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1 LIPhy-OPTIMA LIPhy - Laboratoire Interdisciplinaire de Physique Saint Martin d’Hères 2 LIPhy-CLOE LIPhy - Laboratoire Interdisciplinaire de Physique Saint Martin d’Hères

Abstract : We evidence experimentally the statistical properties of frequency shifted feedback FSF lasers through measurements of the homodyne beat signal and interferometric autocorrelation of a dye FSF laser at the output of a Michelson interferometer. The FSF laser is found to show thermal fluctuations and photon bunching. Moreover whereas the degree of first-order coherence vanishes beyond the coherence length of the FSF source, the degree of second-order coherence exhibits periodic revivals far beyond the coherence length, with a period equal to the cavity roundtrip time. Our observations are in good agreement with the theoretical treatment of Yatsenko et al. L.P. Yatsenko, B.W. Shore, K. Bergmann, Opt. Comm. 236 2004 183 and validate the description of the output field of a FSF laser by a broadband cyclostationary thermal field.

Keywords : Photon statistics and coherence theory Dye lasers Dynamical laser instabilities noisy laser behavior





Author: H. Guillet de Chatellus - J. P. Pique -

Source: https://hal.archives-ouvertes.fr/



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