Shaping Laguerre-Gaussian laser modes with binary gratings using a digital micromirror device

Vitaly Lerner, David Shwa, Yehonathan Drori, Nadav Katz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

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%.

Original languageAmerican English
Pages (from-to)4826-4828
Number of pages3
JournalOptics Letters
Volume37
Issue number23
DOIs
StatePublished - 1 Dec 2012

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