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Portal > Offres > Offre UMR6174-VALFAU-006 - Post-Doctorant en optique ultra-rapide et structuration par laser femtoseconde (H/F)

PostDoc Position Ultrafast Optics and ultrafast laser materials processing (M/W)

This offer is available in the following languages:
Français - Anglais

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General information

Reference : UMR6174-VALFAU-006
Workplace : BESANCON
Date of publication : Friday, November 08, 2019
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 15 February 2020
Proportion of work : Full time
Remuneration : depending on experience
Desired level of education : 5-year university degree
Experience required : Indifferent


The FEMTO-ST Institute is looking for a PostDoc highly motivated to work within the European Project kW-flexiburst. The project aims at developing a breakthrough laser technology to help overcome this critical barrier, which could enable the next generation of manufacturing in a range of industrial sectors.


The next generation of laser technologies for material processing machines need to deliver higher precision, throughput and, most important, an extreme flexibility. Current ultrafast laser technology has demonstrated applicability for enabling high precision micromachining, but current throughput is not efficient enough for widescale industrial manufacturing and the parameters of existing lasers are not flexible enough to consistently work in the optimal conditions necessary to minimize heat-affected zone while using all of the available laser power. The kW-flexiburst project aims to develop a breakthrough laser technology to help overcome this critical barrier, which could enable the next generation of manufacturing in a range of industrial sectors. The project includes seven members from all around the European Union.

kW-flexiburst, which stands for Ultrashort pulsed kW-class laser with unprecedented flexible GHz burst operation for high precision high-throughput industrial manufacturing, started on 1st January 2019 and will run until 31st December 2022.

To achieve the project goals, kW-flexiburst will develop a high-power ultra-short pulse laser capable of generating bursts that can be arbitrarily adjusted in terms of burst repetition rate, intra-burst repetition rate, number of pulses per burst and relative intensities in the burst while maintaining 1 kW average power. This will be enabled by a radically new concept of seed oscillator, which offers the opportunity to work at GHz repetition rates. The flexible laser performance will be demonstrated in relevant industrial applications, which require high throughput/ high quality laser processing methods and therefore will benefit significantly from the high mean power and the tunable pulses provided by the kW-flexiburst system. The selected applications span a wide range of industrial fields from micro-structuring of metals, ceramics and other dielectrics, drilling of hard substrates and cutting of transparent materials. Each of them carries the potential for significant or even disruptive improvements of the related industrial production process by employing the kW-flexiburst laser technology in combination with the beam delivery concepts and process methods proposed by the project.

The scientific role of our team, at the FEMTO-ST Institute of CNRS, is to develop new applications in micro and nano-structuring using this unconventional laser architecture and to investigate laser-matter interaction in the new regimes offered by this new architecture.


- participation to the experimental setup design
- construction of the setup
- aquisition and analysis of the experimental data
- internal reporting and draft publication writing
- participation to consortium meetings and teleconferences


Skilled experimentalists with knowledge of optics, lasers, amplified femtosecond lasers and nonlinear optics, laser-plasma interaction, pump-probe techniques or experience in laser damage

An excellent level of English (both oral and written) is mandatory.

Work Context

Research will be carried out within the CNRS FEMTO-ST Institute in a newly commissioned scientific building providing access to a wide range of basic science and technological facilities including a suite of dedicated photonics laboratories, 1300 m2 of clean rooms, and parallel computing center.

Besancon is in the East of France, 2 hours 15 minutes from Paris by train and near the foothills of the Jura mountains, close to excellent hiking and mountain bike trails, ski stations and rock-climbing formations. It is consistently rated as having one of the highest qualities of life in France and has a vibrant university atmosphere.

Additional Information

accuracy : 1 year renewable twice, ie up to 3 years in total.

For further information:

kW-flexiburst website :

kW-flexiburst explainer video :

To apply for this position, please contact
François Courvoisier

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