The research topic "Fiber Interferometer for Laser Metrology and Stabilisation" explores and develops new approaches based on fiber system for :

• Stabilisation of lasers
• Measurement with laser interferometry
• Metrology of lasers and photonic devices

Principal investigators :

•   Fabien Kéfélian (Dr), associate professor - Université de Nice
  

 Project : Spectral transfert of coherence 

•   Michel Lintz (Dr, HdR), research fellow - CNRS (also member of LISA team)

 Project : Long term laser stabilization (CNES funding)

Associates:

• Jean-Pierre Coulon, electronics engineer - CNRS
  

Temporary investigator :

• WE ARE LOOKING FOR A MASTER INTERN for 2021: Internship subject

NEWS :

• 23/04/2020 : Doctoral subject 2020 : Transfer of coherence between lasers with a fiber based interferometer
• 10/2018 : International Conference on Space Optics - ICSO 2018 : Temperature control of a PM ring fiber cavity for long-term laser frequency stabilization by D. Phung, J-P Coulon, Michel Lintz, T. Lévèque., Chania, France. pp.1118054,
• 24/09/2018 : Internship subject 2019 (master student or engineer's degree student in optics/photonics) :
  • Fiber based interferometer and laser frequency metrology
• 15/05/2018 : Arrival of Nasserdine Hamdani, trainee from INP Grenoble to work on the double stabilization of laser on a fiber ring cavity under the supervision of M. Lintz
• 01/02/2018 : Doctoral subject 2018 : Transfer of coherence between lasers with a fiber-based interferometer
• 03/01/2018 : Arrival of Dr Ha Phung, First-TF funded engineer, to work on long term interferometer stabilization by double locking for 6 months
• 15/11/17 : Internship subject 2018 (master student or engineer's degree student in optics/photonics) with possible doctoral thesis
  
  • Spectral transfer of laser coherence with a fiber based interferometer (Kéfélian)
  • Double stabilization of laser on a fiber ring cavity (Lintz)
• 29/06/17 : CLEO Europe/EQEC at Munich : Presentation of 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 et F. Kéfélian)
• 08/06/17 : Presentation by Fabien Kéfélian of 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 ) at the annual general assembly of the network of excellence First-TF (Network for Research, Innovation, Education, Services and Training in Time-Frequency, "LABEX")
• 25/04/17 : Arrival of Maxence Dupriez, trainee from université de Lille in master "light - matter", to work on long term laser stabilization by double locking on fiber based Fabry-perot interferometer under the supervision of M. Lintz
• 25/03/17 : Doctoral subject 2017:  Applications of the laser double lock to laser frequency stabilisation
• 23/03/17 : Experimental evidence of a fundamental noise floor at the tens of millihertz level in laser locking onto unbalanced fibre-based Michelson interferometer, par F. Audo, J.-P. Coulon et F. Kéfélian accepted at CLEO Europe/EQEC 2017
• 03/02/17 : Release of the paper Efficient diode laser line narrowing using dual, feed-forward + feed-back laser frequency control by M. Lintz, D.-H. Phung, J.-P. Coulon, B. Faure and T. Leveque, in Review of Scientific Instruments 88, 026102 (2017)
• 31/01/17 : Internship subject 2017 (master student or engineer's degree student in optics/photonics )
  • Double asservissement pour la stabilisation absolue d'un laser
  • Double asservissement de laser sur un interféromètre à fibre pour la comparaison de bruit de fréquence
• 07/10/16 : Presentation by Michel Lintz of "Dual", feed-forward + feed-back frequency control for efficient and convenient diode laser line narrowing at ICSO, International Conference on Space Optics (Biarritz)

Former projects :

• Spectral narrowing of diode laser (M. Lintz) (CNES funding)
• Laser Telemetry :
  
  • Projet T2M : Télémètre à deux modes (financement CNES)
  • Projet Iliade : Mesures à haute exactitude et haute résolution (financement ANR et CNES)

Former investigators and parteners:

• Nasserdine Hamdani, Phelma engineering school intern in 2018
• Ha Phung, contract engineer in 2013, doctoral candidate 09/09-06/13, contract engineer January-July 2018 (now permanent research engineer in OCA- Geoazur Lab)
• Maxence Dupriez, trainee 2nd year of master in physics option "light - matter" in université de Lille  - 2017
• Frédéric Audo, contract researcher in 2016 (now in Lannion, Institut FOTON)
• Yassine Barje, trainee (Master Limoges) 2016
• Lin Wei Yu, trainee (Master SupOptique) 2016
• Mathieu Daldosso, trainee (INSA Toulouse) 2014 (now engineer at NXP Semiconductors)
• Clément Courde, doctoral candidate 09/07-02/11 (now permanent research engineer in OCA- Geoazur Lab)
• Alain Brillet, senior research fellow - Medaille d'or du CNRS recepient (now retired)