Demonstration of a multiwave coherent holographic beam combiner in a polymeric substrate.
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We demonstrate an efficient coherent holographic beam combiner (CHBC) that uses angle multiplexing of gratings in a thick polymeric substrate. Our experimental results compare well with the theoretical model based on the coupled-wave theory of multiwave mixing in a passive medium. A CHBC of this type may prove useful in producing a high-power laser by combining amplified beams produced by splitting a master oscillator. Furthermore, the ability to angle multiplex a large number of beams enables a CHBC to be used in multiple-beam interferometry applications as a high-precision surface sensor.
author list (cited authors)
Yum, H. N., Hemmer, P. R., Heifetz, A., Shen, J. T., Lee, J. K., Tripathi, R., & Shahriar, M. S.