Measurements of partially spatially coherent laser beam intensity fluctuations propagating through a hot-air turbulence emulator and comparison with both terrestrial and maritime environments

C. Nelson, S. Avramov-Zamurovic, O. Korotkova, R. Malek-Madani, R. Sova, Frederic Davidson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Measurements of partially spatially coherent infra-red laser beam intensity fluctuations propagating through a hot-air turbulence emulator are compared with visible laser beam intensity fluctuations in the maritime and IR laser beam intensity fluctuations in the terrestrial environment at the United States Naval Academy. The emulator used in the laboratory for the comparison is capable of generating controlled optical clear air turbulence ranging from weak to strong scintillation. Control of the degree of spatial coherence of the propagating laser beam was accomplished using both infrared and visible spatial light modulators. Specific statistical analysis compares the probability density and temporal autocovariance functions, and fade statistics of the propagating laser beam between the in-laboratory emulation and the maritime field experiment. Additionally, the scintillation index across varying degrees of spatial coherence is compared for both the maritime and terrestrial field experiments as well as the in-laboratory emulation. The possibility of a scintillation index 'sweet' spot is explored.

Original languageEnglish (US)
Title of host publicationFree-Space Laser Communication and Atmospheric Propagation XXV
DOIs
StatePublished - May 30 2013
EventFree-Space Laser Communication and Atmospheric Propagation XXV - San Francisco, CA, United States
Duration: Feb 5 2013Feb 7 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8610
ISSN (Print)0277-786X

Other

OtherFree-Space Laser Communication and Atmospheric Propagation XXV
CountryUnited States
CitySan Francisco, CA
Period2/5/132/7/13

Keywords

  • Free-space optical communications
  • atmospheric turbulence
  • hot-air turbulence emulator
  • maritime
  • partial spatial coherence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Nelson, C., Avramov-Zamurovic, S., Korotkova, O., Malek-Madani, R., Sova, R., & Davidson, F. (2013). Measurements of partially spatially coherent laser beam intensity fluctuations propagating through a hot-air turbulence emulator and comparison with both terrestrial and maritime environments. In Free-Space Laser Communication and Atmospheric Propagation XXV [86100T] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8610). https://doi.org/10.1117/12.2003307