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Optics Letters

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  • Vol. 11, Iss. 5 — May. 1, 1986
  • pp: 303–305

Coherent summation of laser beams using binary phase gratings

Wilfrid B. Veldkamp, James R. Leger, and Gary J. Swanson  »View Author Affiliations


Optics Letters, Vol. 11, Issue 5, pp. 303-305 (1986)
http://dx.doi.org/10.1364/OL.11.000303


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Abstract

A method for coherent addition of lasers is presented that uses binary phase-only gratings. It is shown that a grating that splits a single beam into N equal orders with high efficiency can be used in reverse to convert N laser beams into a single beam with the same efficiency. Experiments to demonstrate the conversion of seven beams to one beam are performed with a resulting conversion efficiency of 75%. An experimental apparatus is described that adds the power from both two and three He–Ne lasers (wavelength, 3.39 μm) with efficiencies as high as 83%.

© 1986 Optical Society of America

History
Original Manuscript: December 12, 1985
Manuscript Accepted: February 20, 1986
Published: May 1, 1986

Citation
Wilfrid B. Veldkamp, James R. Leger, and Gary J. Swanson, "Coherent summation of laser beams using binary phase gratings," Opt. Lett. 11, 303-305 (1986)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-11-5-303


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References

  1. H. Dammann, K. Goertler, Opt. Commun. 3, 312 (1971). [CrossRef]
  2. U. Killat, G. Rabe, W. Rave, Fiber Integ. Opt. 4, 159 (1982). [CrossRef]

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