Generation of regular optical vortex arrays using double gratings

• 作者: SUN Hai-bin ZHANG Xin-yu SUN Ping
• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: Optical Physics
• 页码范围: 317-320
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11801-021-0047-0

摘要

In order to generate high quality regular optical vortex array (OVA),we present an experimental method for generat-ing OVA using phase only liquid crystal spatial light modulator (LC-SLM) assisted two gratings.In the scheme,holo-grams of two grating are displayed on the screen of two LC-SLMs respectively;the diffraction optical fields are cap-tured by a CCD camera.The simulated and experimental results show that the regular OVA can be generated by using double diffraction gratings.The generated OVAs have a constant topological charge of ±1.The method can provide a useful pathway to produce regular OVA for some applications in optical communication,particle trapping and optical metrology.