| Autor: |
Chen, Yue-Yue, Feng, Xun-Li, Liu, Chengpu |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. Lett. 117, 023901 (2016) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.117.023901 |
| Popis: |
We numerically study the propagation of a few-cycle pulse carrying orbital angular momentum (OAM) through a dense atomic system. Nonlinear precursors consisting of high-order vortex har- monics are generated in the transmitted field due to ultrafast Bloch oscillation. The nonlinear precursors survive to propagation effects and are well separated with the main pulse, which provide a straightforward way of measuring precursors. By the virtue of carrying high-order OAM, the obtained vortex precursors as information carriers have potential applications in optical informa- tion and communication fields where controllable loss, large information-carrying capacity and high speed communication are required. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
