Ray and van Cittert-Zernike characterization of spatial coherence

Citation
Jm. Sasian et al., Ray and van Cittert-Zernike characterization of spatial coherence, APPL OPTICS, 40(7), 2001, pp. 1037-1043
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
APPLIED OPTICS
ISSN journal
00036935 → ACNP
Volume
40
Issue
7
Year of publication
2001
Pages
1037 - 1043
Database
ISI
SICI code
0003-6935(20010301)40:7<1037:RAVCCO>2.0.ZU;2-5
Abstract
We discuss a ray and a van Cittert-Zernike characterization of spatial cohe rence in condensers for projection systems. We present a rule of thumb with which to estimate the modulus of the coherence function at a given point o f the illuminated object and a ray-tracing methodology with which to determ ine this modulus. For uniform illumination of the pupil we relate the modul us of the coherence function and the pupil-filling factor. We suggest that the rms of the angular ray spread at a given object point is an appropriate metric with which to characterize local coherence properties. (C) 2001 Opt ical Society of America OCIS codes: 080.3620, 110.3960, 110.4980.