Post doctoral position in optical instrumentation

Post-doctoral Position
Advanced optical characterizations and metrological instrumentation for coherent sources in the visible and infrared for sensors and telecoms applications
 
The FOTON Laboratory is offering a 12-month postdoctoral position in the area of advanced optical characterizations and metrological instrumentation for tunable coherent sources for sensors and telecom applications.
 
Starting date: between 1 September 2017 and 1 March 2018
Research team: Photonic Systems (laser physics & applications group), at ENSSAT-Lannion.
Project description
The objectives concern the development of single-frequency laser sources and the associated optical instrumentations for coherency measurements and laser stabilization. The purpose is to gain better understanding of the lasers properties, prospects and limitations.
The successful candidate will be involved in collaborative projects (Solbo and DeepBlue) with industrial partners (IDIL, Keopsys, Thales R & T, Photonics Bretagne, Oxxius, Ifremer and Horiba) and academic laboratories (CNRS ISCR, CNRS Foton, CNRS LPL and EPFL (Switzerland)). Those projects aim to achieve highly coherent sources, possibly leading to significant advances from a scientific and industrial point of view in areas including instrumentation, sensors and telecoms.
Three types of coherent lasers are investigated: Brillouin fiber lasers and semiconductor frequency comb lasers in the infrared band (1.5 µm) and external cavity diode lasers in the visible band (405 nm).
Foton in collaboration with Rince (Dublin City University) has recently demonstrated the noise reduction for the lines of a quantum-dash mode-locked Laser, with 14 sub-kHz lines, showing 63 dB reduction for the linewidth of the central line.
Within the project Solbo, a Brillouin fiber laser with 40 dB frequency noise reduction have been obtained corresponding to an intrinsic linewidth of 2.5 Hz and an integrated linewidth of 1.5 kHz.
Within the project DeepBlue, the objectives are to investigate optoelectronic and all optical techniques to reduce and stabilized monofrequency diode lasers at 405 nm.
 
The successful candidate will directly interact with three PhD students working on the above mentioned projects. She/He will supervise the improvement of noise measurement sensitivity and develop laser stabilization techniques. This instrumentation will be applied to enhance the coherency of the visible and infrared sources.
 
Further information may be obtained from:
Prof. Pascal Besnard (pascal.besnard@enssat.fr), phone: +33 2 96 46 91 41.
Assist. Prof. Stéphane Trebaol (stephane.trebaol@enssat.fr), phone: +33 2 96 46 90 07.
Unité CNRS Foton, ENSSAT, 6 rue de Kerampont, CS 80518, 22305 Lannion Cedex

Your application should include:

• Cover letter
• Detailed CV
• Copy of PhD degree
• List of publications
• Contact details of two references

 
All qualified candidates are invited to apply.

About the FOTON Laboratory (CNRS, UMR 6082)
The FOTON Laboratory is a research unit of the French National Centre for Scientific Research (CNRS) associated to University of Rennes 1 and the National Institute for Applied Sciences (INSA) of Rennes. FOTON is composed of three research teams: the laser Dynamics, micrOwave photonics, Polarimetry, terahertz, imaging team and the Optoelectronics, Heteroepitaxy and Materials team, located in Rennes, and the Photonic Systems team located in Lannion. The two cities are located approximatively 170 km apart, in the province of Brittany, Western France. Photonic Systems team is involved in research on laser physics, and in particular on the experimental demonstration of new functionalities that could potentially contribute to overcoming the challenges related to sensors sensitivity, telecom capacity. The group has an established reputation in the area of laser physics.
The successful candidate will carry out research in Lannion.
More information about FOTON can be found at: http://foton.cnrs.fr.

Candidacy conditions requests that candidates should have an international research experience and obtained the PhD diploma after the 1/9/2014.