Structured 3D linear space– time light bullets by nonlocal nanophotonics

• 作者: Cheng Guo Meng Xiao Meir Orenstein Shanhui Fan
• 来源期刊: 光：科学与应用（英文版）
• 年，卷（期）: 2021,（9）
• 所属期刊栏目: Articles
• 页码范围: 1687-1701
• 页数: 15页
• 语种: 英文

摘要

We propose the generation of 3D linear light bullets propagating in free space using a single passive nonlocal optical surface. The nonlocal nanophotonics can generate space–time coupling without any need for bulky pulse-shaping and spatial modulation techniques. Our approach provides simultaneous control of various properties of the light bullets, including the external properties such as the group velocity and the propagation distance, and internal degrees of freedom such as the spin angular momentum and the orbital angular momentum.