High spectral purity laser characterization with a self-heterodyne frequency discriminator

Olivier Llopis (1) , Zeina Abdallah (1) , Vincent Auroux (1) , Arnaud Fernandez (1)

1 LAAS-MOST - Équipe Microondes et Opto-microondes pour Systèmes de Télécommunications

The performance of a delay line discriminator dedicated to the characterization of high spectral purity lasers is investigated. The system noise floor is obtained using a symmetrical delay. The vibrations are one of the main problems with this approach at the low frequency offsets. However, the system is able to characterize commercially available narrow linewidth lasers, such as external cavity lasers and fiber lasers.

Mots clés: metrology; frequency discriminator; frequency noise; phase noise; laser

Domaines: Sciences de l'ingénieur [physics]; Physique [physics]

Olivier Llopis, Zeina Abdallah, Vincent Auroux, Arnaud Fernandez. High spectral purity laser characterization with a self-heterodyne frequency discriminator. 2015 Joint conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Apr 2015, Denver, United States. ⟨hal-01141233⟩