Effects Of Correlation Between Two Fluctuating Sources On The Spectrum Of The Emitted Light

Emil Wolf

doi:10.1117/12.967318

1 January 1987 Effects Of Correlation Between Two Fluctuating Sources On The Spectrum Of The Emitted Light

Emil Wolf

Proceedings Volume 0813, Optics and the Information Age; (1987) https://doi.org/10.1117/12.967318
Event: 14th Congress of the International Commission for Optics, 1987, Quebec, Canada

Abstract

It has recently been demonstrated both theoretically^1-3 and experimentally4 that contrary to general belief, the spectrum of light emitted by a steady-state source depends, in general, not only on the source spectrum but also on the degree of correlation between the source fluctuations. When the source spectrum consists of a single line centered at frequency wo , the source correlation may cause the spectrum of the emitted light to be a line centered on a lower frequency < wo or at a higher frequency w'o > wA, depending on the particular form of the degree of correla?ion. Thus source correlations provide a new physical mechanism for redshifts or blueshifts of spectral lines. This newly discovered phenomenon is obviously-of particular interest for astronomy, where line shifts observed in the spectra of radiation from stellar objects have up to now always been assumed to be caused either by the motion of the stellar object relative to the observer (the Doppler effect) or as being due to gravitation. Examples of redshifted lines due to source correlations are shown in Fig. 1.

Citation Download Citation

Emil Wolf "Effects Of Correlation Between Two Fluctuating Sources On The Spectrum Of The Emitted Light", Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); https://doi.org/10.1117/12.967318

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