Characterizing vortex beams from a spa is light modulator with collinear phase-shifting holography
Characterizing vortex beams from a spa is light modulator with collinear phase-shifting holography
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DOI：
10.1364/ao.58.000404
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发表时间：
2019-01-10
期刊：
影响因子：
1.9
通讯作者：
Siemens, Mark E.
中科院分区：
文献类型：
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作者：
Andersen, Jasmine M.;Alperin, Samuel N.;Siemens, Mark E.
我们用共线相移全息术测量了激光通过空间光调制器(SLM)产生的具有轨道角动量(OAM)的扭转光束的复光学模式。这项技术测量沿SLM传播方向的模式，不需要额外的光学元件，因此它可以用于辅助SLM的对准，有效地检查光束漂移的影响，并在用于其他实验之前充分表征产生的光束。优化的误差分析和仔细的SLM对准使我们能够生成和测量纯度高达99.9%的OAM。(C)2019年美国光学学会
We demonstrate collinear phase-shifting holography for measuring complex optical modes of twisted light beams with orbital angular momentum (OAM) generated by passing a laser through a spatial light modulator (SLM). This technique measures the mode along the direction of propagation from the SLM and requires no additional optics, so it can be used to aid alignment of the SLM, to efficiently check for the effects of beam wander, and to fully characterize generated beams before use in other experiments. Optimized error analysis and careful SLM alignment allow us to generate and measure OAM with purity as high as 99.9%. (C) 2019 Optical Society of America