Influence of Polarization on the Spectral Changes of Stochastic Electromagnetic Pulsed Beams
An analytical expression for the spectrum of stochastic spatially and temporally partially coherent electromagnetic Gaussian Schell-model pulsed (GSMP) beams is derived, and used to study the spectral changes of electromagnetic GSMP beams in free space. The influence of polarization on the on-axis relative spectral shift is emphasized. It is shown that the on-axis relative spectral shift increases with increasing the degree of polarization of source P0 for the case of δxx≠δyy, i.e. the spatial coherence length δxx of x component of the electric field at the source is not equal to that of y component. For δxx=δyy or δxx→∞ and δyy→∞, the on-axis relative spectral shift is independent of P0.
Yuan Ming Huang
L. Z. Pan et al., "Influence of Polarization on the Spectral Changes of Stochastic Electromagnetic Pulsed Beams", Materials Science Forum, Vols. 663-665, pp. 113-117, 2011