Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel.
Opt Lett. 2012 Dec 1;37(23):4826-8. doi: 10.1364/OL.37.004826.
Laguerre-Gaussian (LG) beams are used in many research fields, including microscopy, laser cavity modes, and optical tweezing. We developed a holographic method to generate pure LG modes (amplitude and phase) with a binary amplitude-only digital micromirror device (DMD) as an alternative to the commonly used phase-only spatial light modulator. The advantages of such a DMD include very high frame rates, low cost, and high damage thresholds. We have shown that the propagating shaped beams are self-similar and their phase fronts are of helical shape as demanded. We estimate the purity of the resultant beams to be above 94%.
拉盖尔-高斯（LG）光束在许多研究领域中都有应用，包括显微镜、激光腔模式和光镊。我们开发了一种全息方法，使用二进制振幅型数字微镜器件（DMD）来产生纯 LG 模式（幅度和相位），这是一种替代常用的纯相位空间光调制器的方法。这种 DMD 的优点包括非常高的帧率、低成本和高损伤阈值。我们已经证明，传播的整形光束是自相似的，并且它们的相位前沿是所需的螺旋形状。我们估计得到的光束的纯度高于 94%。
