INTENSITY DISTRIBUTION ACROSS A SOURCE FROM SPECTRAL MEASUREMENTS

Authors
KANDPAL HC VAISHYA JS SAXENA K MEHTA DS JOSHI KC
Citation
Hc. Kandpal et al., INTENSITY DISTRIBUTION ACROSS A SOURCE FROM SPECTRAL MEASUREMENTS, J. mod. opt., 42(2), 1995, pp. 455-464
Citations number
9
Categorie Soggetti
Optics
Journal title
J. mod. opt. → ACNP
ISSN journal
09500340
Volume
42
Issue
2
Year of publication
1995
Pages
455 - 464
Database
ISI
SICI code
0950-0340(1995)42:2<455:IDAASF>2.0.ZU;2-F
Abstract
The degree of spectral coherence (mu(12)(omega)) over the plane of a d ouble slit is determined from the measurement of spectral changes in Y oung's interference experiment using the spectral interference law. Th e experimental and theoretically calculated values of mu(12)(omega) fo r the experimental parameters agree well within experimental error, th us supporting the theoretical prediction of D. F. V. James and E. Wolf (1991, Phys. Lett. A, 157, 6). The degree of spectral coherence deter mined is used for estimating the intensity distribution across a sourc e. This new approach, being a simple spectral measurement technique, m ight find its application in astronomy, particularly for the study of intensity distribution across stars.