Cooperative Parametric Instability of Natural Modes and Coherent Mechanism of Self-Mode-Locking in a Ring Class-B Laser |
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| Authors: | Kocharovsky V. V. Kocharovsky Vl. V. |
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| Affiliation: | (1) Institute of Applied Physics, Russian Academy of Science, Nizhny Novgorod, Russia;(2) Department of Physics and Institute for Quantum Studies, Texas A&M University, College Station, Texas, USA |
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| Abstract: | ![]()
Based on recent experimental observations and numerical simulations [1-4], we develop an analytical theory of spontaneous low-threshold mode-locking in a long homogeneously-broadened fiber laser with slow relaxation of inversion. We show that the phenomenon originates from the self-consistent parametric resonance and beat-frequency-locking of paired  hot modes taking place due to coherent nonlinear effects in the system of active two-level centers. An important role of the Risken-Nummedal-Graham-Haken [5-7] multimode instability is discussed. |
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