Jussi-Pekka Penttinen
Organisation: Vexlum Role: Co-founder, CEO and CTO Based in: Tampere, Finland
Vexlum is a spin-off from the Tampere University of Technology’s Optoelectronics Research Centre (ORC), which aims to bring VECSEL technology to high-impact applications that can deliver unique benefits in performance, cost, and usability. In particular, the company focuses on developing optoelectronics materials enabling VECSELs at new wavelengths with scalable manufacturing processes. Prior to founding Vexlum, Penttinen
worked as a project researcher at the ORC and currently remains at the university as a doctoral researcher. In the latest research
Simonette Pierrot
Organisation: Lumentum Switzerland Role: Principal Laser Engineer
Although a lot of outstanding results have been demonstrated in terms of energy and power scaling of ultrafast lasers in the past 20 years, the technology has now reached a certain level of maturity, believes Simonette Pierrot, principal laser engineer at Lumentum. ‘In my opinion, the focus in the pulsed laser field will now be less about opening the way to new performance such as shorter pulse or higher energy and more about stabilising it and making it manufacturable in high volume,’ she said. Moving to mass production is a challenge in any industry and Pierrot predicts the
Based in: Schlieren/Zurich, Switzerland Education: PhD in Laser Physics
industrial laser field will not be an exception. ‘Laser system architectures have to be simplified while maintaining their cutting-edge performance, to ensure cost-effectiveness, robustness and manufacturability,’ she said. ‘Introducing automation and artificial
intelligence in the production line is an interesting path forward to help achieving the highest standards of reproducibility and quality.’ You can find Pierrot online at
linkedin.com/ in/simonette-pierrot/. She plans to attend Photonics West in 2023.
Education: MSc in Advanced Engineering Physics (Optoelectronics), Tampere University of Technology
published in October 2022 in Optics Express, Penttinen helped show that intra-cavity frequency-doubled VECSELs can perform precision spectroscopy at and below the MHz level, demonstrating the light sources as a promising tool for quantum technologies. In early 2022, Vexlum joined QuTi, a
three-year project coordinated by VTT Technical Research Centre of Finland that aims to develop new components, algorithms, manufacturing and testing solutions to meet the needs of quantum technology.
Congratulations, Simonette!
“Dr. Simonette Pierrot joined Lumentum Switzerland in 2013 as an Advanced Researcher. Since then, she has worked on new concepts for laser pulse generation and amplification, contributing substantially to our ultrafast laser portfolio. Simonette holds an Optical Engineering degree from Institut d’Optique Graduate School and a PhD in Laser Physics from Aix-Marseille University. Today, Simonette leads our pulsed laser technology roadmap and technology development group, enabling us to be at the forefront of high-power pulsed lasers. Her great dedication to make advanced technologies successful
in the next-generation products will continue to support Lumentum’s growth and success. Her work enthusiasm is contagious and a motivation booster for the entire team”
Dr Isabella Jung Ewert, Director Engineering & Site Manager
48 Photonics100 2023
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