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Journals and Conferences
We describe preliminary experiences to validate correction of wavefront aberrations in middle of laser chain. This technique allows correction of aberrations from first part, and the pre-compensation of aberrations built in second part of laser.
We have tested two optical solutions to homogenize the spatial profile of nanosecond pump beams to be used for a Petawatt Ti:Sapphire. Simulations and experiments will be presented for microlens arrays and random phase plate.
Our goal is to robust configurations for terawatt/petawatt-class power amplifiers. We investigate the processes involved in Ti:Sa pumping: damage threshold of amplifying material, beam transport (relay-image or homogenization) and coherence properties of pump lasers.
We have studied and designed an optical solutions to homogenize and shape the spatial profile of intense nanosecond pump beams to be used for a Petawatt-class Ti:sapphire amplifier. Simulations and experimental results will be presented.
The pumping of large Ti:sapphire crystals, in order to reach petawatt-level laser amplification, is the careful control of the spatial energy distribution of 100 Joule-class SHG Nd:glass pump lasers. Nanosecond neodymium-based pump lasers exhibit poor spatial and temporal profile quality, which can lead to local hot spots, responsible for strong intensity… (More)
We demonstrate the use of a new wavefront analyser called MIROMA in a laser chain to measure the residual spatial modulations of the beam induced by footprints of a deformable mirror and prevent optical damages.
We have studied experimentally and theoretically the parasitic lasing phenomenon in large-aperture Ti:sapphire crystals to optimize the amplification scheme of petawatt class Ti:sapphire laser. Simulations, first experimental results and strategy of amplification will be presented.