Background:
The integration of quantum devices (clocks, sensors, computing) requires visible lasers with very high spectral purity that are compact and competitively priced. Today, visible laser solutions for quantum computing are costly and bulky.
The ‘QoQeliQo’ project brings together various industrial and academic players, including SILENTSYS and the Institut Foton, and aims to support the industrial development of quantum technologies by offering compact, coherent visible lasers at competitive prices. The proposed solution involves refining a frequency-tunable pump laser using stimulated Brillouin scattering (SBS). Linewidth narrowing of at least a factor of 100 will be demonstrated. This technology, already successfully implemented at infrared wavelengths, will be developed for the first time at an industrial TRL at visible wavelengths. SBS lasers offer several advantages, including optical powers that can reach several watts while maintaining high coherence. In addition, this technology can be applied at any wavelength as long as a monochromatic pump laser at the target wavelength and high-performance fibre components are available.
Two products will be developed as part of this project. The first is a visible Brillouin laser with very high spectral purity (sub-kHz) and agile frequency, making it possible to address spectral lines recognised as essential by the quantum industry. The second product is a linewidth narrowing module for visible lasers that can be applied to any laser technology and can therefore be hybridized with high-power lasers, whose spectral performance is insufficient. The aim is to provide the community with an additional technology for combining high power and narrow linewidth.
Objectives:
SILENTSYS and the Institut Foton are proposing a PhD position (CIFRE), with the aim of studying and developing Brillouin cavities and lasers based on various architectures in line with performance requirements based on market specifications.
Responsabilities:
The work will be divided into work packages:
– State of the art of Brillouin technologies in the visible range (Institut Foton)
– Definition of the technology architecture (Institut Foton – SILENTSYS)
— Architecture and design of Brillouin cavities
— Passive stabilisation and optoelectronic control
— Characterisation of Brillouin lasers
– Support in the manufacture of prototypes and tests (SILENTSYS)
— Cavity manufacture
— Assembly of the complete system and packaging
– Selection and configuration of Brillouin lasers
Profile requirements:
Your profile:
– Holder of a MASTER’S degree in photonics, physics or equivalent
– Knowledge in electronics would be highly appreciated
Technical skills and know-how:
– Good knowledge of optoelectronics, laser physics and non-linear optics
– Laser physics modelling and simulation with Matlab or equivalent
– Experience in laser locking and stabilisation
– Knowledge of vibro-acoustic isolation would be an advantage
– English required: bilingual (TOIEC > 945 – level C1)
Soft skills:
– Autonomous and able to take the initiative
– Curious, you are attracted by new technologies and enjoy learning
– Rigorous, you know how to meet deadlines and follow up projects
– A plus in your profile: you enjoy working in a multidisciplinary team, as you will be required to work with multiple teams in the laboratory and the company
Salary Range:
Based on profile