Détails

Mis à jour : 14 mai 2024

Spectral Transfer of Coherence with fiber-based interferometer 

Principal Investigator : Dr Fabien Kéfélian

Fundings : Provence-Alpes-Côte d'Azur region, First-TF network of excellence, Observatoire de la Côte d'Azur & Université Côte d'Azur

 

Summary :The goal of this project is to investigate experimentaly the potential of fiber based large arm imbalence interferometer to transfer the coherence of a stable laser to a laser with a wavelength difference of several nanometers.

Current investigators : Dr. Fabien Kéfélian, Debanjan Show UniCA doctoral candidate 2022-2025

Former investigator : Dr. Stéphanie Grabielle FIRST-TF funded post-doctoral research fellow in 2023, Dr Frédéric Audo, FIRST-TF funded post-doctoral research fellow in 2016, Lin-Wei Yu, intern from SupOptique - Institut d'optique graduate school in summer 2016 

 

Publications and communications :

• Out-of-Loop Frequency Noise Reduction of a Pound-Drever-Hall Lock to an Optical Fiber Delay Line, Stéphanie Grabielle, Debanjan Show, Frédéric Audo, Jean-Pierre Coulon, Fabien Kéfélian, EFTF 2024 27/06/2024 Neuchatel paper 2149
• Noise of Spectral Transfer of Laser Frequency by Locking to the Direct Difference of Fiber Interferometer Signals, Stéphanie Grabielle, Debanjan Show, Jean-Pierre Coulon, Fabien Kéfélian, EFTF 2024 27/06/2024 Neuchatel paper 2173
• Numerical Investigation of the Effect of Optical Discriminator Nonlinearity in Laser Frequency Locking on Fiber Delay Line, Debanjan Show, Stéphanie Grabielle, Frédéric Audo, Fabien Kéfélian, EFTF 2024 27/06/2024 Neuchatel paper 2172
• Spectral transfer of coherence using a fiber interferomter : noise floor and servo techniques. S. Grabielle, D. Show, F. Audo, J.-P. Coulon and F. Kéfélian; annual general assembly of the network of excellence First-TF (Network for Research, Innovation, Education, Services and Training in Time-Frequency, "LABEX") 09/11/24
• Experimental evidence of a fundamental noise floor at the tens of millihertz level in laser locking onto unbalanced fibre-based Michelson interferometer, , F. Audo, J.-P. Coulon and F. Kéfélian, CLEO Europe/EQEC 2017
• Experimental evidence of a frequency noise floor at 0.1 Hz/Hz^0.5 in laser locking onto Michelson fiber based interferometer, F. Audo, J.-P. Coulon and F. Kéfélian, annual general assembly of the network of excellence First-TF (Network for Research, Innovation, Education, Services and Training in Time-Frequency, "LABEX") 08/06/17

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