宁夏大学学报（自然科学版）2011，Vol.32Issue(3)：226-230,5.
部分相干厄米-高斯光束在湍流大气中的M2因子
M2-factor for the Partially Coherent Hermite-Gaussian Beams in A Turbulent Atmosphere
摘要
Abstract
Based on the generalized Huygens-Fresnel principle and the definition of the second-order moments of the Wigner distribution function (WDF), the analytical formulas for the M2-factor of the partially coherent Hermite-Gaussian (PCHG) beams in turbulence is derived. The results show that the M2-factor of PCHG beams propagating through the atmospheric turbulence is found to be mainly determined by the beam order, degree of global coherence of the source, waist size, wavelength of the beams, structure constant of the refractive-index fluctuations of the turbulence and propagation distance. The M2-factor of PCHG beams in the turbulent atmosphere increases obviously with the beam order, structure constant of the refractive-index fluctuations of the turbulence and propagation distance. For a certain propagation distance, there is a optimal beam waist width of the beams, resulting in the minimum M2-factor of the PCHG beams in turbulence. However, Hermite-Gaussian beams and Gaussian Schell-model beams can be considered as particular cases of the PCHG beams.关键词
激光光学/部分相干厄米-高斯光束/M2因子/大气湍流Key words
laser optics/ partially coherent Hermite-Gaussian ( PCHG ) beams/ M2-factor/atmospheric turbulence分类
数理科学引用本文复制引用
黄永平,赵光普,段志春..部分相干厄米-高斯光束在湍流大气中的M2因子[J].宁夏大学学报（自然科学版）,2011,32(3):226-230,5.基金项目
四川省教育厅自然科学科研基金资助项目(10ZC032) （10ZC032）
宜宾学院自然科学基金资助项目(2010z06) （2010z06）
