We present a novel technique to determine the beam propagation ratio M2 based on digital holograms allowing a fast M2 measurement without any moving components.
© 2013 OSA
C. Schulze, D. Flamm, M. Duparré, and A. Forbes, "Measurement of the Beam Propagation Ratio M2 with a Spatial Light Modulator," in Advanced Solid-State Lasers Congress, M. Ebrahim-Zadeh and I. Sorokina, eds., OSA Technical Digest (online) (Optical Society of America, 2013), paper JTh2A.01.
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