Friday, March 29, 2013

1303.7138 (Armand Lebreton et al.)

Unequivocal differentiation of coherent and chaotic light through
interferometric photon correlation measurements
   [PDF]

Armand Lebreton, Izo Abram, Rémy Braive, Isabelle Sagnes, Isabelle Robert-Philip, Alexios Beveratos
We present a novel experimental technique that can differentiate unequivocally between chaotic light and coherent light with amplitude fluctuations, and thus permits to characterize unambiguously the output of a laser. This technique consists of measuring the second-order intensity cross-correlation at the outputs of an unbalanced Michelson interferometer. It is applied to a chaotic light source and to the output of a semiconductor nanolaser whose "standard" intensity correlation function above-threshold displays values compatible with a mixture of coherent and chaotic light. Our experimental results demonstrate that the output of such lasers is not partially chaotic but is indeed a coherent state with amplitude fluctuations.
View original: http://arxiv.org/abs/1303.7138

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