Current Optics and Photonics

Optical Society of Korea (한국광학회)
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High Power Coherent Beam Combining Setup Using Modified Cascaded Multi-dithering Technique

  • Ahn, Hee Kyung (Space Optics Team, Advanced Instrumentation Institute, Korea Research Institute of Standards and Science) ;
  • Lee, Hwihyeong (Space Optics Team, Advanced Instrumentation Institute, Korea Research Institute of Standards and Science) ;
  • Kong, Hong Jin (Korea Advanced Institute of Science and Technology)
  • Received : 2018.09.01
  • Accepted : 2018.09.21
  • Published : 2018.10.25
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Abstract

A modified setup of a CMD technique for high power coherent beam combining was presented to address an issue of low damage threshold of electro-optic modulators. The feasibility of the modified setup was demonstrated by combining eight fiber beams, and it was successfully performed with ${\lambda}/44$ of residual phase error and 100 Hz of control bandwidth. It is expected that the modified CMD setup facilitates ultra-high power coherent beam combination without a limitation caused by the low damage threshold of electro-optic modulators.

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References

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