General phase-diagram of multimodal ordered and disordered lasers in closed and open cavities

Fabrizio Antenucci; Claudio Conti; Andrea Crisanti; Luca Leuzzi

doi:10.1103/physrevlett.114.043901

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arXiv · 1406.7826

General phase-diagram of multimodal ordered and disordered lasers in closed and open cavities

Fabrizio Antenucci·Claudio Conti·Andrea Crisanti·Luca Leuzzi

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Abstract

We present a unified approach to the theory of multimodal laser cavities including a variable amount of structural disorder. A general mean-field theory is studied for waves in media with variable non-linearity and randomness. Phase diagrams are reported in terms of optical power, degree of disorder and degree of non-linearity, tuning between closed and open cavity scenario's. In the thermodynamic limit of infinitely many modes the theory predicts four distinct regimes: a continuous wave behavior for low power, a standard mode-locking laser regime for high power and weak disorder, a random laser for high pumped power and large disorder and an intermediate regime of phase locking occurring in presence of disorder below the lasing threshold.

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Fabrizio Antenucci, Claudio Conti, Andrea Crisanti, Luca Leuzzi. 2014-06-30. General phase-diagram of multimodal ordered and disordered lasers in closed and open cavities. https://doi.org/10.1103/physrevlett.114.043901

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