Frequency-locked chaotic opto-RF oscillator

Aurélien Thorette (1) , Marco Romanelli (1) , Marc Brunel (1) , Marc Vallet (1)

1 IPR - Institut de Physique de Rennes

A driven opto-RF oscillator, consisting of a dual-frequency laser (DFL) submitted to frequency-shifted feedback, is experimentally and numerically studied in a chaotic regime. Precise control of the reinjection strength and detuning permits isolation of a parameter region of bounded-phase chaos, where the opto-RF oscillator is frequency-locked to the master oscillator, in spite of chaotic phase and intensity oscillations. Robust experimental evidence of this synchronization regime is found, and phase noise spectra allow us to compare phase-locking and bounded-phase chaos regimes. In particular, it is found that the long-term phase stability of the master oscillator is well transferred to the opto-RF oscillator, even in the chaotic regime.

Mots clés: solid-state; injection-locked; Lasers; Instabilities and chaos

Domaines: Optique [physics.optics]

Aurélien Thorette, Marco Romanelli, Marc Brunel, Marc Vallet. Frequency-locked chaotic opto-RF oscillator. Optics Letters, 2016, 41 (12), pp.2839-2842. ⟨10.1364/OL.41.002839⟩. ⟨hal-01333412⟩