Université Biophotonics Group

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Last update: April 21th, 2017


Welcome to the GAP Biophotonics group website

Prof. Jean-Pierre WOLF
News:

April 2017:

Upcoming Seminar

Thu 27th April 2017 at 14h00 Room 03

Maison de Pinchat (Chemin de Pinchat, 22 - Carouge GE)

«Can a table-top laser match (beat?) the 10-18 m resolution of LIGO? Yes it can! By applying Intracavity Phase Interferometry enhanced by resonant dispersion with mode-locked lasers»

Prof. Jean-Claude Diels

Department of Physics and Astronomy
University of New Mexico
Albuquerque, USA link

Abstract link

Upcoming Seminar

Thu 5th May 2017 at 11h00 Room 03

Maison de Pinchat (Chemin de Pinchat, 22 - Carouge GE)

«SwissFEL: The Swiss X-ray Free Electron Laser»

Dr. Chris Milne

SwissFEL, Paul Scherrer Institute
Villigen-PSI, Switzerland
link

Abstract link
Laser triggered breakdown picture

LLR project “Laser Lighting Rod”

The group of Prof. Wolf is taking part into the Consortium of the project “Laser Lighting Rod” (Project ID: 737033) which is financed by the fund FET-Open of the european research funding program Horizon 2020 (Fund: H2020-EU.1.2.1. - FET Open ). Ever since the invention of the lightning rod by Benjamin Franklin in the 18th century, mankind has become more and more invested in understanding and tame this natural phenomenon. Along with the rapid evolution of the laser technologies, the idea to develop new type of lighting protection based on high-power fs lasers laser has emerged in recent years. The goal of the present project is to investigate and develop a new type of lightning protection based on the use of upward lightning discharges initiated through a high repetition rate multi terawatt laser. The feasibility of the novel technique and the project’s prospect of success are based on recent research providing new insights into the mechanism responsible for the guiding of electrical discharges by laser filaments, on cutting-edge high power laser technology and on the availability of the uniquely suitable Säntis lightning measurement station in Northeastern Switzerland.

LLR project at CORDIS link

LLR project website

New article in Science

CF4 moleclue

«An ultrafast X-ray source in laboratory format»

Researchers at ETH Zurich and the University of Geneva have succeeded for the first time in using a laboratory X-ray source to demonstrate how two highly fluorinated molecules change within a few quadrillionths of a second, or femtoseconds.

In nature, some processes occur so quickly that even the blink of an eye is very slow in comparison. Many basic physical, chemical and biological reactions take place on the ultrafast time scale of a few femtoseconds (10-15 s) or even attoseconds (10-18 s). In molecules, elementary particles, such as electrons or photons, move in a mere 100 attoseconds (10-16 s). When electrons in a molecule jump from one atom to another, chemical bonds dissolve and new ones arise within a fraction of a femtosecond. The ability to track processes of this kind on the atomic scale in real time is one of the key reasons for development of major new research facilities such as the SwissFEL free electron laser. Now, researchers from the ETH Zurich and the University of Geneva have found a way to study ultrafast processes of this kind in the laboratory, using a soft X-ray source.

Reference: Pertot, Y., C. Schmidt, M. Matthews, A. Chauvet, M. Huppert, V. Svoboda, A. von Conta, A. Tehlar, D. Baykusheva, J.-P. Wolf and H. J. Wörner (2017). Time-resolved x-ray absorption spectroscopy with a water window high-harmonic source. Science. [DOI: 10.1126/science.aah6114] Pertot-2017 (1.2 MB).


Sinergia logo

Quantum Vision Project Accepted

GAP Biophotonics and five groups, all from the University of Geneva, have been awarded a Sinergia multidisciplinary Swiss national project. The aim of this ambitious project is to investigate whether our senses, and especially our vision, are sensitive to purely quantum phenomena, like quantum interferences and photon entanglement.

https://www.unige.ch/gap/quantumvision/

Sinergia link

New Open Post-Doc position

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