  Award: DP200101168
• NK
  National Key Research and Development Program of China

  Award: SQ2018YFB220027
• SF
  Shenzhen Fundamental Research and Discipline Layout project

  Award: JCYJ20180507184613841
• NK
  National Key Research and Development Program of China Stem Cell and Translational Research

  Award: SQ2018YFB220027