2026-06-26T17:01:36Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/441572023-08-27T16:16:12Zcom_20.500.14352_14col_20.500.14352_15

Martínez Matos, Óscar Rodrigo Martín-Romo, José Augusto Hernández Garay, María de la Paz Izquierdo González, Jesús Weigand Talavera, Rosa María Calvo Padilla, María Luisa Cheben, Pavel Vaveliuk, Pablo Bañares Morcillo, Luis 2023-06-20T03:39:01Z 2023-06-20T03:39:01Z 2010-03-01 0146-9592 10.1364/OL.35.000652 https://hdl.handle.net/20.500.14352/44157 http://dx.doi.org/10.1364/OL.35.000652 http://www.opticsinfobase.org/ 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. eng open access Generation of femtosecond paraxial beams with arbitrary spatial distribution journal article