Phys. Rev. Lett. 89, 053901 (2002) [4 pages]Instability of Single-Frequency Operation in Semilinear Photorefractive Coherent OscillatorsReceived 12 February 2002; published 15 July 2002 The transition of the single-frequency oscillation of a semilinear photorefractive coherent oscillator for sufficiently large coupling strengths into two-frequency oscillation is predicted and is observed experimentally. The critical value of the coupling strength at which the bifurcation occurs is a function of pump intensity ratio and cavity losses. The supercritical bifurcation in the oscillation spectrum is analogous to the second-order phase transition. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.053901
DOI:
10.1103/PhysRevLett.89.053901
PACS:
42.65.Hw, 05.45.–a, 42.65.Pc, 42.65.Sf
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