中国激光, 2016, 43 (9): 0905004, 网络出版: 2018-05-25
基于空间光调制器的高质量螺旋光束制备
Generation of High Quality Helical Beams Based on Spatial Light Modulator
衍射 轨道角动量 螺旋光束 空间光调制器 优化 diffraction orbital angular momentum helical beams spatial light modulator optimization
摘要
空间光调制器(SLM)使用波长范围较窄、衍射效率不高,限制了高质量螺旋光束研究的开展。鉴于此,提出一种有效的SLM优化方法,可极大地提高基于SLM制备螺旋光束的光束质量。以650 nm波长激光为例,制备了具有不同轨道角动量值的螺旋光束。通过实验分析螺旋光束的强度分布、衍射效率等特征,证明了该优化方法的有效性。
Abstract
The spatial light modulator (SLM) has narrow wavelength range and low diffraction efficiency, and limits the research of high-quality helical beams. Based on this, an effective SLM optimization method is proposed to greatly enhance the quality of helical beams produced by SLM. A laser with 650 nm wavelength is used as an example to produce the helical beams with different orbital angular momentums. The intensity distribution and diffraction efficiency of the generated helical beams are analyzed, and the experimental analysis proves the effectiveness of the proposed optimization method.
戴茂春, 樊代和, 王尧, 韦联福. 基于空间光调制器的高质量螺旋光束制备[J]. 中国激光, 2016, 43(9): 0905004. Dai Maochun, Fan Daihe, Wang Yao, Wei Lianfu. Generation of High Quality Helical Beams Based on Spatial Light Modulator[J]. Chinese Journal of Lasers, 2016, 43(9): 0905004.