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                  <mods:namePart>Bañares Morcillo, Luis</mods:namePart>
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               <mods:abstract>We present an approach to generate paraxial laser beams with arbitrary spatial distribution in the femtosecond time regime. The proposed technique is based upon a pair of volume phase holographic gratings working in parallel arrangement. It exploits the spatial coherence properties of the incoming laser beam in a compact and robust setup that mitigates angular and spatial chirp. The gratings were recorded in a photopolymerizable glass with a high optical damage threshold and a large optical throughput. Setup performance is studied and experimentally demonstrated by generating Laguerre-Gaussian femtosecond pulses.</mods:abstract>
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                  <mods:title>Generation of femtosecond paraxial beams with arbitrary spatial distribution</mods:title>
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