Real-time phase measurement and correction of dynamic multimode beam using a single spatial light modulator

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2020,（1）
• 页码范围: 54-58
• 页数: 5页
• 语种: 英文
• DOI: 10.3788/COL202018.011404

摘要

In this Letter,a novel system for adaptively correcting the phase of a dynamic multimode beam is proposed.While using merely one spatial light modulator,the phase measurement of the first-order diffraction pattern and the correction of the zeroth diffraction order are simultaneously realized.The real-time experimental result is obtained at a control rate of 10 Hz.The power-in-the-bucket value is improved from 38.5％ to 61.8％,even with fundamental mode content that is consistently below 30％.To the best of our knowledge,this is the first implementation of real-time adaptive correction of the entire multimode beam.