Martínez Matos, ÓscarRodrigo Martín-Romo, José AugustoHernández Garay, María de la PazIzquierdo González, JesúsWeigand Talavera, Rosa MaríaCalvo Padilla, María LuisaCheben, PavelVaveliuk, PabloBañares Morcillo, Luis2023-06-202023-06-202010-03-010146-959210.1364/OL.35.000652https://hdl.handle.net/20.500.14352/44157© 2010 Optical Society of America. We thank Fransisco del Monte for valuable advice and CAI-UCM facilities. The financial support from the Spanish Ministry of Science and Innovation under projects TEC 2008-04105, CTQ2008-02578/BQU and Consolider SAUUL CSD2007-00013 is acknowledged. M. P. H.-G. and P. V. acknowledge the Spanish Ministry of Foreign Affairs and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (Brazil) for financial support, respectively.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.engjournal articlehttp://dx.doi.org/10.1364/OL.35.000652http://www.opticsinfobase.org/open access535Dispersion CompensationPulsesVorticesÓptica (Física)2209.19 Óptica Física