Reduction of laser intensity scintillations in turbulent atmospheres using time averaging of a partially coherent beam

Autor:	Berman, G. P., Bishop, A. R., Chernobrod, B. M., Gorshkov, V. N., Lizon, D. C., Moody, D. I., Nguyen, D. C., Torous, S. V.
Rok vydání:	2009
Předmět:	Physics - Optics Physics - Computational Physics
Druh dokumentu:	Working Paper
DOI:	10.1088/0953-4075/42/22/225403
Popis:	We demonstrate experimentally and numerically that the application of a partially coherent beam (PCB) in combination with time averaging leads to a significant reduction in the scintillation index. We use a simplified experimental approach in which the atmospheric turbulence is simulated by a phase diffuser. The role of the speckle size, the amplitude of the phase modulation, and the strength of the atmospheric turbulence are examined. We obtain good agreement between our numerical simulations and our experimental results. This study provides a useful foundation for future applications of PCB-based methods of scintillation reduction in physical atmospheres. Comment: 18 pages, 14 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0906.4576 Zobrazit plný text záznamu View this record from Arxiv