کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1536445 | 996568 | 2012 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Stokes beams formed by superposition of a completely unpolarized and a completely polarized Gaussian Schell-model beam Stokes beams formed by superposition of a completely unpolarized and a completely polarized Gaussian Schell-model beam](/preview/png/1536445.png)
Analytic expressions and computed examples are given to elucidate the coherence and polarization properties of Stokes beams, i.e. beams formed by superposition of a completely unpolarized and a completely polarized electromagnetic Gaussian Schell-model beam. We found that superposition of such two beams cannot form a Stokes beam with a constant state of polarization on propagation. An additional constraint on the source plane parameters of the two Gaussian Schell-model beams is proposed. The resultant Stokes beam with a constant state of polarization on propagation is found to be a Gaussian Schell-model beam with the same variances as the two constituent Gaussian Schell-model beams. However, the modulus of the Gaussian intensity distributions across the source planes of these beams may be different.
Journal: Optics Communications - Volume 285, Issue 24, 1 November 2012, Pages 4719–4726