dorsal/arxiv
View SchemaScintillation index for two Gaussian laser beams with different wavelengths in weak atmospheric turbulence
| Authors | Avner Peleg, Jerome V. Moloney |
|---|---|
| Categories | |
| ArXiv ID | physics/0606193 |
| URL | https://arxiv.org/abs/physics/0606193 |
| DOI | 10.1364/JOSAA.23.003114 |
Abstract
We study propagation of two lowest order Gaussian laser beams with different wavelengths in weak atmospheric turbulence. Using the Rytov approximation and assuming a slow detector we calculate the longitudinal and radial components of the scintillation index for a typical free space laser communication setup. We find the optimal configuration of the two laser beams with respect to the longitudinal scintillation index. We show that the value of the longitudinal scintillation for the optimal two-beam configuration is smaller by more than 50% compared with the value for a single lowest order Gaussian beam with the same total power. Furthermore, the radial scintillation for the optimal two-beam system is smaller by 35%-40% compared with the radial scintillation in the single beam case. Further insight into the reduction of intensity fluctuations is gained by analyzing the self- and cross-intensity contributions to the scintillation index.
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"abstract": "We study propagation of two lowest order Gaussian laser beams with different\nwavelengths in weak atmospheric turbulence. Using the Rytov approximation and\nassuming a slow detector we calculate the longitudinal and radial components of\nthe scintillation index for a typical free space laser communication setup. We\nfind the optimal configuration of the two laser beams with respect to the\nlongitudinal scintillation index. We show that the value of the longitudinal\nscintillation for the optimal two-beam configuration is smaller by more than\n50% compared with the value for a single lowest order Gaussian beam with the\nsame total power. Furthermore, the radial scintillation for the optimal\ntwo-beam system is smaller by 35%-40% compared with the radial scintillation in\nthe single beam case. Further insight into the reduction of intensity\nfluctuations is gained by analyzing the self- and cross-intensity contributions\nto the scintillation index.",
"arxiv_id": "physics/0606193",
"authors": [
"Avner Peleg",
"Jerome V. Moloney"
],
"categories": [
"physics.optics"
],
"doi": "10.1364/JOSAA.23.003114",
"title": "Scintillation index for two Gaussian laser beams with different wavelengths in weak atmospheric turbulence",
"url": "https://arxiv.org/abs/physics/0606193"
},
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