Liu Ruifeng, Qing Bingcheng, Zhao Shupeng, Zhang Pei, Gao Hong, Chen Shouqian, Li Fuli
Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
Research Center for Space Optics Engineering, Harbin Institute of Technology, Heilongjiang, Harbin 150001, People's Republic of China.
Phys Rev Lett. 2021 Oct 29;127(18):180601. doi: 10.1103/PhysRevLett.127.180601.
Optical speckle fields with both non-Rayleigh statistics and nondiffracting characteristics in propagation are an important light source for many applications. However, tailoring either non-Rayleigh statistical speckles or nondiffracting speckles are only investigated independently in previous studies. Here, we report the first observation of optical speckles that remain diffraction-free over a long axial distance while keeping non-Rayleigh statistics simultaneously. We further show the enhancement of Anderson localization of light with the non-Rayleigh nondiffracting speckles. The work presented here provides a versatile framework for customizing optical fields with desired speckle patterns for applications in the fields of solid-state physics, cold atoms, and optical imaging.
具有非瑞利统计特性且在传播过程中具有无衍射特性的光学散斑场是许多应用中的重要光源。然而，在以往的研究中，仅分别独立研究了非瑞利统计散斑或无衍射散斑的调控。在此，我们首次报道了一种光学散斑，其在长轴向距离上保持无衍射的同时还具有非瑞利统计特性。我们进一步展示了非瑞利无衍射散斑对光的安德森局域化的增强作用。本文的工作为定制具有所需散斑图案的光场提供了一个通用框架，可应用于固态物理、冷原子和光学成像等领域。
