Forthcoming Events

30.08.2020 - 04.09.2020, Online (Europe)

News

New scientific highlights- from MUST researchers at PSI
Promotion to full professorcongratulations to Steve Johnson!
The Laser at 60: Ursula KellerOPN interviewed OSA Fellows
Former EPFL PhD student Edoardo Baldini wins the 2020 ACS PHYS Division Young Investigator Awards
New scientific highlights- by MUST PIs Banerji, Chergui and Wolf
Prix de l'innovation AGROVINA 2020- for Agrolase: detecting spores of pathogens in real time
Ruth Signorell receives the Humboldt Prize- awarded in recognition of outstanding achievements in research and teaching
New scientific highlights- by MUST PIs Keller, Chergui, Richardson / Vanicek, Wörner, Castiglioni / Osterwalder / Hengsberger / van Bokhoven
Ursula Keller wins the SPIE 2020 Gold Medal- awarded in recognition of outstanding engineering or scientific accomplishments
Nobel Prize winner Gerard Mourou - Physics Colloquium 11.12.19: Passion Extreme Light

Jean-Pierre Wolf

February 2012

Jean‐Pierre Wolf was awarded a prestigious ERC (European Research Council) Advanced Grant for his work on high field‐matter interactions and in particular laser filamentation. Filaments arise from the non‐linear propagation of high‐power lasers through transparent media. They consist of self‐sustained light strings of typical 100 μm diameter and hundreds of meters length in air, bear very high intensities (1013‐1014 W/cm2) and are electrically conductive through molecular ionization. The filamentation process in air was considered until recently as resulting from the dynamic balance between the optical Kerr effect and defocusing by the self‐generated plasma. J.P. Wolf and his group recently discovered that filaments can be governed by negative higher‐order Kerr effect (HOKE), which opened both basic physical questions about the stabilization mechanism and new opportunities to optimize the envisioned applications to lightning triggering and cloud condensation.The project, called “FilAtmo”, aims at coherently controlling the electron trajectories and tailoring the HOKE inversion, and consequently at controlling the filamentation process itself. Optimal pulse shapes will then be sought by adaptive (closed loop) techniques to maximize the plasma density and lifetime in filaments for lightning control applications. Similar coherent control approaches will be performed for optimizing the complex photochemistry that leads to water condensation in the atmosphere.

Transition from Plasma‐Driven to Kerr‐Driven Laser Filamentation, Phys. Rev. Lett. 106, 243902 (2011)
Laser‐induced Water Condensation in Air, Nature Photonics 4, 451 ‐ 456 (2010) Field Measurements Suggest Mechanism of Laser‐Assisted Water Condensation, Nature Comm. 2, 456 (2011)

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