Brillouin Gain Characterization by Cavity Ringdown Spectroscopy - Université de Rennes Accéder directement au contenu
Communication Dans Un Congrès Année : 2019

Brillouin Gain Characterization by Cavity Ringdown Spectroscopy

Résumé

Nowadays, narrow linewidth lasers are unavoidable tools for fundamental and applied physics. One promising approach to generate coherent laser emission is based on stimulated Brillouin scattering (SBS) optical nonlinearity. Implementing SBS in an optical cavity gives rise to coherent emission with impressive performances in terms of noise and linewidth. Cascading the SBS process can even, under given conditions, improves the coherent emission specifications. To achieve such performances it is crucial to determine the Brillouin gain coefficient. Usual pump-probe methods are carried out in single pass waveguides. The probe intensity is proportional to e gBP in L eff / A eff where P in is the incident pump power, A eff the effective mode area and L eff the usual effective interaction length. To observe significant probe amplification one needs either long waveguides or strong pump power to reach the SBS threshold. We propose a method, based on the cavity ringdown spectroscopy, to directly characterize the Brillouin gain coefficient inside a resonator. This configuration allows to extract Brillouin parameters from the light recirculation with both a reduced waveguide length and input pump power when compared to usual methods.
CLEO2019_CRDM.pdf (465.31 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02267980 , version 1 (20-08-2019)

Identifiants

Citer

Ananthu Sebastian, Stephane Trebaol, Pascal Besnard. Brillouin Gain Characterization by Cavity Ringdown Spectroscopy. Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference 2019 (CLEO-Europe/EQEC 2019), Jun 2019, Munich, Germany. ⟨10.1109/CLEOE-EQEC.2019.8871652⟩. ⟨hal-02267980⟩
23 Consultations
77 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More