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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 22 — Nov. 15, 2012
  • pp: 4687–4689

Beam-quality measurements using a spatial light modulator

Christian Schulze, Daniel Flamm, Michael Duparré, and Andrew Forbes  »View Author Affiliations

Optics Letters, Vol. 37, Issue 22, pp. 4687-4689 (2012)

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We present a fast and easy technique for measuring the beam propagation ratio, M2, of laser beams using a spatial light modulator. Our technique is based on digitally simulating the free-space propagation of light, thus eliminating the need for the traditional scan in the propagation direction. We illustrate two approaches to achieving this, neither of which requires any information of the laser beam under investigation nor necessitates any moving optical components. The comparison with theoretical predictions reveals excellent agreement and proves the accuracy of the technique.

© 2012 Optical Society of America

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(140.3295) Lasers and laser optics : Laser beam characterization
(070.6120) Fourier optics and signal processing : Spatial light modulators

ToC Category:
Fourier Optics and Signal Processing

Original Manuscript: August 3, 2012
Revised Manuscript: September 5, 2012
Manuscript Accepted: September 20, 2012
Published: November 9, 2012

Christian Schulze, Daniel Flamm, Michael Duparré, and Andrew Forbes, "Beam-quality measurements using a spatial light modulator," Opt. Lett. 37, 4687-4689 (2012)

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