三明学院学报
三明學院學報
삼명학원학보
JOURNAL OF SANMING COLLEGE
2011年
6期
30-35
,共6页
部分相干%径向偏振光%偏振度%交叉谱密度矩阵
部分相榦%徑嚮偏振光%偏振度%交扠譜密度矩陣
부분상간%경향편진광%편진도%교차보밀도구진
partially coherent%radially polarized%polarization degree%cross-spectral density matrix
基于交叉谱密度函数的传输定律及相干与偏振的统一理论,研究了部分相干径向偏振光在自由空间中的传输。结果表明：由于相干诱导作用,部分相干径向偏振光在自由空间中传输时其光强与偏振度都发生了变化,传输过程中径向偏振光的光强由原来的空心逐渐变为平顶接着变为高斯型,而不同的相干度下光束的偏振度在传输过程中的变化情况不同。
基于交扠譜密度函數的傳輸定律及相榦與偏振的統一理論,研究瞭部分相榦徑嚮偏振光在自由空間中的傳輸。結果錶明：由于相榦誘導作用,部分相榦徑嚮偏振光在自由空間中傳輸時其光彊與偏振度都髮生瞭變化,傳輸過程中徑嚮偏振光的光彊由原來的空心逐漸變為平頂接著變為高斯型,而不同的相榦度下光束的偏振度在傳輸過程中的變化情況不同。
기우교차보밀도함수적전수정률급상간여편진적통일이론,연구료부분상간경향편진광재자유공간중적전수。결과표명：유우상간유도작용,부분상간경향편진광재자유공간중전수시기광강여편진도도발생료변화,전수과정중경향편진광적광강유원래적공심축점변위평정접착변위고사형,이불동적상간도하광속적편진도재전수과정중적변화정황불동。
Based on the propagation law of the cross-spectral density function and the unified theory of coherence and polarization of partially coherent beams,the transmission characteristics of partially coherent radially polarized doughnut beam in free space is investigated.It is found that,after propagated through free space,the intensity distribution and degree of polarization changed,which induced by coherence of the partially coherent beams.The doughnut beam spot of the partially coherent radially polarized beam becomes a circular Gaussian beam.In addition,different initial coherence of the partially coherent beam induced different change situation in propagation.
