We investigate mode-locking processes in lasers displaying a variable degree of structural randomness. By a spin-glass theoretic approach, we analyze the mean-field Hamiltonian and derive a phase diagram in terms of pumping rate and degree of disorder. Paramagnetic (noisy continuous wave emission), ferromagnetic (standard passive mode locking), and spin-glass phases with an exponentially large number of configurations are identified. The results are also relevant for other physical systems displaying a random Hamiltonian, such as Bose-condensed gases and nonlinear optics. © 2009 The American Physical Society.
Phase diagram and complexity of mode-locked lasers: From order to disorder / L., Leuzzi; Conti, Claudio; V., Folli; L., Angelani; Ruocco, Giancarlo. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 102:8(2009), p. 083901. [10.1103/physrevlett.102.083901]
Phase diagram and complexity of mode-locked lasers: From order to disorder
CONTI, CLAUDIO;RUOCCO, Giancarlo
2009
Abstract
We investigate mode-locking processes in lasers displaying a variable degree of structural randomness. By a spin-glass theoretic approach, we analyze the mean-field Hamiltonian and derive a phase diagram in terms of pumping rate and degree of disorder. Paramagnetic (noisy continuous wave emission), ferromagnetic (standard passive mode locking), and spin-glass phases with an exponentially large number of configurations are identified. The results are also relevant for other physical systems displaying a random Hamiltonian, such as Bose-condensed gases and nonlinear optics. © 2009 The American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
