Intensity Distribution Across a Source from Spectral Measurements
- 1 February 1995
- journal article
- research article
- Published by Taylor & Francis in Journal of Modern Optics
- Vol. 42 (2) , 455-464
- https://doi.org/10.1080/09500349514550401
Abstract
The degree of spectral coherence (μ12(ω)) over the plane of a double slit is determined from the measurement of spectral changes in Young's interference experiment using the spectral interference law. The experimental and theoretically calculated values of μ12(ω)) for the experimental parameters agree well within experimental error, thus supporting the theoretical prediction of D. F. V. James and E. Wolf (1991, Phys. Lett. A, 157 6). The degree of spectral coherence determined is used for estimating the intensity distribution across a source. This new approach, being a simple spectral measurement technique, might find its application in astronomy, particularly for the study of intensity distribution across stars.Keywords
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