摘要
In the process of high-harmonic generation with a Laguerre-Gaussian （LG） mode, it was well established that the topological charge could be of an N-fold increase due to angular momentum conservation. Here, by mimicking the effect of high-harmonic generation, we devise a simple algorithm to generate optical vortex arrays carrying arbitrary topological charges with a single phase-only spatial light modulator. By initially preparing a coaxial superposition of suitable low-order LG modes, we demonstrate experimentally that the topological charges of the embedded vortices can be multiplied and transformed into arbitrarily high orders on demand, while the array structure remains unchanged. Our algorithm offers a concise way to efficiently manipulate the structured light beams and holds promise in optical micromanipulation and remote sensing.
In the process of high-harmonic generation with a Laguerre-Gaussian （LG） mode, it was well established that the topological charge could be of an N-fold increase due to angular momentum conservation. Here, by mimicking the effect of high-harmonic generation, we devise a simple algorithm to generate optical vortex arrays carrying arbitrary topological charges with a single phase-only spatial light modulator. By initially preparing a coaxial superposition of suitable low-order LG modes, we demonstrate experimentally that the topological charges of the embedded vortices can be multiplied and transformed into arbitrarily high orders on demand, while the array structure remains unchanged. Our algorithm offers a concise way to efficiently manipulate the structured light beams and holds promise in optical micromanipulation and remote sensing.
作者
Wuhong Zhang
Lixiang Chen
张武虹;陈理想(Department of Physics, College of Physics Science and Technology, Xiamen University)
基金
supported by the National Natural Science Foundation of China(NSFC)(Nos.11104233 and 11474238)
the Fundamental Research Funds for the Central Universities(No.20720160040)
the Natural Science Foundation of Fujian Province(No.2015J06002)
the Program for New Century Excellent Talents in University(NCET)(NCET-13-0495)
