Shaping Laguerre-Gaussian laser modes with binary gratings using a Digital Micromirror Device
Optics
2012-12-03 v2
Abstract
Laguerre-Gaussian (LG) beams are used in many research fields, such as microscopy, laser cavity modes and optical tweezing. We develop a holographic method of generating 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 show 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%.
Keywords
Cite
@article{arxiv.1208.4278,
title = {Shaping Laguerre-Gaussian laser modes with binary gratings using a Digital Micromirror Device},
author = {Vitaly Lerner and David Shwa and Yehonathan Drori and Nadav Katz},
journal= {arXiv preprint arXiv:1208.4278},
year = {2012}
}