Laurent Lombard

TL;DR: It is shown that coherent beam combining of two femtosecond fiber chirped-pulse amplifiers seeded by a common oscillator opens up a way to scale the peak/average power of ultrafast fiber sources.

TL;DR: In this article, an optical configuration for target-in-the-loop single-mode fiber amplifier coherent combining through turbulence is presented, with a lambda/15 residual phase error, and theoretical analysis demonstrate that detection subsystem aperture reduction is paramount to lower sensitivity to backward turbulence when using a detector in the laser emitter plane.

TL;DR: In this article, an axial aircraft wake vortex light detection and ranging (LIDAR) sensor, working in Mie scattering regime, based on pulsed 15-mu m high-brightness large-core fiber amplifier is used for the LIDAR design.

TL;DR: This work reports what it believes to be the first experimental demonstration of coherent beam combining of two fiber amplifiers in a 100 ns pulse regime using a signal leak between the pulses.

TL;DR: In this paper, the influence of air turbulence on femtosecond laser filamentation is studied experimentally and numerically for laser powers of a few critical powers, and it is shown that air turbulence in the path of the beam prior to filamentation induces a large pointing and formation instability attributed to an increase of the self-focusing distance and higher modulational instability in the presence of turbulence.