2026-06-07T23:48:22Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/335152023-08-26T17:17:33Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Martínez Matos, Óscar
author
Vaveliuk, Pablo
author
González Izquierdo, Jesús
author
Loriot, Vincent
2023-06-19T13:23:43Z
2023-06-19T13:23:43Z
2013-10-21
1094-4087
10.1364/OE.21.025010
https://hdl.handle.net/20.500.14352/33515
http://dx.doi.org/10.1364/OE.21.025010
http://www.opticsinfobase.org/
Spatial shaping of ultrashort laser beams at the focal plane is theoretically analyzed. The description of the pulse is performed by its expansion in terms of Laguerre-Gaussian orthonormal modes. This procedure gives both a comprehensive interpretation of the propagation dynamics and the required signal to encode onto a spatial light modulator for spatial shaping, without using iterative algorithms. As an example, pulses with top-hat and annular spatial profiles are designed and their dynamics analyzed. The interference of top-hat pulses is also investigated finding potential applications in high precision pump-probe experiments (without using delay lines) and for the creation of subwavelength ablation patterns. In addition, a novel class of ultrashort pulses possessing non-stationary orbital angular momentum is also proposed. These exotic pulses provide additional degrees of freedom that open up new perspectives in fields such as laser-matter interaction and micro-machining.
eng
Femtosecond spatial pulse shaping at the focal plane
journal article
URL
https://docta.ucm.es/bitstreams/ef725c31-d7af-4483-a4b0-c0e188f92a21/download
File
MD5
0d1300272e9e6f00a610618fcaed07fa
2286702
application/pdf
Martinez-Matos01libre.pdf
URL
https://docta.ucm.es/bitstreams/cc15dea6-20cc-4e3a-b026-01449abba43f/download
File
MD5
844a13b3737db26d41a239b011bb250d
57216
text/plain
Martinez-Matos01libre.pdf.txt