弱湍流大气传输广义Helmholtz-Gauss光束  

Propagation of generalized Helmholtz-Gauss beam in turbulent atmosphere

作　　者：张逸新[1] 

机构地区：[1]江南大学理学院 江苏无锡214122

出　　处：《激光杂志》2008年第3期55-56,共2页Laser Journal

摘　　要：在Rvtov近似和采用Tatarskii湍流大气折射率起伏谱条件下,运用实数和复数矩阵元的ABCD矩阵研究了湍流大气中广义Helmholtz-Gauss束的传输规律,研究表明广义Hellmholtz-Gauss束的横向波数与高斯束传输参量q的积在弱湍流大气传输过程中保持不变。导出了湍流大气中传输广义Helmholtz-Gauss束的平均光强。Using the Rytov approximation and the Tatarskii spectrum of refractive index fluctuations of turbulent atmosphere, we analyze the propagation of Generalized Helmholtz- Gauss beam（gHzG） in turbulent atmosphere by ABCD matrices with real and complex elements. The results show that the product of the transverse wavenumher and the parameter q remains constant under propagation in weak atmospheric turbulence. A closed - form expression for the intensity of gHzG beams is derived.

关 键 词：Helmholtz-Gauss束 平均光强 复振幅 大气湍流 

分 类 号：TN929.12[电子电信—通信与信息系统] P427.113[电子电信—信息与通信工程]