.Fractional Fourier transform for annular flat-topped beams[J].Optoelectronics Letters,2010,6(1):72-76 Fractional Fourier transform for annular flat-topped beams 唐斌 School;Mathematics;Physics;Jiangsu;Polytechnic;University; Abstract:       The fractional Fourier transform (FRFT) is applied to treat the propagation of annular flat-topped beams. Based on the definition of FRFT in the cylindrical coordinate system, analytical formulae are derived for annular flat-topped beams through the FRFT optical systems. By using the formulae, the properties of annular flat-topped beams in the FRFT plane are illustrated numerically. The results show that the intensity distribution properties in the FRFT plane are closely related to the fractional order of t... Hits: 4007 Download times: 232 View Full Text    Download reader