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Proceedings Article

Pseudo-partially coherent beam for free-space laser communication

[+] Author Affiliations
David Voelz, Kevin Fitzhenry

New Mexico State Univ. (USA)

Proc. SPIE 5550, Free-Space Laser Communications IV, 218 (October 20, 2004); doi:10.1117/12.562566
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From Conference Volume 5550

  • Free-Space Laser Communications IV
  • Jennifer C. Ricklin; David G. Voelz
  • Denver, CO | August 02, 2004

abstract

The use of laser beams with partial spatial coherence can reduce spatial intensity variations (scintillation) due to turbulence and therefore improve the performance of atmospheric laser communication links. For optimal performance the partial coherence needs to be managed such that there is a balance between scintillation reduction and beam spread. However, the practical creation of a partially coherent beam can be problematic. We discuss a concept where a simplified modulated phase pattern is imparted to a coherent source beam that, along with the inherent time averaging of the photodetection process, produces a beam with partially coherent characteristics. Results from a laboratory demonstration are presented that illustrate the potential application of this concept for free-space laser communications.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

David Voelz and Kevin Fitzhenry
"Pseudo-partially coherent beam for free-space laser communication", Proc. SPIE 5550, Free-Space Laser Communications IV, 218 (October 20, 2004); doi:10.1117/12.562566; http://dx.doi.org/10.1117/12.562566


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