In-phase and antiphase self-intensity regulated dual-frequency laser using two-photon absorption

Abdelkrim El Amili (1) , Kevin Audo (1) , Mehdi Alouini (1)

1 IPR - Institut de Physique de Rennes

A 25 dB reduction of resonant intensity noise spectra is experimentally demonstrated for both the antiphase and in-phase relaxation oscillations of a dual-frequency solid-state laser operating at telecommunication wavelengths. Experimental results demonstrate that incorporation of an intracavity two-photon absorber that acts as a buffer reservoir reduces efficiently the in-phase noise contribution, while it is somewhat ineffective in lowering the antiphase noise contributions. A slight spatial separation of the two modes in the nonlinear two-photon absorber reduces the antiphase resonant intensity noise component. These experimental results provide a new approach in the design of ultra-low noise dual-frequency solid-state lasers. (C) 2016 Optical Society of America

Keywords: yb-glass-laser; microchip laser; ring laser; noise; generation; reduction

Domains: Physics [physics]

Abdelkrim El Amili, Kevin Audo, Mehdi Alouini. In-phase and antiphase self-intensity regulated dual-frequency laser using two-photon absorption. Optics Letters, 2016, 41 (10), pp.2326--2329. ⟨10.1364/OL.41.002326⟩. ⟨hal-01343404⟩