التفاصيل البيبلوغرافية
| العنوان: |
Ultrafast control of vortex microlasers. |
| المؤلفون: |
Huang, Can, Zhang, Chen, Xiao, Shumin, Wang, Yuhan, Fan, Yubin, Liu, Yilin, Zhang, Nan, Qu, Geyang, Ji, Hongjun, Han, Jiecai, Ge, Li li.ge@csi.cuny.edu, Kivshar, Yuri ysk@internode.on.net, Song, Qinghai qinghai.song@hit.edu.cn |
| المصدر: |
Science. 2/28/2020, Vol. 367 Issue 6481, p1018-1021. 4p. 4 Diagrams. |
| مصطلحات موضوعية: |
*MICROLASERS, *QUANTUM information theory, *ENERGY consumption, *POLARIZED beams (Nuclear physics), *PICOSECOND pulses |
| مستخلص: |
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 that is orders of magnitude lower than in previously demonstrated all-optical switching. Our results provide an approach that breaks the long-standing trade-off between low energy consumption and high-speed nanophotonics, introducing vortex microlasers that are switchable at terahertz frequencies. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |