Investigating factors affecting the emission of high-energy lasers in marine environments

Document Type : Promotion Article

Author

imam khamenei university. science college. basic science department.

Abstract

This article addresses key physical processes associated with the propagation of high-average power laser beams in a maritime environment. A number of physical processes affect and limit the amount of laser energy that can be delivered to a target. These effects are interrelated and include thermal blooming, turbulence, and molecular/aerosol absorption and scattering. These processes affect the laser intensity profile by modifying the refractive index of the air, which causes the laser beam wave front to distort. Wave front distortion results in enhanced transverse laser beam spreading, and can severely limit the amount of energy that can be propagated. The maritime environment is particularly challenging for high energy-laser (HEL) propagation because of its relatively high water vapor and aerosol content. In the infrared regime, water molecules and aerosols constitute the dominant source of absorption and scattering of laser energy, and represent a limitation for HELs propagating in a maritime atmosphere.

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References

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