A method for numerically recovering the coherent modes and their occupancies from a known mutual optical intensity function is described. As an example, the technique is applied to previously published experimental data from an x-ray undulator source. The data are found to be described by three coherent modes, and the functional forms and relative occupancies of these modes are recovered.
© 2009 Optical Society of America
Original Manuscript: March 11, 2009
Revised Manuscript: June 10, 2009
Manuscript Accepted: June 17, 2009
Published: July 13, 2009
Samuel Flewett, Harry M. Quiney, Chanh Q. Tran, and Keith A. Nugent, "Extracting coherent modes from partially coherent wavefields," Opt. Lett. 34, 2198-2200 (2009)