Zi-yang Chen,Ji-xiong Pu.Intensity modulation of a tightly focused partially coherent and radially polarized beam[J].Optoelectronics Letters,2013,9(5):393-396 Intensity modulation of a tightly focused partially coherent and radially polarized beam Author Name Affiliation E-mail Zi-yang Chen  Fujian Provincial Key Laboratory of Light Propagation and Transform, College of Information Science & Engineering, Huaqiao University, Xiamen, 361021, China    Ji-xiong Pu  Fujian Provincial Key Laboratory of Light Propagation and Transform, College of Information Science & Engineering, Huaqiao University, Xiamen, 361021, China  jixiong@hqu.edu.cn  Abstract:       Because of the circular symmetry of a completely coherent radially polarized beam, the azimuthal intensity component is zero when it is focused by a high numerical aperture (NA) objective. In this paper, we show that such a conclusion is not tenable under the illumination of partially coherent beam whose coherent property depends on the azimuthal angle. Taking the Gaussian Schell-model (GSM) beam for an example, the tight focusing property of a partially coherent beam is studied, and the intensity and its radial, azimuthal and longitudinal components are particularly researched. The results show that the percentage of the components on the total intensity depends on the correlation length of the partially coherent beam. The azimuthal intensity component is produced under the illumination of partially coherent beam. Hits: 4026 Download times: 104 View Full Text    Download reader