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Open Access Publications from the University of California

81-beam coherent combination using a programmable array generator.

  • Author(s): Du, Qiang;
  • Wang, Dan;
  • Zhou, Tong;
  • Li, Derun;
  • Wilcox, Russell
  • et al.

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We have generated 81 independently controllable beams using a spatial light modulator and combined them on a diffractive combiner, to characterize the combiner and develop a fast phase error detection scheme. A key parameter of the diffractive combiner is measured in a new way, enabling an efficient combination when programming calibrated phases of each beam. This testbed provides a platform for development of advanced feedback phase control of high channel-count beam combination.

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