Euronews video about LLR project

Euronews journalists met with the LLR team to prepare a video about the project under the FUTURIS program, “the latest news about the leading scientific and technological research projects in Europe”

The video article has been published on September 16th, 2019 on the Euronews website.

HV discharges triggered by dual- and triple-frequency laser filaments

T. Produit, P. Walch, G; Schimmel, B. Mahieu, C. Herkommer, R. Jung, T. Metzger, K. Michel, Y.-B. André, A. Mysyrowicz, A. Houard, J. Kasparian, J.-P. Wolf, Optics Express, 11339 (2019) link

Abstract: We study the use of frequency upconversion schemes of near-IR picosecond laserpulses and compare their ability to guide and trigger electric discharges through filamentationin air. Upconversion, such as Second Harmonic Generation, is favorable for triggering electricdischarges for given amount of available laser energy, even taking into account the losses inherentto frequency conversion. We focus on the practical question of optimizing the use of energy froma given available laser system and the potential advantage to use frequency conversion schemes.

Free space publication laser telecommunication through fog

G. Schimmel, T. Produit, D. Mongin, J. Kasparian, and J.-P. Wolf, Optica 5, 1338 (2018) link

Abstract: Atmospheric clearness is a key issue for free space optical communications (FSO). We present an active method to achieve FSO through clouds and fog, using ultrashort high-intensity laser filaments. The laser filaments opto-mechanically expel the droplets out of the beam and create a cleared channel for transmitting high-bit-rate telecom data at 1.55 μm. The low energy required for the process allows considering applications to Earth–satellite FSO and secure ground-based optical communication, with classical or quantum protocols.

Pr. Jean-Pierre Wolf, winner of the 2018 ZEISS Research Award

The ZEISS Research Award promotes outstanding achievements in the field of optics.  Jean-Pierre Wolf, Professor at the University of Geneva, will be honored for his groundbreaking application of ultra-short, ultra-intense laser pulses in researching the earth’s atmosphere. His research makes it possible to find out more about pollutants in the earth’s atmosphere and potentially control lightning and condensation in clouds.

The awards will be presented during the ZEISS Symposium “Optics in the Quantum World” on 18 April 2018 at the ZEISS Forum in Oberkochen