The higher-order coherence functions of optical fields involving phase fluctuations have not yet been studied extensively. We discuss here an experiment which can in principle yield the fourth-order coherence function. This experiment is a study of the correlation function of the irradiance fluctuations obtained in some interference experiments. Two kinds of delay are then used: optical delays in the interferometer and electrical delays with suitable variations in the correlator.
The results of the experiment are calculated theoretically with a particular statistical model of laser light. The possibility of using a spectrum analyzer instead of a correlator is discussed.
© 1968 Optical Society of AmericaFull Article | PDF Article
OSA Recommended Articles
Mark J. Beran and Alan M. Whitman
J. Opt. Soc. Am. 64(12) 1636-1640 (1974)
M. J. Beran and T. L. Ho
J. Opt. Soc. Am. 59(9) 1134-1138 (1969)
Dmitry Levandovsky, Michael Vasilyev, and Prem Kumar
Opt. Lett. 24(2) 89-91 (1999)