华侨大学学报（自然科学版）2012，Vol.33Issue(1)：17-22,6.
随机电磁涡旋光束传输过程中斯托克斯参量和偏振度的变化
Changes in Stokes Parameters and Degree of Polarization of Stochastic Electromagnetic Vortex Beams on Propagation
摘要
Abstract
Based on the theory of cross-spectral density matrix and the propagation laws of cross-spectral density, the general formulae were derived to calculate the generalized Stokes parameters and degree of polarization for a class of stochastic electromagnetic vortex beam while propagating in free space. Meanwhile, the influence on propagation of the generalized Stokes parameters and the degree of polarization by the coherence length was analyzed. It is shown that the higher the correlation length (the higher the degree of coherence)is, the better the vertical component can keep; the Stokes parameters and the degree of polarization increase more slowly with the increment of the correlation length increase; the generalized Stokes parameters and the degree of polarization keep almost invariant while the coherence length is much larger than beam size.关键词
电磁涡旋光束/广义斯托克斯参量/偏振度/交叉谱密度/相干长度/自由空间Key words
stochastic electromagnetic vortex beam/ generalized stokes parameters/ polarization's degree/ cross-spectral density/ free space/ coherence length分类
数理科学引用本文复制引用
杨先才,丁攀峰,王燕飞..随机电磁涡旋光束传输过程中斯托克斯参量和偏振度的变化[J].华侨大学学报（自然科学版）,2012,33(1):17-22,6.基金项目
国家自然科学基金培育项目(JB-ZR1126) （JB-ZR1126）
福建省厦门市科技计划项目(3502Z20113017) （3502Z20113017）
