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Selfsynchronization and dissipation-induced threshold in collective atomic recoil lasing

C. von Cube·S. Slama·D. Kruse·C. Zimmermann·Ph. W. Courteille·G. R. M. Robb·N. Piovella·R. Bonifacio
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Abstract

Networks of globally coupled oscillators exhibit phase transitions from incoherent to coherent states. Atoms interacting with the counterpropagating modes of a unidirectionally pumped high-finesse ring cavity form such a globally coupled network. The coupling mechanism is provided by collective atomic recoil lasing (CARL), i.e. cooperative Bragg scattering of laser light at an atomic density grating, which is self-induced by the laser light. Under the rule of an additional friction force, the atomic ensemble is expected to undergo a phase transition to a state of synchronized atomic motion. We present the experimental investigation of this phase transition by studying the threshold behavior of the CARL process.

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C. von Cube, S. Slama, D. Kruse, C. Zimmermann, Ph. W. Courteille, G. R. M. Robb, N. Piovella, R. Bonifacio. 2004-02-02. Selfsynchronization and dissipation-induced threshold in collective atomic recoil lasing. https://doi.org/10.1103/physrevlett.93.083601

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