Partially coherent imaging with Schell-model beams

✍ Scribed by R. Castañeda; F.F. Medina

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 594 KB
• Volume: 29
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/s0030-3992(97)00006-6

✦ Synopsis

The agreement between the general description of imaging with quasimonochromatic spatially partial coherent optical fields and the concept of the Schell-model beam is analysed. Radiator pairs of object Schell-model beams at the entrance window of the imaging system yield interferograms with different periods, visibilities and fringe orientation onto the entrance pupil, whose superposition determines the intensity distribution there. Furthermore, the structure of the optical field in the entrance pupil will be modified by the properties of the imaging system through their transfer to the exit pupil. Radiator pairs in the exit pupil generate interferograms onto the exit window, whose superposition yields the image intensity distribution.

In the case of ideal imaging, the optical field in the exit window will also be constituted by image Schell-model beams, which are a scaled, inverted and proportional version of the object Schell-model beams, and the superposed interferograms in the exit window will be Young's interferograms.