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Article Dans Une Revue IEEE Photonics Technology Letters Année : 2019

Brillouin Assisted Optoelectronic Self-Narrowing of Laser Linewidth

Résumé

We propose and demonstrate the possible self-narrowing of a laser line using optoelectronic and Brillouin approaches. Part of the laser is used to feed a long fiber Brillouin resonator whose Stokes wave is phase locked to the laser. The phase-locked loop which first forbids the multimode operation of the Brillouin resonator enables in a second time a dramatic reduction in the optical phase noise of the laser itself. In the case of a continuous Er,Yb:glass laser, a reduction by more than 90 dB at 100 Hz of the carrier is observed. This yields an optical linewidth reduction to 2 Hz. The method being independent of the laser wavelength, it can be implemented to almost any laser.
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Dates et versions

hal-02383051 , version 1 (27-11-2019)

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Gwennaël Danion, Marc Vallet, Ludovic Frein, Pascal Szriftgiser, Mehdi Alouini. Brillouin Assisted Optoelectronic Self-Narrowing of Laser Linewidth. IEEE Photonics Technology Letters, 2019, 31 (12), pp.975-978. ⟨10.1109/LPT.2019.2912874⟩. ⟨hal-02383051⟩
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