Prof. Dr. Philippe GRELU​

Professor of Physics and Optoelectronics at University de Bourgogne, Dijon, France

Philippe Grelu, Professor of Physics and Optoelectronics at University de Bourgogne (Dijon, France), and research theme leader in the "Solitons, Lasers and Optical Communications" group, is visiting the Faculty of Physics and Astronomy in November 2011. During his stay he will give one lecture on November 14th.

Prof. Grelu graduated from Ecole Centrale de Paris in 1989, and obtained a PhD in quantum optics at Paris XI Orsay University, in 1996. He joined the University de Bourgogne 1997 as professor assistant, and became full professor in 2005. Prof. Grelu initiated several areas of research in Dijon, namely on mode-locked fiber lasers, dissipative solitons, soliton molecules, and light bullets. He also set off the teaching of Optoelectronics as a comprehensive undergraduate course, at the University de Bourgogne.

Lecture: Dissipative solitons for mode-locked lasers

Time: November 14, 2011, 14:00
Place: Seminar room 2, Helmholtzweg 5, 07743 Jena

For the past few years, the use of the dissipative soliton terminology has been rapidly expanding in many fields of nonlinear optics. In contrast to conventional solitons that manifest in conservative systems, such as in passive nonlinear transmission lines, dissipative solitons are generally robust, fixed-shaped pulse solutions that provide an interesting framework for numerous applications such as mode-locked lasers and optical regeneration. I shall present the concept and how it can be applied to explain or reinterpret a variety of pulse dynamics observed experimentally in mode-locked fiber lasers. It will be illustrated with the situation of sets of interacting solitons inside the laser cavity, as well as with the dissipative soliton resonance phenomenon that provides an alternative theoretical framework for the quest of high-energy pulses produced from mode-locked fiber laser oscillators.